Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Hisao MATSUNAGA Last modified date:2018.07.25

Professor / Strength of materials / Department of Mechanical Engineering / Faculty of Engineering


Papers
1. Kentaro Wada, Soma Yoshimura, Tomoko Yamamoto, Yoshihiro Ohkomori, Hisao Matsunaga, Shear-mode Crack Initiation Behavior in the Martensitic and Bainitic Microstructures, 12th International Fatigue Congress, FATIGUE 2018 MATEC Web of Conferences, 165, 04009, 2018.05.
2. Yuhei Ogawa, Domas Birenis, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Øystein Prytz, Annett Thøgersen, Hydrogen-assisted fatigue crack propagation in a pure BCC iron. Part I
Intergranular crack propagation at relatively low stress intensities, 12th International Fatigue Congress, FATIGUE 2018 MATEC Web of Conferences, 10.1051/matecconf/201816503011, 165, 2018.05, The role of hydrogen on intergranular (IG) fracture in hydrogen-assisted fatigue crack growth (HAFCG) of a pure iron at low stress intensity was discussed in terms of the microscopic deformation structures near crack propagation paths. The main cause of IG fracture was assumed to be the hydrogen-enhanced dislocation structure evolution and subsequent microvoids formation along the grain boundaries. Additionally, the impact of such IG cracking on the macroscopic FCG rate was evaluated according to the dependency of IG fracture propensity on the hydrogen gas pressure. It was first demonstrated that the increased hydrogen pressure results in the larger area fraction of IG and corresponding faster FCG rate. Moreover, gaseous hydrogen environment also had a positive influence on the FCG rate due to the absence of oxygen and water vapor. The macroscopic crack propagation rate was controlled by the competition process of said positive and negative effects..
3. Domas Birenis, Yuhei Ogawa, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Øystein Prytz, Annett Thøgersen, Hydrogen-assisted fatigue crack propagation in a pure BCC iron. Part II
Accelerated regime manifested by quasi-cleavage fracture at relatively high stress intensity range values, 12th International Fatigue Congress, FATIGUE 2018 MATEC Web of Conferences, 10.1051/matecconf/201816503010, 165, 2018.05, Hydrogen effect on fatigue performance at relatively high values of stress intensity factor range, ΔK, of pure BCC iron has been studied with a combination of various electron microscopy techniques. Hydrogen-assisted fatigue crack growth rate is manifested by a change of fracture features at the fracture surface from ductile transgranular in air to quasi-cleavage in hydrogen gas. Grain reference orientation deviation (GROD) analysis has shown a dramatic suppression of plastic deformation around the crack wake in samples fatigued in hydrogen. These results were verified by preparing site-specific specimens from different fracture features by using Focused Ion Beam (FIB) technique and observing them with Transmission Electron Microscope (TEM). The FIB lamella taken from the sample fatigued in air was decorated with dislocation cell structure indicating high amount of plasticity, while the lamella taken from the quasi-cleavage surface of the sample fatigued in hydrogen revealed a distribution of dislocation tangles which corresponds to smaller plastic strain amplitude involved at the point of fracture. These results show that a combination of critical hydrogen concentration and critical stress during fatigue crack growth at high ΔK values triggers cleavage-like fracture due to reduction of cohesive force between matrix atoms..
4. Domas Birenis, Yuhei Ogawa, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Øystein Prytz, Annett Thøgersen, Interpretation of hydrogen-assisted fatigue crack propagation in BCC iron based on dislocation structure evolution around the crack wake, Acta Materialia, 10.1016/j.actamat.2018.06.041, 156, 245-253, 2018.06, [URL].
5. Yuhei Ogawa, Domas Birenis, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Øystein Prytz, Annett Thøgersen, The role of intergranular fracture on hydrogen-assisted fatigue crack propagation in pure iron at a low stress intensity range, Materials Science and Engineering: A, 10.1016/j.msea.2018.07.014, Available online 6 July 2018, 2018.07, [URL].
6. , [URL].
7. Saburo Matsuoka, Osamu Takakuwa, Saburo Okazaki, Michio Yoshikawa, Junichiro Yamabe, Hisao Matsunaga, Peculiar temperature dependence of hydrogen-enhanced fatigue crack growth of low-carbon steel in gaseous hydrogen, Scripta Materialia, 10.1016/j.scriptamat.2018.05.035, 154, 101-105, 2018.09, [URL].
