九州大学 研究者情報
論文一覧
WANG WENXUE(わん うえんしゆえ) データ更新日:2019.06.21

准教授 /  応用力学研究所 新エネルギー力学部門


原著論文
1. 金 炯秀, 汪 文学,高雄 善裕, Carbon/Epoxy複合材料積層板のMode I層間破壊靭性に及ぼす温度と繊維配向角の影響, 実験力学, 208, 95-102, Vol. 18, pp. 95-102, 2018.06.
2. Xi Deng, Junfeng Hu, Wenxue Wang, Terutake Matsubara, A micromechanical model for the analysis of multidirectional fiber reinforced polymer laminates, Composite Structures, 10.1016/j.compstruct.2018.10.019, 208, 507-516, 2019.01, [URL], A new three-dimensional (3D) micromechanical model is proposed to simulate the arbitrary multidirectional carbon fiber reinforced polymer (CFRP) composite laminates. Carbon fiber is assumed as transversely isotropic and linear elastic, matrix is assumed as isotropic and elastic–plastic. Maximum strain criterion is used to describe the failure of fiber and matrix. The stresses, strains and damage are described in the fiber and matrix levels, but the debonding between the fiber and matrix and the delamination between two plies are not modeled in the present analysis. Numerical analyses of nonlinear mechanical behavior of angle-ply [±θ]
2s
under tension are conducted to verify the validity of the present micromechanical model. Numerical results of nonlinear mechanical behavior, negative Poisson's ratio through the thickness direction, and stress distribution on the free edge show good agreement with previous experimental and analytical results..
3. Mazlina Mohd Tahir, Wen-Xue Wang, Terutake Matsubara, Failure Behavior of Quasi-Isotropic Carbon Fiber Reinforced Polyamide Composites under Tension, Advanced Composite Materials, doi.org/10.1080/09243046.2017.1405605 (2017)., doi.org/10.1080/09243046.2017.1405605, 1-15, Volume 27, (2018) 484-497, 2017.10, In this paper, the microscopic failure behavior of quasi-isotropic carbon fiberreinforced
polyamide-6 (CF/PA6) laminates under tension was investigated experimentally.
Laminates of two layups, namely [45°/0°/−45°/ 90°]s and [45°/0°/−45°/
90°]2s, were made from CF/PA6 tapes of two different manufacturers and then subjected
to tensile testing. Crack initiation and progression on the polished free edge
of specimens were examined using optical microscopy, under several load levels.
Crack growth behavior through the specimen width was also traced by observing
the crack configurations in different sections in the specimen width direction. The
effects of the spatial distribution of fiber on the microscopic damage events were
elucidated. The difference in failure behavior between the present CF/PA6 laminates
and conventional thermosetting CF/Epoxy laminate is discussed..
4. Xi Deng Wen-Xue Wang, T. Matsubara, Three-dimensional simulation of pseudo-ductile behavior of angle-ply and cross angle-ply laminates, Proceedings of 21st International Conference on Composite Materials, 1-6, Paper ID 4689, 2017.08.
5. Mazlina Mohd Tahir, Wen-Xue Wang, Terutake Matsubara, A new design of end-tab for the tensile testing of unidirectional thermoplastic composites CF/PA6, Proceedings of 21st International Conference on Composite Materials, 1-6, Paper ID 3291, 2017.08.
6. Abdullah Atiq Arifin, Wenxue Wang, Terutake Matsubara, Comparative analysis of crashworthiness capability of laminate tubes structure with 0° plies of unidirectinally arrayed chopped strand, Key Engineering Materials, 10.4028/www.scientific.net/KEM.744.305, 744, 305-310, 2017.01, [URL], This paper presents the crashworthiness performance of carbon reinforced epoxy laminate tubular structure of three different kind tubes made of 0° plies Unidirectionally Arrayed Chopped Strand (UACS) introduced into laminate tube. UACS plies with discontinuous angled slit and slit perpendicular to fiber direction, namely bi-angle slits and staggered slits were used as 0° ply, respectively, instead of conventional continuous fiber ply to investigate relationship between crashworthiness capacities and progressive collapse behavior under quasi-static crushing tests. Newly designed laminate tube for crashworthy structure made of 0° plies UACS bi-angle slits and staggered slit was succesfully enhanced specific energy absorption by about 9.1% and 4.3% respectively compare to conventional continuous fiber laminate tube. The crushed laminate tubes then were sectioned through the impact point and micro-photograph were taken to show the failure behavior, which include effect of distribution slit on delamination, matrix cracking, curvature size, friction, etc. It is shown that UACS laminate beside of showing excellent formability also become newly auto trigger mechanism to achieve much stable and controllable collapse with much extensive fiber fracture occurred..
7. Mazlina Mohd Tahir, Wenxue Wang, Terutake Matsubara, A Novel Tab for Tensile Testing of Unidirectional Thermoplastic Composites, Journal of Thermoplastic Composite Materials, 10.1177/0892705717743295 (2017)., 1-15, 2017.11, This study proposes a novel tab for the tensile testing of unidirectional (UD) carbon
fiber-reinforced thermoplastic polyamide 6 (CF/PA6) to reduce stress concentration at
the tab end. The length of the new tab is identical to that of the UD CF/PA6 specimen to
avoid a sudden change in geometry that is typically observed in a conventional tab end.
Additionally, three types of UD CF/PA6 laminates from different manufacturers are used
to fabricate tensile specimens. Specimens with a new tab and a conventional nontapered
tab are tested under quasi-static tension. Finite element simulations of tensile testing are
also performed for specimens with two types of tabs. The experimental and simulation
results demonstrate that the newly designed tab reduces the stress concentration at the
tab end by approximately 10% and improves the estimates of tensile strength for the UD
thermoplastic composite laminates..
8. Jun Feng Hu, Wenxue Wang, Upgrading a shrouded wind turbine with a self-adaptive flanged diffuser, Energies, 10.3390/en8065319, 8, 6, 5319-5337, 2015.01, [URL], In this paper, a self-adaptive flange is proposed for the wind turbine shrouded by a flanged diffuser to reduce the wind loads acting on the flanged diffuser at high wind velocities. The self-adaptive flange can maintain the advantages of the flanged diffuser at wind velocities lower than the rated velocity and reduce the wind loads acting on the diffuser and blades at higher wind velocities. Numerical analyses of fluid-structure interactions are carried out to investigate the flow field around the diffuser with a self-adaptive flange and the variation of wind load acting on the diffuser due to the reconfiguration of the self-adaptive flange at various wind velocities. Numerical results show that the wind load acting on the total flanged diffuser can be reduced by about 35% at 60 m/s due to the reconfiguration of the self-adaptive flange..
9. Jia Xue, Wenxue Wang, Jia Zheng Zhang, Su Jun Wu, Progressive failure analysis of the fiber metal laminates based on chopped carbon fiber strands, Journal of Reinforced Plastics and Composites, 10.1177/0731684415571659, 34, 5, 364-376, 2015.01, [URL], In this study, we propose a new fiber metal laminate based on unidirectionally arrayed chopped strand (UACS) reinforced aluminum sheets, referred to as UACS/Al laminate. UACS is made by introducing slits into unidirectional carbon fiber-reinforced plastic (CFRP) prepreg. Due to the presence of discontinuous fibers, the microstructure of the UACS/Al laminate is much more complicated than the conventional fiber metal laminate, which also results in a failure progression that is more complicated. Tensile failure of the UACS/Al laminate might occur as combination of intra-laminar damage at the slits, inter-laminar damage at the interfaces, in-ply damage of the CFRP, and plastic deformation of the aluminum plies. Fabrication and tensile tests of UACS/Al laminate specimens were performed. A two-dimensional finite element model was developed with intra-laminar cohesive elements inserted into the slits of the UACS plies and with inter-laminar cohesive elements inserted into the interfaces between all laminas in the modelled UACS/Al laminates. A numerical study is conducted to investigate the influence of the shape of the cohesive laws on the FEA predictions. The combined experimental and numerical studies provide a detailed understanding of the failure progression of UACS/Al laminates under tensile load..
10. Jia Xue, Wenxue Wang, Jun Feng Hu, Jia Zheng Zhang, Su Jun Wu, Influence of fiber length on the tensile behavior of fiber metal laminates with discontinuous reinforcement, Journal of Reinforced Plastics and Composites, 10.1177/0731684415594890, 34, 20, 1651-1661, 2015.01, [URL], In this paper, the influence of fiber length on the tensile behavior of fiber metal laminate, which is fabricated with unidirectionally arrayed chopped strand plies and aluminum sheets and named as unidirectionally arrayed chopped strand/aluminum laminate, was investigated based on finite element analysis and experiment. The unidirectionally arrayed chopped strand ply is made by introducing slits into carbon fiber reinforced plastic prepreg where continuous fibers are arrayed unidirectionally. The fiber length is one of the most fundamental factors in tailoring the unidirectionally arrayed chopped strand/aluminum laminate to achieve the desired mechanic behaviors for specific applications. With longer fiber length, the mechanical behaviors of the bulk laminate should be more favorable, while the formability would be better with short fiber. Two-dimensional finite element models, with intra-laminar cohesive zone elements inserted into the slits of unidirectionally arrayed chopped strand plies and inter-laminar cohesive zone elements inserted into the all interfaces of unidirectionally arrayed chopped strand/aluminum laminate, respectively, were developed for the analysis of unidirectionally arrayed chopped strand/aluminum laminates with different fiber lengths under tension. Typical numerical results were validated by experimental results, which confirm that the tensile behaviors of the unidirectionally arrayed chopped strand/aluminum laminates with various different fiber lengths can be well predicted by present numerical modeling method..
11. Wenxue Wang, T. Matsubara, Y. Takao, K. Yasuda, R. Hayashi, Effects of curing conditions on the short time co-cure of CFRP-steel hybrid laminates, Journal of Reinforced Plastics and Composites, 10.1177/0731684415582281, 34, 10, 819-829, 2015.01, [URL], In this paper, short time co-cure of CFRP-steel hybrid laminates using hot pressing and the effects of curing conditions on the interlaminar shear strength (ILSS) of the hybrid laminates are investigated experimentally to explore a cost-effective co-cure process of CFRP-steel hybrid laminates for automotive applications. A new kind of CFRP prepreg which can be cured in several minutes is used. Various curing conditions including those with and without surface treatment of metal layer, those with and without an adhesive film, three kinds of adhesive films, and three curing pressures are investigated. Short beam three-point bending tests for the hybrid laminates are conducted to evaluate the ILSS of the hybrid laminates. A cost-effective co-cure process is proposed based on the experimental results..
12. Wenxue Wang, Terutake Matsubara, Junfeng Hu, Satoru Odahara, Tomoyuki Nagai, Takashi Karasutani, Yuji Ohya, Experimental investigation into the influence of the flanged diffuser on the dynamic behavior of CFRP blade of a shrouded wind turbine, Renewable Energy, 10.1016/j.renene.2015.01.028, 78, 386-397, 2015.06, [URL], Wind tunnel experiments were conducted to investigate the influence of the flanged diffuser on the dynamic behavior of the blade of a 3kW wind turbine shrouded with a flanged diffuser. The blade was fabricated by the skin of carbon fiber reinforced plastic and solid foam core. Tests were carried out for three wind velocities (6.9m/s to 11.6m/s) and three different yawing angles (0-degree to 30-degree) to investigate the effects of the interactions of the flanged diffuser and the yawing angle on the blade. The rotational speed of the blade and the dynamic strain near the blade root were measured under the conditions with and without the flanged diffuser. Two telemeter systems of transmitter and receiver were used in the measurement of the dynamic strains of the rotating blade. The mechanical tests of the blade and the skin of the blade were also performed to obtain basic data for the estimation of the strength of the blade. Experimental results reveal that the rotational speed and the dynamic strain of the blade of the wind turbine with a flanged diffuser are much higher than those without a flanged diffuser..
13. Jia Xue, Wenxue Wang, Jia Zhen Zhang, Su Jun Wu, Hang Li, Experimental and Numerical Study on the Tensile Behaviour of UACS/Al Fibre Metal Laminate, Applied Composite Materials, 10.1007/s10443-014-9419-y, 22, 5, 489-505, 2015.10, [URL], A new fibre metal laminate fabricated with aluminium sheets and unidirectionally arrayed chopped strand (UACS) plies is proposed. The UACS ply is made by cutting parallel slits into a unidirectional carbon fibre prepreg. The UACS/Al laminate may be viewed as aluminium laminate reinforced by highly aligned, discontinuous carbon fibres. The tensile behaviour of UACS/Al laminate, including thermal residual stress and failure progression, is investigated through experiments and numerical simulation. Finite element analysis was used to simulate the onset and propagation of intra-laminar fractures occurring within slits of the UACS plies and delamination along the interfaces. The finite element models feature intra-laminar cohesive elements inserted into the slits and inter-laminar cohesive elements inserted at the interfaces. Good agreement are obtained between experimental results and finite element analysis, and certain limitations of the finite element models are observed and discussed. The combined experimental and numerical studies provide a detailed understanding of the tensile behaviour of UACS/Al laminates..
14. J. F. Hu, Wenxue Wang, An approximate method for the evaluation of the normal force acting on a flexible plate normal to the wind flow, Journal of Applied Fluid Mechanics, 9, 4, 1559-1568, 2016.01, The purpose of this paper is to develop an approximate method for the evaluation of the normal force acting on a flexible plate normal to the wind flow and the deformation of the plate. A theoretical modelling is firstly proposed to predict the relationship between the normal drag coefficient of a rigid curved-plate and the configuration of the plate with the aid of a series of numerical analyses of structure and fluid dynamics. Then, based on the theoretical modelling, an approximate method for the evaluation of the normal force acting on the plate and the deformation of the plate is constructed using only the iteration of structure mechanics analysis, instead of conventional complex iterations of fluid-structure coupling analysis. Simulation tests for 3D flexible plates with different lengths and different material moduli are conducted. Also a comparative simulation test of a 3D flexible plate used in a previous experiment is performed to further confirm the validity and accuracy of the approximate method. Numerical results obtained from the approximate method agree well with those obtained from the fluid dynamics analysis as well as the results of the previous wind tunnel experiment..
15. Abdullah Atiq Arifin, Wenxue Wang, T. Matsubara, Experimental investigation on the compression and crush responses of cross-ply laminates with 0° plies of unidirectionally arrayed chopped strand, Composites Part B: Engineering, 10.1016/j.compositesb.2016.05.032, 98, 182-193, 2016.08, [URL], In this paper, the static compression and progressive crush properties of carbon fiber reinforced epoxy cross-ply laminates with different stacking sequence [(0/90)4]s and [(90/0)4]s and with different kind of 0° plies were investigated experimentally. Unidirectionally Arrayed Chopped Strand (UACS) plies with highly aligned slits of bi-angle pattern and staggered pattern were used as 0° ply, respectively, instead of conventional continuous fiber ply to study the effects of UACS ply on the compression and progressive crush responses of cross-ply laminates. Effects of stacking sequence [(0/90)4]s and [(90/0)4]s and UACS 0° plies on the compressive strength and the progressive crush properties, such as the maximum peak load, energy absorption, crush mean load, and crush force efficiency are clarified. Experimental results showed that the [(90/0)4]s laminate with UACS 0° plies of bi-angle slit pattern improves about 49% of energy absorption and the [(90/0)4]s laminate with UACS 0° plies of staggered slit pattern improves about 30% energy absorption compared to conventional cross-ply laminate..
16. Abdullah Atiq Arifin, Wenxue Wang, Terutake Matsubara, Comparative analysis of crashworthiness capability of laminate tubes structure with 0° plies of unidirectinally arrayed chopped strand, International Symposium on Material Science and Engineering, ISMSE 2017
Symposium on Materials Science and Engineering - ISMSE 2017
, 10.4028/www.scientific.net/KEM.744.305, 744, 305-310, 2017.01, [URL], This paper presents the crashworthiness performance of carbon reinforced epoxy laminate tubular structure of three different kind tubes made of 0° plies Unidirectionally Arrayed Chopped Strand (UACS) introduced into laminate tube. UACS plies with discontinuous angled slit and slit perpendicular to fiber direction, namely bi-angle slits and staggered slits were used as 0° ply, respectively, instead of conventional continuous fiber ply to investigate relationship between crashworthiness capacities and progressive collapse behavior under quasi-static crushing tests. Newly designed laminate tube for crashworthy structure made of 0° plies UACS bi-angle slits and staggered slit was succesfully enhanced specific energy absorption by about 9.1% and 4.3% respectively compare to conventional continuous fiber laminate tube. The crushed laminate tubes then were sectioned through the impact point and micro-photograph were taken to show the failure behavior, which include effect of distribution slit on delamination, matrix cracking, curvature size, friction, etc. It is shown that UACS laminate beside of showing excellent formability also become newly auto trigger mechanism to achieve much stable and controllable collapse with much extensive fiber fracture occurred..
17. Mazlina Mohd Tahir, Wenxue Wang, Terutake Matsubara, Failure behavior of quasi-isotropic carbon fiber-reinforced polyamide composites under tension, Advanced Composite Materials, 10.1080/09243046.2017.1405605, 1-15, 2017.11, [URL], In this paper, the microscopic failure behavior of quasi-isotropic carbon fiber-reinforced polyamide-6 (CF/PA6) laminates under tension was investigated experimentally. Laminates of two layups, namely [45°/0°/−45°/ 90°]s and [45°/0°/−45°/ 90°]2s, were made from CF/PA6 tapes of two different manufacturers and then subjected to tensile testing. Crack initiation and progression on the polished free edge of specimens were examined using optical microscopy, under several load levels. Crack growth behavior through the specimen width was also traced by observing the crack configurations in different sections in the specimen width direction. The effects of the spatial distribution of fiber on the microscopic damage events were elucidated. The difference in failure behavior between the present CF/PA6 laminates and conventional thermosetting CF/Epoxy laminate is discussed..