8. Jean-Gabriel Sezgin, Hallvard G. Fjær, Hisao Matsunaga, Junichiro Yamabe, Vigdis Olden , Hydrogen Trapping in X70 Structural Pipeline Steel and Weldments, Proceedings of the Twenty-eighth (2018) International Ocean and Polar Engineering Conference, 2018.06.
9. Osamu Takakuwa, Junichiro Yamabe, Hisao Matsunaga, Yoshiyuki Furuya, Saburo Matsuoka, Comprehensive Understanding of Ductility Loss Mechanisms in Various Steels with External and Internal Hydrogen, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 10.1007/s11661-017-4323-3, 48A, 11, 5717-5732, 2017.11, [URL].
10. Naoaki Nagaishi, Michio Yoshikawa, Saburo Okazaki, Hisao Matsunaga, Junichiro Yamabe, Saburo Matsuoka, Fatigue Life Properties of Circumferentially- Notched, Type 304 Austenitic Stainless Steel in Hydrogen Gas, ASME 2017 Pressure Vessels and Piping Conference, 2017.07.
11. Saburo Okazaki, Hisao Matsunaga, Shigeru Hamada, Masami Nakamura, Hisatake Itoga, Saburo Matsuoka, A Case Study of a Cooling Pipe for a Pre-Cooler Used in a 70MPa Hydrogen Station, ASME 2017 Pressure Vessels and Piping Conference, 2017.07.
12. Yuhei Ogawa, Junichiro Yamabe, Hisao Matsunaga, Saburo Matsuoka, Excellent Resistance to Hydrogen Embrittlement of High-Strength Copper-Based Alloy, ASME 2017 Pressure Vessels and Piping Conference, 2017.07.
13. Osamu Takakuwa, Junichiro Yamabe, Hisao Matsunaga, Yoshiyuki Furuya, Saburo Matsuoka, Recent Progress on Interpretation of Tensile Ductility Loss for Various Austenitic Stainless Steels With External and Internal Hydrogen, ASME 2017 Pressure Vessels and Piping Conference, 10.1115/PVP2017-65671, 2017.07.
14. Kentaro Wada, Adeyinka Abass, Saburo Okazaki, Yoshihiro Fukushima, Hisao Matsunaga, Kaneaki Tsuzaki, Fatigue Crack Threshold of Bearing Steel at a Very Low Stress Ratio, Procedia Structural Integrity, https://doi.org/10.1016/j.prostr.2017.11.104, 7, 391-398, 2017.12.
15. Hisao Matsunaga, Sho Hashimoto, Hiroki Komata, , Quantative Evaluation of the Flaking Strength of Rolling Bearings with Small Defects:(Part 2: Evaluation of the Flaking Strength of Rolling Bearings with Small Drilled Holes, based on the Stress Intensity Factor), Procedia Structural Integrity, 7, 460-467, 2017.08.
16. Sho Hashimoto, Hiroki Komata, Hisao Matsunaga, Quantative Evaluation of the Flaking Strength of Rolling Bearings with Small Defects:(Part 1: FEM Analyses of the Stress Intensity Factor, Kll, under Rolling Contact), Procedia Structural Integrity, 7, 453-459, 2017.08.
17. Yuhei Ogawa, Hisao Matsunaga, Junichiro Yamabe, Michio Yoshikawa, Matsuoka Saburo, Unified evaluation of hydrogen-induced crack growth in fatigue tests and fracture toughness tests of a carbon steel, International Journal of Fatigue, https://doi.org/10.1016/j.ijfatigue.2017.06.006, 103, pp. 223-233, 2017.10, [URL].
18. Yuhei Ogawa, Domas Birenis, Hisao Matsunaga, Annett Thøgersen, Øystein Prytz, Osamu Takakuwa, Junichiro Yamabe, Multi-scale observation of hydrogen-induced, localized plastic deformation in fatigue-crack propagation in a pure iron, Scripta Materialia, https://doi.org/10.1016/j.scriptamat.2017.06.037, 140, pp. 13-17, 2017.11, [URL].
19. Hisao Matsunaga, Takakuwa Osamu, Junichiro Yamabe, Matsuoka Saburo, Hydrogen-enhanced fatigue crack growth in steels and its frequency dependence, Philosophical Transactions of the Royal Society A, 10.1098/rsta.2016.0412, 375, 2098, 2017.07, [URL].