18. Hang Li, Wen-Xue Wang, Terutake Matsubara, Jia Xue, Dongmei Luo, Effects of specimen width on the tensile strength of aligned short-carbon-fiber reinforced epoxy composite laminates, Proceedings of 20th International Conference on Composite Materials (ICCM20), 1-9, 2015.07.
19. Junfeng Hu, Wen-Xue Wang, Upgrading a Shrouded Wind Turbine with a Self-Adaptive Flanged Diffuser, Energies, 2015, 8(6), 5319-5337; doi:10.3390/en8065319, 2015.06.
20. Jia Xue, Wen-Xue Wang, Junfeng Hu, Jia-Zhen Zhang, Su-Jun Wu, Influence of fiber length on the tensile behavior of fiber metal laminates with discontinuous reinforcement, Journal of Reinforced Plastics and Composites, vol. 34(20), (2015) pp. 1651-1661. , 2015.10.
21. Wen-Xue Wang, T. Matsubara, Y Takao, K. Yasuda, R. Hayashi, Effects of curing conditions on the short time co-cure of CFRP-steel hybrid laminates, Journal of Reinforced Plastics and Composites, 34 (10) (2015.5) pp. 819-829., 2015.05.
22. Jia Xue, Wen-Xue Wang, Jia-Zhen Zhang, Su-Jun Wu, Progressive failure analysis of the fiber metal laminates based on chopped carbon fiber strands, Journal of Reinforced Plastics and Composites, 34 (5) (2015.3) pp. 364-376., 2015.03, In this study, we propose a new fiber metal laminate based on unidirectionally arrayed chopped strand (UACS) reinforced aluminum sheets, referred to as UACS/Al laminate. UACS is made by introducing slits into unidirectional carbon fiber reinforced olastic (CFRP) prepreg. Due to the presence of discontinuous fibers, the microstructure of the UACS/Al laminate is much more complicated than conventional fiber metal laminate, which also results in a failure progression that is more complicated. Tensile failure of the UACS/Al laminate might occur as combination of intra-laminar damage at the slits, inter-laminar damage at the interfaces, in-ply damage of the CFRP and plastic deformation of the aluminum plies. Fabrication and tensile tests of UACS/Al laminate specimens were performed. A two-dimensional finite element model was developed with intra-laminar cohesive elements inserted into the slits of the UACS plies and with inter-laminar cohesive elements inserted into the interfaces between all laminas in the modelled UACS/Al laminates. A numerical study is conducted to investigate the influence of the shape of the cohesive laws on the FEA predictions. The combined experimental and numerical studies provide a detailed understanding of the failure progression of UACS/Al laminates under tensile load..
23. WANG WENXUE, 松原 監壮, 小田原 悟, 大屋 裕二, 烏谷 隆, シュラウド型風車のCFRPブレードの動的力学挙動に及ぼす鍔付きディフューザーの影響, 日本風力エネルギー学会, 38巻4号(通巻第112号),pp. 98-104,(2015.02), 2015.02, Wind tunnel experiment was conducted to investigate the influence of the flanged diffuser on the dynamic behavior of the blade of a 3kW wind turbine shrouded with a flanged diffuser. Three wind velocities (6.9 m/s to 11.6 m/s) and three different yawing angles (0-degree to 30-degree) were tested to investigate the effects of the flanged diffuser and the yawing angle on the dynamic behavior of blade. Three blades were fabricated by the skin of carbon fiber reinforced plastic (CFRP) and Piocelan core. The blade rotation speed and the dynamic strain at the blade were measured under the conditions with and without the flanged diffuser. Two telemeter systems of transmitter and receiver were used in the measurement of the dynamic strains at the rotating blade. Experimental results reveal that the rotation speed and the dynamic strain at the blade of the wind turbine with the flanged diffuser are much higher than those without the flanged diffuser. On the other hand, the rotation speed and the dynamic strain at the blade decrease as the yawing angle increases. Furthermore, the influence of the flanged diffuser on the variation of the tensile strain within one rotation is relatively slight. The CFRP blade is available for small wind turbine with relatively high rotation speed to reduce the centrifugal force..
24. Jia Xue, Wen-Xue Wang, Jia-Zhen Zhang, Su-Jun Wu, Hang Li, Experimental and numerical study on the tensile behaviour of UACS/Al fibre metal laminate, Appl Compos Mater, DOI 10.1007/s10443-014-9419-y, 2014.12, A new fibre metal laminate fabricated with aluminium sheets and unidirectionally
arrayed chopped strand (UACS) plies is proposed. The UACS ply is made by cutting parallel
slits into a unidirectional carbon fibre prepreg. The UACS/Al laminate may be viewed as
aluminium laminate reinforced by highly aligned, discontinuous carbon fibres. The tensile
behaviour of UACS/Al laminate, including thermal residual stress and failure progression, is
investigated through experiments and numerical simulation. Finite element analysis was used
to simulate the onset and propagation of intra-laminar fractures occurring within slits of the
UACS plies and delamination along the interfaces. The finite element models feature intralaminar
cohesive elements inserted into the slits and inter-laminar cohesive elements inserted
at the interfaces. Good agreement are obtained between experimental results and finite element
analysis, and certain limitations of the finite element models are observed and discussed. The
combined experimental and numerical studies provide a detailed understanding of the tensile
behaviour of UACS/Al laminates..
25. Wen-Xue Wang, T. Matsubara, Y. Takao, K. Yasuda, R. Hayashi, Effects of adhesive conditions on the interlaminar shear strength of CFRP/stell hybrid laminate, Proceedings of The 11th China-Japan Joint Conference on Composite Materials, 1-6, 2014.10, In this paper, effects of adhesive conditions and cure pressure on the interlaminar shear strength of CFRP/steel hybrid laminate are investigated experimentally. The adhesive conditions include the surface treatment of metal layer, with or without an adhesive film, and types of adhesive films. Three cure pressures and three kinds of adhesive films are used in the fabrication of CFRP/steel hybrid laminates. Experimental results reveal significant effects of adhesive conditions and pressure on the interlaminar shear strength..
26. Hang Li, Wen-Xue Wang, Terutake Matsubara, Dongmei Luo, Jia Xue, Damage Progression Analysis of Newly Designed Unidirectionally Arrayed Chopped Strands Laminates, Proceedings of The 9th Asian-Australasian Conference on Composite Materials (ACCM-9), 1-6, 2014.10, In this study, the damage progression analysis of unidirectionally arrayed chopped strands (UACS) laminates with current continuous slit distribution and two types of newly designed discontinuous slit distributions under tension are simulated based on a multiscale analysis. The multiscale analysis includes a homogenization analysis and a damage progression analysis. The elastic constants of the UACS laminas used in the macroscopic region are obtained from the homogenization analysis. Cohesive interface element and maximum stress criterion are employed for the simulation of the progression of delamination and other failure modes in the laminates, respectively. The results of damage progression analysis reveal that the intersection areas of slits in 0° ply and adjacent plies appear initial delamination in all cases of UACS laminates. The ends of discontinuous slits inhibit the delamination development efficiently which result that comparing with continuous slit pattern, newly designed patterns UACS laminates perform large level of strength.
27. Wen-Xue Wang, Jun-Feng Hu, Terutake Matsubara, An approximate method for the fluid-structure coupling analysis of a flexible plate normal to the fluid flow, World Renewable Energy Congress 13 (WREC-XIII), 1-7, 2014.08, This paper aims to develop an approximate analysis method for the evaluation of the averaged pressure acting on a flexible plate normal to the wind flow. The average pressure is defined by the total normal force acting on the deformed plate divided by the area of the plate. The total normal force depends on the wind velocity and deformation of the plate. A theoretical formulation is proposed to describe the relationship between the normal drag coefficient of a curved rigid-plate and the configuration of the plate. Based on this relationship, an approximate method using only the iteration of structure mechanics analysis is constructed to evaluate the deformation of a flexible plate and the averaged wind pressure acting on the plate, instead of conventional complex iterations of fluid-structure coupling analysis. Computational simulations for 2-dimensional and 3-dimensional models of flexible plates are performed for various wind velocities. Numerical results of the averaged wind pressure obtained from the approximate method agree well with those obtained from the fluid dynamics analysis of rigid-plates with the same configurations which are determined from the iterative analysis of structure mechanics. .
28. Wen-Xue Wang, Terutake Matsubara, Satoru Odawara, Yuji Ohya, Takashi Karasudani, Effects of the flanged diffuser on the dynamic behavior of CFRP blade of a shrouded wind turbine, Great Renewable Energy 2014 International Conference, 1-4, 2014.08, Wind tunnel experiments are conducted to investigate the influence of the flanged diffuser on the dynamic behavior of the blade, fabricated by the skin of carbon fiber reinforced plastic and core, of a 3kW wind turbine shrouded with a flanged diffuser. Three wind velocities (6.9 m/s to 11.6 m/s) and three different yawing angles (0-degree to 30-degree) are tested to investigate the effects of the interactions of the flanged diffuser and the yawing angle on the blade. The rotation speed and the dynamic strain of the blade are measured under the conditions with and without the flanged diffuser. Two telemeter systems of transmitter and receiver are used in the measurement of the dynamic strains of the rotating blade. The mechanical tests of the blade and the skin of the blade are also performed to obtain basic data for the estimation of the strength of the blade. Experimental results reveal that the rotation speed and the dynamic strain of the blade of the wind turbine with flanged diffuser are much higher than those without flanged diffuser, as predicted by the previous aerodynamic research. On the other hand, the rotation speed and the dynamic strain of the blade decrease with the yawing angle increases. Furthermore, the influence of the flanged diffuser on the variation of the tensile strain within one rotation is relatively slight. The carbon fiber reinforced plastic is available for small wind turbine with relatively high rotation speed to reduce the centrifugal load applied to the blade..
29. 李 航, WENXUE WANG, 松原 監壮, Multiscale analysis of damage progression in newly designed UACS laminates, Composites: Part A , http://dx.doi.org/10.1016/j.compositesa.2013.11.003, 57, 108-117, 57 (2014) 108–117., 2014.02, In this paper, the damage progression in laminates fabricated by unidirectionally arrayed chopped strands (UACS) with newly designed slit distribution patterns under tension is simulated based on a multiscale analysis. The multiscale analysis includes a homogenization analysis and a hybrid modeling of partial microscopic region combined with a partial macroscopic region. The homogenization analysis is employed to calculate the elastic constants of the laminas used in the macroscopic modeling. The silt distribution patterns are exactly modeled in the microscopic region. Cohesive interface element and maximum stress criterion are employed for the simulation of the progression of delamination and other failures in the laminates, respectively. .
30. 松原 監壮, WENXUE WANG, 高雄 善裕, 安田 賢三, 林 良輔, Effects of the cure pressure on the interlaminar shear strength of CFRP-steel hybrid laminate cured by hot pressing for a short time, Proceedings of THE 19TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS (ICCM-19), Proceedings of THE 19TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS (ICCM-19), Paper ID WAN80433, pp.1-8, Montreal, Canada, (2013.7.28-8.2), 2013.07, In this paper, CFRP-steel hybrid laminate is focused on for the fabrication of lightweight automotive elements. The effects of the cure pressure on the interlaminar shear strength of CFRPsteel hybrid laminate cured by hot pressing for a short time are investigated by short beam test of three-point bend. Three cure pressures of 5MPa, 8MPa, 13MPa are investigated. Furthermore, repeated thermal shock tests (-40OC to 150OC) of
500 cycles are conducted for the hybrid laminates cured at different cure pressures. The interlaminar shear strength of the hybrid laminates after thermal shock test is investigated. Experimental results shows that cure pressure has significant effects on the interlaminar shear strength of hybrid laminates and the thermal shock also significantly affect the interlaminar shear strength of the hybrid laminates.
.
31. Dongmei Luo, Hong Yang, Yiying Xiao, WENXUE WANG, A closed-Form Solution of Effective Young’s Modulus for Composites including Multi-Shape Inclusions Using Improved Mori-Tanaka Method, Advanced Materials Research , Advanced Materials Research Vol. 704 (2013) pp 343-348., 2013.06, In this paper, an improved model is proposed by combining Mori-Tanaka method with
Eshelby’s equivalent inclusion concept to derive a closed-form solution of the effective Young's
modulus E11 for hybrid composites reinforced with multi-shapes inclusions. When only the fiberlike
inclusions are considered in the model, the results are consistent with those from Tandon’s
unidirectional aligned composites based on Mori-Tanaka theory. For composites reinforced with
fiber-like and spherical inclusions, the homogenization theory is employed to verify the effects of
the proposed model. The influence of volume fraction and Young’s modulus of each phase on
effective Young’s modulus E11 is investigated, and the results show that E11 is sensitive to the
inclusion shapes, and the model is practicable to predict the effective mechanical properties of
composites reinforced by several inclusions with different shapes..
32. Hang Li, 松原 監壮, WENXUE WANG, Damage Progression in Unidirectionally Arrayed Chopped Strands Laminates with Different Slit Patterns under Tension, Advanced Materials Research , Advanced Materials Research Vol. 704 (2013) pp 307-312., 2013.06, This study investigates the damage progression in unidirectionally arrayed chopped strands
(UACS) laminates with different slit patterns under tension. Three slit patterns, namely, continuous
angled slits, discontinuous staggered angled slits, and discontinuous bi-angled slits, are analyzed
based on the cohesive zone model. It is found that the delamination between 0-degree ply and its
adjacent plies occurs initiatively at the points of intersection between slits in 0-degree ply and in its
adjacent plies. Good agreement is seen from the comparison of numerical results with the previous
experiment results. Both results reveal that the discontinuous slit can efficiently inhibit the
development of delamination..
33. 中村俊一郎, 松原 監壮, 高雄 善裕, WANG WENXUE, 飛行機複合材料構造の修理法-供試体設計と破断荷重
, 日本宇宙航空学会論文集, 61, 3, 64-70, 2013.10, Recent research has studied damaged fuselage panels made with CFRP laminate. The damage is removed
with a squared hole and repaired with a patch. Two repair methods have been proposed. One is bonding a small CFRP
patch as a time-limited repair to withstand the limit load, and the other is bonding a large CFRP patch as a permanent
repair to withstand the ultimate load. Test panels repaired with these methods are loaded with tension until fracture.
The test results show that a time-limited repair with the bonding small CFRP patch is possible, and that the two types of
repair panels have different initial points of fracture. This paper also proposes the repair method of fastening a titanium
patch as a time-limited repair. Design techniques of test panels for these three repair methods are presented, and simple
methods to predict the fracture load of fastening and bonding repair are proposed. The fastening titanium patch is also
shown to be possible as a time-limited repair. The test results of each repair method show that the design techniques
are useful, and that simple fracture load prediction methods are highly consistent with the test results under limited test
data..
34. H.M. Ning, N. Hu, T. Kamata, J.H. Qiu, X. Han, L.M. Zhou, Christiana Chang, Y. Liu, L.K. Wu, H.L. Ji, WENXUE WANG, Y. Zemba, A. Atobe, Alamusi, H. Fukunaga, Improved piezoelectric properties of poly(vinylidene fluoride) nanocomposites containing multi-walled carbon nanotubes, Smart Mater. Struct. 22 (2013) 065011 (9pp), Smart Mater. Struct. 22 (2013) 065011 (9pp), 2013.04, We improved the piezoelectric properties of poly(vinylidene fluoride) (PVDF) by employing multi-walled carbon nanotubes (MWCNTs) as nanofillers..
35. 中村俊一郎, 松原 監壮, 高雄 善裕, WANG WENXUE, 接着修理したCFRP構造の破損モード, 日本複合材料学会誌, Vol.39 No. 2 (2013), pp.65-71., 2013.03, Composite materials, especially carbon fiber reinforced plastics (CFRP), have been widely used in the airplane structures like wing or fuselage panel. An airplane damaged in service by accident or serious incident is repaired by removing the damaged area and by bonding or fastening a patch. The total cost of repair is expected to decrease by the combination of the time-limited repair and permanent repair. Thus, it is important to understand the strength characteristics of a small patch for the time-limited repair and a large patch for the permanent repair. This paper picks up the fuselage panel made with thin CFRP laminates and prepares the specimen repaired by bonding a CFRP patch to the panel with a rectangular hole. Failed specimens under tension are investigated precisely by both a magnifying glass and optical microscope, which leads to the result that different sizes of patch have different initial failure points. That is, time-limited and permanent patches have the cohesive failure at central and side patch ends, respectively..
36. H. Li, W.X. Wang, Y. Takao and T. Matsubara, New designs of unidirectionally arrayed chopped strands by introducing discontinuous angled slits into prepreg, Composites Part A: Applied Science and Manufacturing, Composites Part A: Applied Science and Manufacturing, Volume 45, (2013), pp.127-133., 2013.02, New designs of unidirectionally arrayed chopped strands (UACSs) are proposed to improve existing UACS
laminates with continuous angled slits by introducing discontinuous angled slits into a unidirectional
prepreg. Two slit patterns of staggered angled slits and bi-angled slits are designed. A paper cutter is
employed to introduce slits into the prepreg. Quasi-isotropic UACS laminates with new slit patterns
and existing continuous angled slits together with the conventional laminate without slits are fabricated
for tensile tests. Hybrid laminates [90/0/90] with two unidirectional glass-fiber/epoxy plies and one UACS
ply are fabricated for flowability tests. Experimental results reveal that newly designed UACS laminates
possess higher strength and better flowability than existing UACS laminate..
37. J. Hu, W. Wang, Y. Nakahara, S. Zhu, Crack Healing Behavior of SiC Whiskers Reinforced Si3N4 Composites, Materials Science Forum, Materials Science Forum Vol. 750 (2013) pp 15-18., 2013.01, SiC whisker reinforced Si3N4 composite was used for studying crack healing behavior. Surface crack and straight-through crack were introduced on the tensile surface of specimens by Vickers hardness indenter and single edge pre-crack beam method. The cracked specimens were heat-treated at 1000 , 1100 , 1200 and 1300 for 1 hour in air. Bending strength was measured at room temperature by three point bending tests system. It was investigated that the best heat treatment temperature of Si3N4/SiC whisker composite is 1200 -1300 . The relationship between bending strength and logarithm of crack area was near linear and parabola in original and heat-treated specimens, respectively. Crack healing behavior was analyzed by oxidation filling model according to oxidation kinetics..