20. Junichiro Yamabe, Michio Yoshikawa, Hisao MATSUNAGA, Matsuoka Saburo, Hydrogen trapping and fatigue crack growth property of low-carbon steel in hydrogen-gas environment, International Journal of Fatigue, 102, pp. 202-213, 2017.09, [URL].
21. Yuhei Ogawa, Junichiro Yamabe, Hisao Matsunaga, Matsuoka Saburo, Material performance of age-hardened beryllium–copper alloy, CDA-C17200, in a high-pressure, gaseous hydrogen environment, International Journal of Hydrogen Energy, https://doi.org/10.1016/j.ijhydene.2017.04.270, 42, 26, 16887-16900, 2017.06, [URL].
22. Junichiro Yamabe, Takakuwa Osamu, Hisao Matsunaga, Hisatake Itoga, Matsuoka Saburo, Hydrogen diffusivity and tensile-ductility loss of solution-treated austenitic stainless steels with external and internal hydrogen, International Journal of Hydrogen Energy, https://doi.org/10.1016/j.ijhydene.2017.04.055, 42, 18, pp. 13289-13299, 2017.05, [URL].
23. Saburo Okazaki, Kentaro Wada, Hisao Matsunaga, Masahiro Endo, The influence of static crack-opening stress on the threshold level for shear-mode fatigue crack growth in bearing steels, Engineering Fracture Mechanics, 174, pp. 127-138, 2017.04, [URL].
24. , [URL].
25. Mari Aman, Saburo Okazaki, Hisao Matsunaga, Gary Marquis, Heikki Remes, Interaction effect of adjacent small defects on the fatigue limit of a medium carbon steel, Fatigue & Fracture of Engineering Materials & Structures, 10.1111/ffe.12482, 40, pp. 130-144, 2017.01, [URL].
26. Matsuoka Saburo, Junichiro Yamabe, Hisao MATSUNAGA, Hydrogen-induced ductility loss of austenitic stainless steels for slow strain rate tensile testing in high-pressure hydrogen gas, Solid State Phenomena, 258, pp. 259-264, 2016.12.
27. Junichiro Yamabe, Daiki Takagoshi, Hisao Matsunaga, Matsuoka Saburo, Takahiro Ishikawa, Takenori Ichigi, High-strength copper-based alloy with excellent resistance to hydrogen embrittlement, International Journal of Hydrogen Energy, https://doi.org/10.1016/j.ijhydene.2016.05.156, 41, 33, pp. 15089-15094, 2016.09, [URL].
28. Junichiro Yamabe, Michio Yoshikawa, Hisao MATSUNAGA, Matsuoka Saburo, Effects of hydrogen pressure, test frequency and test temperature on fatigue crack growth properties of low-carbon steel in gaseous hydrogen, Structural Integrity Procedia, 2, pp. 525-532, 2016.07.
29. Saburo MATSUOKA, Junichiro Yamabe, Hisao MATSUNAGA, Mechanism of Hydrogen-Assisted Surface Crack Growth of Austenitic Stainless Steels in Slow Strain Rate Tensile Test, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP(2016), 2016.07.
30. Yuhei Ogawa, Hisao MATSUNAGA, Michio Yoshikawa, Junichiro Yamabe, Saburo MATSUOKA, Fatigue life properties and anomalous macroscopic fatigue fracture surfaces of low carbon steel JIS-SM490B in high-pressure hydrogen gas environment, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP(2016), 2016.07.
31. Hisao MATSUNAGA, Takuya Nakashima, Kosei Yamada, Takashi Matsuo, Junichiro Yamabe, Saburo MATSUOKA, Effect of Test Frequency on Hydrogen-enhanced Fatigue Crack Growth in Type 304 Stainless Steel and Ductile Cast Iron, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP(2016), 2016.07.
32. Setsuo Takaki, Shigenobu Nanba, Kazunari Imakawa, MACADRE ARNAUD PAUL ALAIN, Junichiro Yamabe, Hisao Matsunaga, Matsuoka Saburo, Determination of hydrogen compatibility for solution-treated austenitic stainless steels based on a newly proposed nickel-equivalent equation, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2016.06.193, 41, 33, pp. 15095-15100, 2016.07, [URL].
33. Junichiro Yamabe, Michio Yoshikawa, Hisao Matsunaga, Matsuoka Saburo, Effects of hydrogen pressure, test frequency and test temperature on fatigue crack growth properties of low-carbon steel in gaseous hydrogen, Structural Integrity Procedia, 2016.06.