38. H. Li, W.X. Wang, Y. Takao and T. Matsubara, Effects of Slit Patterns on the Tensile Properties of Unidirectionally Arrayed Chopped Strands Composites, Materials Science Forum, Materials Science Forum Vol. 750 (2013) pp 208-211., 2013.01, This study investigates the tensile properties of UACS (unidirectional arrayed chopped strands) laminates with different slit patterns. UACS composite is a kind of short fiber reinforced polymer by introducing slits into prepregs before the fabrication of laminates. Existing UACS composites have superior flowability but relatively low tensile strength compared to conventional CFRP (carbon fiber reinforced polymer). Consequently, many efforts have been made to improve the strength of UACS composites. In this study, two new discontinuous slit patterns, staggered pattern and bi-angled pattern, have been developed. Tensile tests reveal that two new UACS laminates with staggered and bi-angled slit patterns have higher strength and higher stiffness than existing UACS laminates with continuous slits. Discontinuity of slits plays an important role in inhibiting the development of delamination. Different slit patterns show different failure modes. . .
39. J. Xue, W.X. Wang, Y. Takao and T. Matsubara, Thermal Residual Stress and Tensile Strength of UACS/Al Laminate with Different Slit Angles, Materials Science Forum, Materials Science Forum Vol. 750 (2013) pp 204-207., 2013.01, This paper focuses on the investigation of tensile strength and thermal residual stress in UACS/Al laminates. The UACS (unidirectionally arrayed chopped strands) is made by cutting parallel slits on unidirectional carbon fiber prepreg. Thus all of the carbon fibers in the cut prepreg are 25 mm in length. Six cases of UACS prepregs are prepared with different slit angle θ, which is the angle between slit and fiber direction, including 5.7o, 11.3o, 16.7o, 31o, 45o and 90o. A UACS/Al laminate consists of one UACS layer with four UACS plies and two aluminum layers, such as [Al/UACS4/Al]. Four pieces of UACS prepreg with alternate slit angle [θ/-θ/θ/-θ] are stacked together in the same fiber direction. Then stacked UACS/Al laminate are cured using an autoclave. Tensile tests are performed to investigate the thermal residuals stress using the yielding-point-shift method. Experiment results show that thermal residual stress is reduced in the case of UACS/Al compared with conventional CFRP/Al. Among all the cases, specimen with slit angle of 11.3o is the most impressive one with 37.7% reduction of thermal residual stress. .
40. LUO Dongmei,WANG Wenxue, CHEN Qiu-yan, YANG Hong,ZHOU Ying-long, LI Bangding, Effective mechanical properties for composites with three-phase randomly distributed aggregates predicted by Multi-step Mori-Tanaka method, Applied Mechanics and Materials, Applied Mechanics and Materials Vol. 232 (2012) pp 73-77., 2012.10, Multi-step Mori-Tanaka method (MMT) is applied to the estimation of the effective
mechanical properties for composites with three-phase randomly distributed aggregates in this
paper. The Multi-phase Homogenization Theory (MHT) which is based on mathematical
homogenization method and is employed to verify the results of MMT method. Results show that
MMT method is reasonable and practicable to predict the effective mechanical properties of
composites with several phases, and the Young’s moduli and Poisson’s ratios of each phase may
have some effects on the effective mechanical properties of multi-phase composites..
41. Wen-Xue Wang, Hang Li, Yoshihiro Takao, Terutake Matsubara, New unidirectionally arrayed chopped strands composites by introducing discontinuous angled slits into prepreg, Proceedings of 15th European Conference on Composite Materials, Proceedings of 15th European Conference on Composite Materials, Venice, Italy, 24-28 June, Paper ID 1467 pp. 1-8 (2012)., 2012.06.
42. Z.X. Chen, W.X. Wang, Y. Takao, T. Matsubara and L.M. Ren, Changes in surface characteristics of anodized titanium arising from water immersion, 粉体および粉末冶金, 粉体および粉末冶金,,Vol.59, No.7 pp. 415-420 (2012.7), 2012.07, Titanium surface is usually modified using a spark anodizing technique for biomedical application, and the resultant anodic TiO2 layer on the surface plays a crucial role in promoting the favorable biologic response. However, despite the fundamental importance of anodic TiO2 layer, little is known about its long-term stability or changes in vivo. In this study, as a first step to elucidate the surface changes of anodized titanium in vivo, changes in surface characteristics of anodic TiO2 layer arising from water immersion at 37 oC were investigated. It was found that after water immersion for 1 week, numerous nanoparticles emerged on the surface of anodized titanium fabricated at a voltage of 200 V, and with the further increasing of immersion time, more nanopartiles formed and interconnected with each other, resulting in a nanostructured surface layer. Transmission electron microscopy investigation of anodic TiO2 layer before and after water immersion indicated that water immersion transformed the originally amorphous TiO2 layer into crystalline anatase gradually, and the lap-shear test of oxide layers demonstrated the decreased shear strength with water immersion. In addition, it was found that the increased anodization voltage led to the anodic TiO2 layer with better stability..
43. Noriyoshi Hirano, W.X. Wang, Y. Takao, The Effect of temperature on Bearing Strength of CFRP Bolted Joint with Washer Constraining , Reports of Research Institute for Appplied Mechanics, Kyushu University, 142, 21-27, Reports of Research Institute for Appplied Mechanics, Kyushu University No.142, 21-27 (2012), 2012.03, Bolted joint bearing tests are conducted at room temperatureand at high and low temperatures for CF/epoxy quasi-isotropic
laminates cured at 180C with two stacking sequences, namely, [0/45/45/90]3S and
[90/45/45/0]3S. Then, the evolution of microscopic damage as a function of load
is examined by using an optical microscope. This article presents an original set of
experimental data on the bearing strength of CF/epoxy pinned joints at high and low
temperatures, as well as room temperature, while the previous studies did not cover
the wide range of temperatures. Moreover, a technique for dynamically monitoring
the load is developed to obtain the damage at the maximum load. The critical
damage has not been distinguished from the secondary ones in the previous
literature. .
44. Z.X. Chen, W.X. Wang, Y. Takao, T. Matsubara, L.M. Ren, Surface characteristics and indentation deformation of porous anodic TiO2 layer before and after hot water treatment, Rare Metal Materials and Engineering, Rare Metal Materials and Engineering, 41(S1), pp. 38-42 (2012)., 2012.02.
45. W.X. Wang, C. Li, Y. Sakata, R. Momoda, and C.N. Xu, Visualization of stress concentration around inclined crack-like notch using mechanoluminescence film sensor, Proceedings of International Forum on Mechanoluminescence and Novel Structural Health Diagnosis 2011, 2011.11, This paper describes the experimental visualization of stress concentration around inclined cracks using mechanoluminescence (ML) film sensor. The distribution of equivalent stress calculated by finite element analysis is compared with the distribution of intensity of visual light emitted by ML sensor when the specimen is subjected to tensile load. Both of them are in good consistence. Experimental results prove that the ML film sensor is available and convenient for the evaluation of complicated stress concentration..
46. T. Matsubara, Y. Takao, W.X. Wang, Microscopic damage evaluation of bolt joint in carbon fiber reinforced metal laminate, Proceedings of ICCM-18, paper IF0958, (2011) 1-2., 2011.08.
47. H. Li, W.X. Wang, Y. Takao, T. Matsubara, Mechanical properties of unidirectional arrayed chopped strands (UACS) with different slit patterns, Proceedings of ICCM-18, paper IF0397, (2011) 1-6., 2011.08.
48. J. Xue, W.X. Wang, Y. Takao, T. Matsubara, Effects of slit angle of unidirectionally arrayed chopped strands (UACS) on the thermal residual stress in UACS/Al laminate, Proceedings of ICCM-18, paper IF0402, (2011) 1-4., 2011.08.
49. Z.X. Chen, W.X. Wang, Y. Takao, T. Matsubara, L.M. Ren, Microstructure and shear fracture characteristics of porous anodic TiO2 layer before and after hot water treatment, Applied Surface Science, 257 (2011) 7254–7262., Applied Surface Science, 257 (2011) 7254–7262., 2011.04.
50. Jia Xue, Wen-Xue Wang, Yoshihiro Takao, and Terutake Matsubara, Reduction of thermal residual stress in carbon fiber aluminum laminates using a thermal expansion clamp, Composites Part A, 42 (2011) 986–992., doi.org/10.1016/j.compositesa.2011.04.001, 2011.04.
51. W.X. Wang, T. Matsubara, Y. Takao, Y. Imai, C.N. Xu, A new smart damage sensor using mechanoluminescence material, Materials Science Forum, Materials Science Forum, Vols. 675-677 (2011) pp 1081-1084., 2011.01.