34. Masahiro Endo, Saburo Okazaki, Hisao Matsunaga, Shigeaki Moriyama, Kiyotaka Munaoka, Keiji Yanase, A New Fatigue Testing Machine for Investigating the Behavior of Small Shear-Mode Fatigue Cracks, Experimental Techniques, 10.1111/ext.12140, 40, pp. 1065-1073, 2016.06, [URL].
35. Kaneaki Tsuzaki, Koki Fukuda, Motomichi Koyama, Hisao Matsunaga, Hexagonal close-packed Martensite-related Fatigue Crack Growth under the Influence of Hydrogen: Example of Fe–15Mn–10Cr–8Ni–4Si Austenitic Alloy, Scripta Materialia, 1016/j.scriptamat.2015.10.016, Vol. 113, pp. 6-9, 2016.03, [URL].
36. Saburo Matsuoka, Junichiro Yamabe, Hisao Matsunaga, Criteria for determining hydrogen compatibility and the mechanisms for hydrogen-assisted, surface crack growth in austenitic stainless steels, Engineering Fracture Mechanics, 10.1016/j.engfracmech.2015.12.023, Vol. 153, pp. 103-127, 2016.01, [URL].
37. Hisao Matsunaga, Chengqi Sun, Youshi Hong, Yukitaka Murakami, Dominant Factors for Very-High-Cycle Fatigue of High-Strength Steels and a New Design Method for Components, Fatigue & Fracture of Engineering Materials & Structures, 10.1111/ffe.12331, Vol. 38, pp. 1274-1284, 2015.11, [URL].
38. , [URL].
39. Masahiro Endo, Takumi Saito, Shigeaki Moriyama, Saburo Okazaki, Hisao MATSUNAGA, FRICTION AND WEAR PROPERTIES OF HEAT-TREATED Cr-Mo STEEL DURING RECIPROCATING SLIDING CONTACT WITH SMALL RELATIVE MOTION, Proceedings of 4th International Conference on Fracture Fatigue and Wear Wear, FFW 2015, 3, 215-220.
40. Pablo Lorenzino, Saburo Okazaki, Hisao MATSUNAGA, Yukitaka Murakami, Effect of small defect orientation on fatigue limit of carbon steels, Fatigue & Fracture of Engineering Materials & Structures, Vol. 38, pp. 1076-1086, 2015.09, [URL].
41. Hisao MATSUNAGA, Ryota Kondo, Yamabe Junichiro, Michio Yoshikawa, Hisatake ITOGA, Saburo MATSUOKA, HYDROGEN-ASSISTED CRACKING OF CR-MO STEEL IN SLOW STRAIN RATE TENSILE TEST WITH HIGH-PRESSURE GASEOUS HYDROGEN, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 2015.07.
42. Hisatake ITOGA, Hisao MATSUNAGA, Yamabe Junichiro, Saburo MATSUOKA, EFFECTS OF EXTERNAL AND INTERNAL HYDROGEN ON TENSILE PROPERTIES OF AUSTENITIC STAINLESS STEELS CONTAINING ADDITIVE ELEMENTS, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 2015.07.
43. Yamabe Junichiro, Hisao MATSUNAGA, Yoshiyuki Furuya, Saburo MATSUOKA, ON THE MATERIAL QUALIFICATION AND STRENGTH DESIGN FOR HYDROGEN SERVICE, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 2015.07.
44. Pablo Lorenzino, Jean-Yves Buffiere, Saburo Okazaki, Yukitaka Murakami, Hisao Matsunaga, Synchrotron 3D characterization of arrested fatigue cracks initiated from small tilted notches in steel, Frattura ed Integrità Strutturale, 10.3221/IGF-ESIS.33.27, Vol. 33, pp. 215-220, 2015.06, [URL].
45. Yamabe Junichiro, Hisatake ITOGA, Torhu Awane, Takashi Matsuo, Hisao MATSUNAGA, Saburo MATSUOKA, Pressure cycle testing of Cr-Mo steel pressure vessels subjected to gaseous hydrogen, Journal of Pressure Vessel Technology, 10.1115/1.4030086, Paper No: PVT-14-1204, (13 pages), 2015.04, [URL].