52. Wenliang Zhu, Dongmei Luo, Yinglong Zhou, Wenxue Wang, An Analytical Model of Stress- Transfer in the Nano-Composites with Debonding Interface, Advanced Materials Research, Advanced Materials Research, Vols. 163-167 (2011) pp 4599-4603., 2011.01.
53. Z.X. Chen, W.X. Wang, Y. Takao and T. Matsubara, Surface nanostructure, biological performance, and mechanical properties of anodized titanium based water treatment, Proceedings, of The 2nd International Conference on Nanomechanics and Nanocomposites, Proceedings, of The 2nd International Conference on Nanomechanics and Nanocomposites, pp.143-146, 2010., 2010.10.
54. Y. Harita, W.X. Wang, Y. Takao, T. Matsubara, Development of CFRP/AL Hybrid laminates, Proceedings of The 9th China-Japan Joint Conference on Composite Materials, Proceedings of The 9th China-Japan Joint Conference on Composite Materials, Hohhot, China, Sept. 6-9, pp.11-13, (2010)., 2010.09.
55. L.M. Ren, W.X. Wang, Y. Takao, and Z.X. Chen, Effects of Cementum-dentine Junction and Cementum on the Mechanical Response of Tooth Supporting Structure, Journal of Dentistry, Journal of Dentistry, Volume 38, Issue 11, November 2010, Pages 882-891 (2010), 2010.11.
56. L.M. Ren, W.X. Wang, Y. Takao, and Z.X. Chen, Evaluation of the biomechanical characteristic of tooth supporting structure under occlusal load, 粉体および粉末冶金、57巻5号、298-305(2010), 粉体および粉末冶金、57巻5号、298-305(2010)., 2010.05.
57. Z.X. Chen, W.X. Wang, Y. Takao, T. Matsubara and L.M. Ren, Surface treatments of titanium anodized in phosphoric acid solution and in vitro cell responses, 粉体および粉末冶金、57巻5号、306-313(2010), 粉体および粉末冶金、57巻5号、306-313(2010)., 2010.05.
58. Masahiro Moriyama, Yoshihiro Takao, Wen-Xue Wang, Terutake Matsubara, Fatigue characteristics of Metal Impregnated C/C composites with Slots for Load Transfer, International Journal of Fatigue, International Journal of Fatigue, 32, 208-217, (2010)., 2010.01.
59. Satoshi Seike, Yoshihiro Takao, Wen-Xue Wang, Bearing damage evolution of a pinned joint in CFRP laminates under repeated tensile loading, International Journal of Fatigue, International Journal of Fatigue, 32, 72-81, (2010)., 2010.01.
60. D.M. Luo, W.X. Wang, Y. Takao, Elastic-Plastic analysis for the deep-sea Ti-alloy pressure vessel subjected to external hydrostatic pressure, Journal of Ship Mechanics, Journal of Ship Mechanics, Vol. 13(4), pp. 603-608 (2009)., 2009.12.
61. Y.L. Zhou, D.M. Luo, W.X. Wang, Y. Takao, Numerical simulation of effective stiffness and local stresses for wavy nanotube reinforced composites by the macro-microscopic homogenization method, Journal of Mechanical Strength, Journal of Mechanical Strength, Vol. 31(4), pp.670-674 (2009)., 2009.11.
62. Y. Imai, C.N. Xu, and W.X. Wang, Evaluation of stress concentration near the crack tip using mechanoluminescence coating, Proceeding of The 4th International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics, Proceeding of The 4th International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics, CD-ROM MA-II-4, pp. 1-5, Niigata, Japan, (2009.11)., 2009.11.
63. Z.X. Chen, Y. Takao, W.X. Wang, T. Matsubara and L.M. Ren, Surface modification of pure titanium and cell-materials interactions, Proceedings of Third International Conference on Mechanics of Biomaterials & Tissues, Proceedings of Third International Conference on Mechanics of Biomaterials & Tissues, MOBT2009-0113, Florida, USA, (2009.12)., 2009.12.
64. L.M. Ren, W.X. Wang, Y. Takao, and Z.X. Chen, Stress analysis of tooth supporting system based on tooth attachment, Proceedings of Third International Conference on Mechanics of Biomaterials & Tissues, Proceedings of Third International Conference on Mechanics of Biomaterials & Tissues, MOBT2009-0116, Florida, USA, (2009.12)., 2009.12.
65. W.X. WANG, Y. IMAI , T. Matsubara, Y.TAKAO and C.N. XU, A New Damage Detecting Method Using Smart Mechanoluminescence Sensor, Proceedings of the 6th Asian-Pacific Conference on Aerospace technology and Science, Proceedings of the 6th Asian-Pacific Conference on Aerospace technology and Science, CDROM C2-8, pp.1-8, (2009.11)., 2009.11.
66. Yoshihiro TAKAO, Junpei TAKAHASHI, Masahiko TERAJIMA, Wen-Xue WANG and Akihiko NAKASHIMA, An Easy and Quick Formulation of Patient-Specific 3D-FEM Dentate Mandible Model with Periodontal Ligament for Mechanical Analysis, Biomechanical Science and Engineering, Biomechanical Science and Engineering, Vol. 4, 550-561 (2009)., 2009.12.
67. Z X Chen, Y Takao, W X Wang, T Matsubara and L M Ren, Surface characteristics and in vitro biocompatibility of titanium anodized in phosphoric acid solution at different voltages, Biomedical Materials, doi.org/10.1088/1748-6041/4/6/065003, Biomedical Materials,4 (2009) 065003 (8pp). doi.org/10.1088/1748-6041/4/6/065003, 2009.12.
68. W.X. Wang, M. Nakata, Y. Takao, T. Matsubara, Experimental Investigation on Test Methods for Mode II Interlaminar Fracture Testing of Carbon Fiber Reinforced, Composites Part A, Composites Part A 40 (2009) pp. 1447-1455., 2009.04.
69. 汪 文学、羅 冬梅、高雄 善裕、松原 監壮、小原 敬史、中根 健志, 深海耐圧容器用新素材の開発, 三井造船技報, 三井造船技報、No. 196, (2009) pp. 11-18., 2009.02.
70. Chenshu Li, Chao-Nan Xu, Lin Zhang, Hiroshi Yamada, Yusuke Imai, Wen-Xue Wang, Dynamic visualization of stress distribution by mechanoluminescence image, Key Engineering Materials , Key Engineering Materials Vol. 388 (2009) pp 265-268., 2009.02.
71. W.X. Wang, T. Matsubara, Y. Takao,Y. Imai, and C.N. Xu, Visualization of Stress Distribution Using Smart Mechanoluminescence Sensor, Materials Science Forum, Materials Science Forum Vol. 614 (2009) pp 169-174., 2009.02.
72. Xue Jia, Wang Wenxue, Xu Yuanming, Analysis of thermal residual stress in CFRP/Al laminates , Design of Aircraft , Vol.28 No.5 (2008), pp.22-26., 2008.10.
73. W.X. WANG, T. Matsubara, Y.TAKAO, Y. IMAI and C.N. XU, Smart Strain Sensor Using SrAl2O4:Eu/Polymer Composite Film, Proceedings of The 8th China-Japan Joint Conference on Composite Materials, pp 357-360 (2008)., 2008.10.
74. Xue Jia, Wang Wenxue, Xu Yuanming1, Analysis of thermal residual stress in CFRP/Al laminates (CARALL)
, Proceedings of The 8th China-Japan Joint Conference on Composite Materials, pp 311-315 (2008)., 2008.10.
75. Terutake MATSUBARA, Yoshihiro TAKAO and Wen-Xue WANG, Failure Damage Evolution of a Mechanical Joint of Carbon Fiber Metal Laminates under the Bearing Failure Mode
, Proceedings of The 6th Asia-Australasian Conference on Composite Materials, Paper number O-077, pp 1-4 (2008)., 2008.07.
76. C. Li, Chao Nan Xu, Yusuke Imai, W.X. Wang, Lin Zhang, Hiroshi Yamada, Real-Time Monitoring of Dynamic Stress Concentration by Mechanoluminescent Sensing Film, Applied Mechanics and Materials, Vols. 13-14, pp 247-250 (2008)., 2008.06.
77. W.X. Wang, T. Matsubara, Y. Takao,Y. Imai, and C.N. Xu, Visualization of Stress Distribution Using Smart Mechanoluminescence Sensor, Proceedings of The 6th International Forum on Advanced Material Science and Technology, Proceedings of The 6th International Forum on Advanced Material Science and Technology, CDROM (A078)1-6 (2008)., 2008.06.
78. Yuko Harita, Wen-Xue Wang, Yoshihiro Takao, Terutake Matsubara, Shunsuke Baba, Makoto Higashijima, Iwao Kashima, , Development of galvanic corrosion resistant carbon fiber aluminum laminates based on nanocomposite coating, Proceedings of The US-Japan Conference on Composite Materials 2008, Proceedings of The US-Japan Conference on Composite Materials 2008, CDROM, (HTC-4)1~10 (2008)., 2008.06.