46. Hisao Matsunaga, Michio Yoshikawa, Ryota Kondo, Junichiro Yamabe, Saburo Matsuoka, Slow strain rate tensile and fatigue properties of Cr–Mo and carbon steels in a 115 MPa hydrogen gas atmosphere, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2015.02.098, Vol. 40, 16, pp. 5739-5748, 2015.03, [URL].
47. Junichiro Yamabe, Hisao Matsunaga, Yoshiyuki Furuya, Shigeru Hamada, Hisatake Itoga, Michio Yoshikawa, Etsuo Takeuchi, Saburo Matsuoka, Qualification of chromium-molybdenum steel based on the safety factor multiplier method in CHMC1-2014, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2014.10.114, Vol. 40, 1, pp. 719-728, 2015.01, [URL].
48. Hisao MATSUNAGA, Chengqi Sun, Youshi Hong, Yukitaka Murakami, Dominant Factors for Very High Cycle Fatigue of High Strength Steels, Proceedings of the Sixth International Conference on Very High Cycle Fatigue (VHCF-6), 2014.10.
49. Saburo OKAZAKI, Hisao MATSUNAGA, Tohru UEDA, Hiroki KOMATA, Masahiro ENDO, A Practical Expression for Evaluating the Small Shear-mode Fatigue Crack Threshold in Bearing Steel, Theoretical and Applied Fracture Mechanics, 10.1016/j.tafmec.2014.07.016, Vol. 73, pp. 161-169, 2014.08, [URL].
50. Hisatake ITOGA, Takashi Matsuo, Akihiro Orita, Hisao MATSUNAGA, Saburo MATSUOKA, Ryuichi Hirotani, SSRT AND FATIGUE CRACK GROWTH PROPERTIES OF HIGH-STRENGTH AUSTENITIC STAINLESS STEELS IN HIGH-PRESSURE HYDROGEN GAS, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 10.1115/PVP2014-28640, 2014.07, [URL].
51. Yamabe Junichiro, Hisatake ITOGA, Torhu Awane, Hisao MATSUNAGA, Shigeru Hamada, Saburo MATSUOKA, FATIGUE-LIFE AND LEAK-BEFORE-BREAK ASSESSMENTS OF CR-MO STEEL PRESSURE VESSELS WITH HIGH-PRESSURE GASEOUS HYDROGEN, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 10.1115/PVP2014-28604, 2014.07, [URL].
52. Hisao MATSUNAGA, Michio Yoshikawa, Hisatake ITOGA, Yamabe Junichiro, Shigeru Hamada, Saburo MATSUOKA, TENSILE- AND FATIGUE-PROPERTIES OF LOW ALLOY STEEL JIS-SCM435 AND CARBON STEEL JIS-SM490B IN 115 MPA HYDROGEN GAS, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 10.1115/PVP2014-28511, 2014.07, [URL].
53. Pablo Lorenzino, Saburo Okazaki, Hisao MATSUNAGA, Yukitaka MURAKAMI, Effect of orientation of small defects on fatigue limit of steels, MATEC Web of Conferences, 10.1051/matecconf/20141207001, 12, Article number 07001, 2014.06.
54. Hisao MATSUNAGA, Hiroki KOMATA, Yamabe Junichiro, Yoshihiro FUKUSHIMA, Saburo MATSUOKA, Effect of Size and Depth of Small Defect on the Rolling Contact Fatigue Strength of Bearing Steel JIS-SUJ2, Procedia Materials Science, 10.1016/j.mspro.2014.06.268, 3, 1663-1668, 2014.06.
55. Hisao MATSUNAGA, Masahiko MAKIZAKI, Darrell F. SOCIE, Keiji YANASE, Masahiro ENDO, Acceleration of fatigue crack growth due to occasional mode II loading in 7075 aluminum alloy, Engineering Fracture Mechanics, 10.1016/j.engfracmech.2014.04.015, Vol. 123, pp. 126-136, 2014.05, [URL], The effect of an occasional mode II loading on the subsequent mode I fatigue crack growth was investigated in a thin-walled 7075-T6511 aluminum alloy tube. Careful observation of crack growth behavior revealed that an occasional mode II loading has two contrasting effects on the subsequent crack growth. First is a retardation effect that is associated with a crack closure development due to the mode II loading. However, this effect was insignificant with respect to the crack growth life as a whole. Second is an acceleration effect that is associated with an accelerated crack growth rate in mode II. It was found that, in a relatively high ΔK regime, mode II crack growth was from one to two orders of magnitude faster than mode I crack growth. This study shows that mode II crack growth should be considered as a predominant factor in evaluating the effect of an occasional mode II loading for a mode I crack in 7075 aluminum alloy..