79. Satoshi Seike, Yoshihiro Takao and Wen-Xue Wang, Criterion for the final failure of a pin joint with bearing damage in CFRP laminates under cyclic tensile loading, Proceedings of The US-Japan Conference on Composite Materials 2008, Proceedings of The US-Japan Conference on Composite Materials 2008, CDROM, ( FAI-6)1~8 (2008)., 2008.06.
80. 汪 文学、高雄 善裕、松原 監壮, 人工歯冠用ナノウイスカー強化セラミックスの開発, 粉体および粉末冶金, 粉体および粉末冶金、55巻5号、359-364 (2008)., 2008.05.
81. Wen-Xue Wang, Yoshihiro Takao, Terutake Matsubara, Tensile strength and fracture toughness of C/C and metal infiltrated composite Si-C/C and Cu-C/C, Composites: Part A, Composites: Part A, 39, 231-242 (2008), 2008.02.
82. Wen-Xue Wang, Yoshihiro Takao, Terutake Matsubara, Fracture characteristics of C/C and metal infiltrated Composites Si-C/C and Cu-C/C
, Proceedings of the 6th Korea-Japan Joint Symposium on Composite Materials, Proceedings of the 6th Korea-Japan Joint Symposium on Composite Materials, Pohang, Korea, pp. 117-118, (2007.11)., 2007.11.
83. Yuko Harita, Yoshihiro Takao, Wen-Xue Wang, and Terutake Matsubara, Effects of silica nano-particles on properties of carbon fiber aluminum laminates, Proceedings of the 6th Korea-Japan Joint Symposium on Composite Materials, Proceedings of the 6th Korea-Japan Joint Symposium on Composite Materials, Pohang, Korea, pp. 42-43, (2007.11)., 2007.11.
84. Yoshihiro Takao, Noriyoshi Hirano, Satoshi Seike, Sinta Yamaguchi, Wen-Xue Wang, Load control to preserve the critical damage of bearing mode failure from additional damage evolution of a pin joint in quasi-isotropic CFRP laminates under tensile loading, Proceedings of International Conference on Advanced Technology in Experimental Mechanics’07 (ATEM’07),, CDROM ID-90286, pp. 1-6, (2007), 2007.09.
85. Wen-Xue Wang, Makoto Higashijima, Yoshihiro Takao, and Terutake Matsubara, Test methods for evaluating interlaminar shear strength of CFML, Proceedings of International Conference on Advanced Technology in Experimental Mechanics’07 (ATEM’07),, CDROM ID-90286, pp. 1-6, (2007)., 2007.09.
86. 森山匡洋、高雄 善裕、汪 文学, 切欠きを有する金属含浸C/C複合材の強度, 自動車技術, 第61巻第10号、pp. 70-76, (2007), 2007.10.
87. Satoshi Seike, Yoshihiro Takao, Wen-Xue Wang, Terutake Matsubara, Critical fatigue and quasi-static bearing damages of a pinned joint in both [0/±45/90]3s and [90/±45/0]3s CFRP laminates, Proceedings of ICCM-16, Kyoto, CDROM ID-224790, pp. 1-10, (2007)., 2007.06.
88. Wen-Xue Wang, Yoshihiro Takao, Terutake Matsubara, Galvanic corrosion-resistant carbon fiber metal laminates, Proceedings of ICCM-16, CDROM ID-224701, pp. 1-10, (2007)., 2007.06.
89. Dong-Mei Luo, Wen-Xue Wang, Yoshihiro Takao, Application of homogenization method on the analysis of micro-stress distribution in non-continuous carbon nanotube reinforced composites, Acta Materiae Compositae Sinica, Vol. 24, No.3, pp. 186-192, (2007), 2007.03.
90. 清家  聡、高雄 善裕、汪 文学, CFRPピン継手の疲労と準静的引張り負荷における強度と損傷進展の比較, 日本複合材料学会誌, 第33巻第5号, pp.161-169, (2007), 2007.05.
91. N. Hirano, Y. Takao, W.X. Wang, Effects of Temperature on the Bearing Strength of CF/Epoxy Pinned Joints, Journal of Composite Materials, Vol. 41, No. 3, pp.335-351, (2007), 2007.02.
92. Dong-Mei Luo, Wen-Xue Wang, Yoshihiro Takao and Koichi Kakimoto, The Application of Homogenization Method on the Evaluation and Analysis of the Effective Stiffness for Non-continuous Carbon nano-tube/polymer Composites, Polymer Composites, Vol. 26, No. 5, pp. 688-695, (2007)., 2007.06.
93. Dong-Mei Luo, Wen-Xue Wang, Yoshihiro Takao, Effects of the Distribution and Geometry of Carbon Nanotubes on the Macroscopic Stiffness and Microscopic Stresses of Nanocomposites, Composites Science and Technology, Vol. 67, No.14, pp. 2947-2958, (2007)., 2007.06.
94. 汪文学、高雄善裕、松原監壮、内村治弘、馬場俊輔、東島誠, 複合皮膜による耐ガルバニック腐食CFMLの創製, 材料, Vol. 56, No.5, pp. 420-425, 2007.05.
95. S. Seike, Y. Takao, W.X. Wang, T. Matsubara, Fatigue and static damage of pinned joint in CFRP, American Institute of Aeronautics and Astronautics, AIAA Paper, No. 2007-2268, pp. 1-11, 2007.04.
96. W.X. Wang, Y. Takao, I. Kashima, T. Matsubara, CFRP/Al-FRML Based on Nano-composite Coating and Its Mechanical Properties, American Institute of Aeronautics and Astronautics, AIAA Paper, No. 2007-2268, 2007.04.
97. Dongmei Luo, Wen-Xue Wang, Yoshihiro Takao and Koichi Kakimoto, New method to determine the exact periodic boundary conditions for macro-microscopic homogenization analysis and its application on the prediction of effective elastic constants of periodic materials, Journal of Mechanical Strength, Vol.28, No.4, pp.517-523, 2006.10.
98. W.X. Wang, Y. Takao, T. Matsubara, Development of carbon fiber reinforced aluminum laminates, Characterizations and Applications of Composites (Edited by Y. Zhang and Q.Q. Ni)
China Agricultural Science and Technology Press (2006)
, pp. 94-103, 2006.08.
99. Dongmei Luo, Wen-Xue Wang, Yoshihiro Takao and Koichi Kakimoto, The numerical prediction of effective properties of non-continuous carbon nano-reinforced composites by Macro-microscopic homogenization method, Computational Method in Engineering and Sicence, EPMESC X,Tsinghua University Press & Springer, pp. 823-838, 2006.08.
100. Masahiro Moriyama, Yoshihiro Takao, Wen-Xue Wang and Terutake Matsubara, Strength of Metal Impregnated C/C under Tensile Cyclic Loading, Composites Science and Technology, 66, pp. 3070-3082, 2006.04.
101. Wen-Xue Wang, Dongmei Luo, Yoshihiro Takao and Koichi Kakimoto,, New Solution Method for Homogenization Analysis and its Application to the Prediction of Macroscopic Elastic Constants of Materials with Periodic Microstructures, Computer & Structure, 84, pp. 991-1001, 2006.04.
102. M. Moriyama, Y. Takao, W.X. Wang, T. Matsubara, tensile cyclic strength and macroscopic failure characteristics of C/C and the metal impregnated C/C, 九州大学応用力学研究所, No. 129, pp 25-30, 2005.09.
103. M. Moriyama, Y. Takao, W.X. Wang,, Microscopic investigation of tensile fatigue damage of C/C and metal impregnated C/C, 九州大学応用力学研究所, No. 129, pp 31-36, 2005.09.
104. D.M. Luo, W.X. Wang, Y. Takao, K. Kakimoto, Prediction of stiffness and stresses for carbon nano-tube composites based on homogenization analysis, 九州大学応用力学研究所, No. 129, pp 37-46, 2005.09.
105. W. X. Wang, D. M. Luo, Y. Takao and K. Kakimoto, Numerical prodiction of the stiffness and local stresses fornano-composites with periodic distributions of nanotubes, Proceedings of ICCM-15, Proceedings of ICCM-15, Durban, South Africa, CDROM ID-p02l, pp. 1-10, (2005)., 2005.07.
106. M. Moriyama, Y. Takao, W.X. Wang and T. Matsubara, Strength of metal impregnanted C/C under tensile and fatigue loadi, Proceeding of the 11th US-Japan Conference on Composite Materials, Proceeding of the 11th US-Japan Conference on Composite Materials, pp. C/C2.1-2.4, (2004)., 2004.09.
107. Y. Takao, Y. Suematsu, T. Mtsubara, W.X. Wang, N. Miyano and S. Ukon, Nano-whisker reinforced glass ceramics for artificial tooth, Proceeding of the 11th US-Japan Conference on Composite Materials, Proceeding of the 11th US-Japan Conference on Composite Materials、pp. nano5.1-5.4, (2004)., 2004.09.
108. S. Baba, Y. Takao, W. X. Wang and T. Matsubara, Effects of anodizing on the interlaminar shear strength of carbon fiber reinforced aluminum laminates, Proceeding of the 5th Korea/Japan Joint Workshop on Aeronautics and Astronautics, Proceeding of the 5th Korea/Japan Joint Workshop on Aeronautics and Astronautics, pp. 1-6, (2004)., 2004.07.