56. YUKITAKA MURAKAMI, Yamabe Junichiro, Hisao MATSUNAGA, Microscopic Mechanism of Hydrogen Embrittlement in Fatigue and Fracture, Key Engineering Materials, Vol. 592, pp. 3-13, 2014.01.
57. Hisatake ITOGA, Hisao MATSUNAGA, Saburo MATSUOKA, Effect of Hydrogen Gas on the Growth of Small Fatigue Crack in JIS-SCM435, Advanced Materials Research, Vol. 891-892, pp. 942-947, 2014.01.
58. , [URL].
59. Hisao MATSUNAGA, Teruki USUDA, Keiji YANASE, Masahiro ENDO, Ductility Loss in Ductile Cast Iron with Internal Hydrogen, Metallurgical and Materials Transactions A, DOI: 10.1007/s11661-013-2109-9, Vol. 45, pp. 1315-1326, 2013.11, [URL].
60. Hisao MATSUNAGA, Masahiko MAKIZAKI, Keiji YANASE, Finite Element Modeling of Plasticity-induced Crack Closure Due to Occasional Mode II Loading on Mode I Fatigue Crack Growth, Engineering Fracture Mechanics, 111, 38-49, 2013.10, [URL], Plasticity-induced fatigue crack closure associated with occasional mode II loading was simulated for two-dimensional middle-crack tension geometry by using the finite element method. When a single mode II cycle was superposed onto the steady-state mode I crack growth, the range of crack tip opening displacement, ΔCTOD, exhibited the initial drop and subsequent recovery under plane strain condition. On the other hand, under plane stress condition, ΔCTOD exhibited the initial jump and drop right after the single mode II loading, and then it showed the recovery. The present results indicate that occasional mode II loading can cause a small retardation for mode I crack growth due to the enhanced plasticity-induced closure..
61. Yukitaka MURAKAMI, Hisao MATSUNAGA, Arezou ABYAZI, Yoshihiro FUKUSHIMA, Defect Size Dependence on Threshold Stress Intensity for High-strength Steel with Internal Hydrogen, Fatigue & Fracture of Engineering Materials & Structures, 10.1111/ffe.12077, Vol. 36, 850, 2013.09, [URL].
62. , [URL].
63. Saburo OKAZAKI, Atsushi KUSABA, Hisao MATSUNAGA, Masahiro ENDO, Investigation for small shear-mode fatigue cracks in bearing steels, Materials Science Forum, 10.4028/www.scientific.net/MSF.750.264, 750, 236-239, 2013.02.
64. Masahiko MAKIZAKI, Hisao MATSUNAGA, Keiji YANASE, Masahiro ENDO, Effect of Occasional Shear Loading on Fatigue Crack Growth in 7075 Aluminum Alloy, Materials Science Forum, 10.4028/www.scientific.net/MSF.750.264, 750, 264-267, 2013.02, Effect of occasional mode II loading on subsequent mode I fatigue crack growth behavior was investigated by using a thin-walled tube made of 7075-T6511 aluminum alloy. Careful observation of crack growth behavior revealed that the occasional mode II loading has two contradictory effects for crack growth behavior. The first is a retardation effect that is associated with the plastic deformation near crack tip. However, this effect is negligibly small for the crack growth life as a whole. The second is an acceleration effect caused by mode II fatigue crack growth itself. It was found that under relatively high ΔK level, the mode II crack growth was about an order magnitude faster than mode I crack growth. Therefore, to properly evaluate the effect of occasional shear loading in the 7075 alloy, the mode II crack growth should be taken into account..
65. Teruki USUDA, Kenshin MATSUNO, Hisao MATSUNAGA, Keiji YANASE, Masahiro ENDO, Hydrogen-induced Ductility Loss in Cast Irons, Materials Science Forum, 10.4028/www.scientific.net/MSF.750.264, 750, 260-263, 2013.02.
66. K.Matsuno, H.Matsunaga, M.Endo, and K.Yanase, Effect of hydrogen on uniaxial tensile behaviors of a ductile cast iron, International Journal of Modern Physics: Conference Series, 10.1142/S2010194512003522, 6, 407-412, 2012.06.
67. Toshiya Shingo, Keiji Yanase, Hisao Matsunaga, Masahiro Endo, An Analysis of Fatigue Strength of Notched Components, Advanced Materials Research, 10.4028/www.scientific.net/AMR.275.43, 275, 43-46, 2011.07.
68. Naoya Shomura, Keiji Yanase, Hisao Matsunaga, Masahiro Endo, Effects of Crack Size and Crack Face Interference on Shear Fatigue Crack Growth in a Bearing Steel, Advanced Materials Research, 10.4028/www.scientific.net/AMR.275.15, 275, 15-18, 2011.07.
69. Hisao Matsunaga, Kenshin Matsuno, Katsuya Hayashida, Effect of Hydrogen on Tensile Properties of a Ductile Cast Iron, Proceedings of TMS 2011 Annual Meeting, 2011.03.
70. Hisao MATSUNAGA, Hiroshi NODA, Visualization of Hydrogen Diffusion in a Hydrogen-Enhanced Fatigue Crack Growth in Type 304 Stainless Steel, Metallurgical and Materials Transactions A, 10.1007/s11661-011-0661-8, 42, 2696-2705, 2011.03, [URL].
71. Hisao Matsunaga, Effect of Interference of Crack Faces on Shear-mode Threshold for Small Fatigue Cracks in a Bearing steel, Proceedings of 9th International Conference on Multiaxial Fatigue and Fracture (ICMFF9), 2010.06.
72. Naoya Shomura, Daisuke Koyanagi, Hisao Matsunaga, Masahiro Endo, Interference of Crack Faces and Shear-Mode Fatigue Crack Threshold in a Bearing Steel , Multiscaling of Synthetic and Natural Systems with Self-Adoptive Capability (Proc. of Mesomechanics 2010), 153-156, 2010.06.
73. Hiromasa TAKAHASHI, Shigeaki MORIYAMA, Haruhiko FURUTA, Hisao MATSUNAGA, Yuki SAKAMOTO, Toshihiro KIKUTA, Three Lateral Osteotomy Designs for Bilateral Sagittal Split Osteotomy: Biomechanical Evaluation with Three-dimensional Finite Element Analysis, Head & Face Medicine, 6:4 , 2010.03.
74. Arthur J. McEvily, Hisao Matsunaga, On Fatigue Striations, Scientia Iranica, Transaction B: Mechanical Engineering, 17, pp.75-82, 2010.02.
75. Hisao MATSUNAGA, Naoya SHOMURA, Satoshi MURAMOTO, Masahiro ENDO, Shear Mode Threshold for a Small Fatigue Crack in a Bearing Steel, Fatigue & Fracture of Engineering Materials & Structures, 10.1111/j.1460-2695.2010.01495.x, 34, 72-82, 2010.01, [URL].
76. Katsuya Hayashida, Hisao Matsunaga, Masahiro Endo, Hydrogen Emission in Fatigue Process of Hydrogen-charged Austenitic Stainless Steels, Proceedings of 4th International Conference on Experimental Mechanics 2009 (ICEM2009), doi:10.1117/12.852121, 2009.11.
77. Daisuke Koyanagi, Naoya Shomura, Masahiro Endo, Hisao Matsunaga, Shigeaki Moriyama, Near-threshold Fatigue Behaviors of Small Shear Cracks in Bearing Steel, Proceedings of 4th International Conference on Experimental Mechanics 2009 (ICEM2009), 2009.11.
78. Arthur J. McEvily, Masahiro Endo, Keiji Yamashita, Sotomi Ishihara, Hisao Matsunaga, Fatigue Notch Sensitivity and the Notch Size Effect , International Journal of Fatigue, 30, 12, 2087-2093, 2008.12.
79. Arthur J. McEvily, Takashi Nakamura, Hiroyuki Oguma, Keiji Yamashita, Hisao Matsunaga, Masahiro Endo, On the Mechanism of Very High Cycle Fatigue in Ti–6Al–4V , Scripta Materialia, 59, 1207-1209, 2008.11.
80. Hisao Matsunaga, Satoshi Muramoto, Masahiro Endo, Threshold of Shear-mode Fatigue Crack Growth in Bearing Steel, Proceedings of 17th European Conference on Fracture (ECF17), 2008.09.
81. Satoshi Muramoto, Hisao Matsunaga, Shigeaki Moriyama, Masahiro Endo, Crack Size Dependency of Shear-mode Fatigue Crack Threshold in Bearing Steel, Key Engineering Materials, 10.4028/www.scientific.net/KEM.385-387.449, 385-387, 449-452, 2008.07.