109. 平野憲芳、高雄善裕、松原 監壮、汪 文学, CF/Epoxyピン継手ベアリング強度に及ぼす温度効果の基礎的検討, 日本複合材料学会誌, Vol. 30、No. 3、pp. 102-110、(2004)., 2004.01.
110. W.X. Wang and Y. Takao, Isoparameteric Finite Point Method in Computational Mechanics, Computational Mechanics, 10.1007/s00466-004-0547-3, 33, 6, 481-490, Vol. 33, pp. 481-490, (2004)., 2004.01.
111. W.X. Wang, Y. Takao and M. Nakata, Effects of friction on the measurement of the mode II interlaminar fracture toughness of composite laminates, Proceedings of ICCM-14, San Diego, CDROM ID-1409, pp. 1-8,, 2003.07.
112. N. Hirano, W.X. Wang and Y. Takao, The effects of temperature on the bearing strength of CFRP bolted joint with washer constraining, Proceedings of ICCM-14, San Diego, CDROM ID-1450, pp. 1-9,, 2003.07.
113. W. X. Wang and Y. Takao, Effects of friction on the experimental evaluation of the mode II interlaminar fracture toughness of composite laminates, Proceeding of the Third Japan-Canada Joint Conference, 2003.03.
114. H.-S. Kim, W.X. Wang, Y. Takao, and G. Ben, Effects of temperature on mode II fracture toughness of multidirectional CFRP laminates, INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 10.1142/S0217979203019563, 17, 8-9, 1717-1723, 17 (8-9): 1717-1723 Part 2,, 2003.01.
115. Y. Takao, S. Matsunaga and W. X. Wang, The role of friction on the bearing mode failure of a pinned joint of CFRP, Proceeding of the Tenth U.S.-JAPAN Conference on Composite Materials, pp. 839-848,, 2002.09.
116. W. X. Wang, Y. Takao, T. Matsubara and H.S. Kim, Improvement of the interlaminar fracture toughness of composite laminates by whisker reinforced interlamination, Composites Science and Technology, 10.1016/S0266-3538(02)00052-0, 62, 6, 767-774, 62, pp. 767-774,, 2002.01.
117. H.-S. Kim, W.X. Wang and Y. Takao, , Effects of temperature and fiber orientation on mode II fracture behavior of carbon/epoxy composit, Proceedings of 5th International Conference on Durability Analysis of Composite Systems,, Tokyo, pp. 377-383,, 2001.11.
118. W. X. Wang, K. Iihoshi, T. Matsubara and Y. Takao, Tensile Properties of C/C and Metal Impregnated C/C Composites, Proceedings of ICCM-13, Beijing, CDROM ID-1432, pp. 1-8,, 2001.01.
119. T. Matsubara, Y. Takao, W. X. Wang and S. Hanzawa, Effects of Contact Pressure and Reciprocation Number on the Coefficients of Friction of Carbon/Carbon
Composites with Metal Impregnation, Proceedings of The second Asia-Australasian Conference on Composite Materials
(ACCM-2000)
, Kyongju, Korea, Vol. 2, pp. 701-706,, 2000.08.
120. Qing-Qing Ni, N. Ohsako, T. Ohki, M. Sakaguchi, W.X. Wang, M. Iwamoto, Development of Smart Composites Based on Shape Memory Polymer, International Symposium on Smart Structures & Microsystems (IS3M), Hong Kong, C2-1, pp. 1-6,, 2000.07.
121. W.X. Wang, Y. Takao, T. Matsubara and H.-S. Kim, Interlaminar Fracture Toughness of Composite Laminates with Whisker Reinforced Interlamination, Proceeding of the 9th US-Japan Conference on Composite Materials, Mishima, pp. 323-330,, 2000.07.
122. N. Hirano, S. Matsunaga, W.X. Wang, T. Matsubara and Y. Takao, Three-Dimensional Investigation of the Bearing Failure Mode of Quasi-isotropic CF/Epoxy Laminates under Various Environmental Temperatures, Proceedings of ICCM-13, Beijing, CDROM ID-1451, pp. 1-10,, 2000.06.
123. Y. Xiao, W.X. Wang and Y. Takao, The Effective Friction Coefficient of a Laminate Composite, and Analysis of Pin-Loaded Plates, Journal of Composite Materials, 10.1106/V82B-A1BB-9PWR-MXTC, 34, 1, 69-87, Vol. 34, pp. 70-87,, 2000.06.
124. H.S. Kim, W.X. Wang and Y. Takao, Effects of Temperature and Stacking Sequence on the Mode I Interlaminar Fracture Behavior of Composite Laminates, Key Engineering Materials, 183-1, 815-820, Vols. 183-187, pp. 815-820,, 2000.01.
125. W.X. Wang、F.G.Yuan and Y. Takao, A Unified Loading Parameter for Creep Crack Growth, Proc. R. Soc. Lond. A, 10.1098/rspa.2000.0512, 456, 1993, 163-183, Vol. 456, pp. 163-183,, 2000.01.
126. Q.-Q. Ni, M. Iwamoto, K. Kurashiki and W. X. Wang, Quantitative Evaluation of Interfacial Fracture Energy of Fiber/Matrix, Proceedings of IMMM’99, Beijing, pp. 103-108,, 1999.10.
127. S. Matsunaga, T. Matsubara, W.X. Wang and Y. Takao, Effects of fiber orientation and high contact pressure on the friction coefficients between CFRP and stainless
steel, Proceedings of the Sixth Japan International SAMPE Symposium, Vol. 1, pp. 149-152,, 1999.10.
128. H.-S. Kim, W.X. Wang and Y. Takao, Effects of Temperature and Fiber Orientation on the Mode I Interlaminar Fracture Toughness of Carbon/Epoxy Composites, Proceedings of ICCM-12, CDROM Paper No.276, pp. 1-10,, 1999.07.
129. H.-S. Kim, W.X. Wang and Y. Takao, Mode I interlaminar fracture toughness of a DCB specimen with edge delamination – effects of temperature and fiber
orientation –, Proceedings of the Sixth Japan International SAMPE Symposium, Tokyo, Vol. 1, pp. 97-100,, 1999.10.
130. W.X. Wang, Y. Takao, T. Matsubara and K.-S. Kim, Interlaminar Reinforcement to Composite Laminates by Distributing Whiskers Along the Interface, Proceedings of ICCM-12, Paris, CDROM Paper No.205, pp. 1-7,, 1999.07.
131. H.-S. Kim, W.X. Wang and Y. Takao, Evaluation by FEM of temperature-dependent damage behavior in quasi-isotropic carbon/epoxy laminates, Adv. Composite Mater., 8, 3, 247-257, Vol.. 8, No. 3, pp. 247-257,, 1999.06.
132. T. Otsu, W.X. Wang and Y. Takao, Asymmetrical Cracks Parallel to an Interface between Dissimilar Materials, International Journal of Fracture, 10.1023/A:1018769902240, 96, 1, 75-100, Vol. 96, pp. 75-100,, 1999.04.
133. H.-S. Kim, W.X. Wang and Y. Takao, Temperature-Dependent Damage Behaviors in CFRP Laminated Plates-Evaluation by FEM, Proceedings of 8-th Japan-U.S. Conference on Composite Materials, 743-752, Baltimore, Maryland, pp. 743-752,, 1998.09.
134. 松原監壮、汪 文学、高雄 善裕, 一方向CFRP積層板(垂直方向)とSS41相手材の摩擦特性—摩擦係数に及ぼす接触面圧と摺動回数の影響—, 強化プラスチック, 44、8、pp. 305-312,, 1998.08.
135. 金 炯秀、黄木 景二、松原監壮、汪 文学、高雄 善裕, 各温度環境下におけるCarbon/Epoxy擬似等方性積層板の微視的損傷, 材料, 47、6、pp. 599-605,, 1998.06.
136. 肖 毅、松原監壮、汪 文学、高雄 善裕, 一方向炭素繊維強化エポキシ複合材料の繊維方向がその摩擦特性に与える影響, 材料, 47、6、pp. 618-624,, 1998.06.
137. 肖 毅、汪 文学、高雄 善裕, CFRP積層板端面における摩擦係数, 日本複合材料学会誌, 24、3、pp. 82-88, 1998.06.
138. W.X. Wang, Y. Takao, F.G. Yuan, B.D. Potter, and R.H. Pater, The Interlaminar Mode-I Fracture of IM7/LARC-RP46 Composites at High Temperatures, Journal of Composite Materials, 32, 16, 1508-1526, Vol. 32, pp. 1508-1526,, 1998.04.
139. 松永俊祐、古賀洋治、汪 文学、松原監壮、黄木景二、高雄善裕, CFRP積層板に及ぼす静水圧の効果, 九州大学応用力学所報第84号, pp. 1-10、, 1998.02.
140. 丸山豊和、黄木景二、松原監壮、汪 文学、高雄善裕, CF/Epoxy擬似等方性積層板の損傷進展に及ぼす温度と湿度の影響, 九州大学応用力学所報第84号, pp. 11-17,, 1998.02.

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