82. A. J. McEvily, M. Endo, S. Cho, J. Kasivitamnuay, H. Matsunaga, Fatigue Striations and Fissures in 2024-T3 Aluminum Alloy, Materials Science Forum, 10.4028/www.scientific.net/MSF.567-568.397, 567-568, 397-400, 2007.12, A study has been made of the striations and fissures developed in the aluminum alloy 2024-T3 during fatigue crack growth. Fissures were found to form on inclined facets. They were uniformly spaced as the result of a shielding process. Striation spacings were in accord with da/dN values at the higher levels of K investigated, but at low K levels striation spacings were larger than the corresponding da/dN values. The percentage of the fracture surface containing striations varied with the K level, ranging from less than 1 % at low K levels to 80 % at higher K levels. The reason for the discrepancy between the spacing of striations and the corresponding da/dN values is discussed..
83. Arthur J. McEvily, Sotomi Ishihara, Masahiro Endo, Hiroshi Sakai, Hisao Matsunaga, On one- and Two-parameter Analyses of Short Fatigue Crack Growth, International Journal of Fatigue, 29, 2237-2245, 2007.12.
84. Hiroshi Noda, Hisao Matsunaga, Hydrogen Emission and Martensitic Transformation in the Vicinity of Fatigue Cracks in Hydrogen-charged Type 304 Stainless Steel, Proceedings of International Conference on Advanced Technology in Experimental Mechanics '07 (ATEM'07), 2007.09.
85. Hiroshi NODA, Hisao MATSUNAGA, Fatigue Crack Growth Acceleration Due to Hydrogen in Type 304 Stainless Steel, Key Engineering Materials, 10.4028/www.scientific.net/KEM.345-346.319, 345-346, 319-322, 2007.09.
86. Daisuke Cho, Hisao Matsunaga, Shear-type Fatigue Crack Growth in SAE52100 Steel, Key Engineering Materials, 10.4028/www.scientific.net/KEM.353-358.287, 353-358, 287-290, 2007.09.
87. Masahiro Endo, Arthur J. McEvily, Hisao Matsunaga, Dietmar Eifler, The Growth of Short Cracks from Defects under Multi-Axial Loaing, Proceedings of the 16th European Conference of Fracture, ECF16, 2006.07.
88. Yukitaka Murakami, Hisao Matsunaga, The effect of hydrogen on fatigue properties of steels used for fuel cell system, International Journal of Fatigue, 28, 1509-1520, 2006.11.
89. Hisao Matsunaga, Daisuke Cho, Satoshi Muramoto, Shear-Mode Fatigue Crack Growth in Bearing Steel, Proceedings of 8th International Conference on Multiaxial Fatigue and Fracture (ICMFF8), 2007.06.
90. Yukitaka Murakami, Junji Nagata, Hisao Matsunaga, Factors Affecting Ultralong Life Fatigue and Design Method for Components, Proceedings of the 9th International Congress on Fatigue, Fatigue 2006, 2006.05.
91. Yukitaka Murakami, Hisao Matsunaga, Effect of Hydrogen on High Cycle Fatigue Properties of Stainless Steels Used for Fuel Cell System, Proceedings of the 3rd International Conference on Very High Cycle Fatigue (VHCF-3), 322-333, 2004.09.
92. Hisao MATSUNAGA, Yukitaka MURAKAMI, Masanobu KUBOTA, Joon-Hyun LEE, Fatigue Strength of Ti-6Al-4V Alloys Containing Small Artificial Defects, Materials Science Research International, 9, 4, 263-269, Vol.9, No.4, pp.263-269, 2003.12.
93. Effect of FOD on Fatigue Strength of Ti-6Al-4V Alloy.
94. Hisao MATSUNAGA, Ryuichi EZAKI and Yukitaka MURAKAMI, THE EFFECT OF HYDROGEN ON THE HIGH CYCLE FATIGUE STRENGTH OF TI-6AL-4V, The Eighth International Fatigue Congress, Fatigue 2002, Vol.4, pp.2525-2532, 2002.06.
95. Hisao Matsunaga, Owe Mårs, Bengt Johannesson, Yukitaka Murakami, Statistical Distribution of Powder Sizes and Fatigue Strength of Powder Metal, Proceedings of The Seventh International Fatigue Congress, Fatigue ’99, 3/4, 1817-1822, 1999.06.
96. Hisao Matsunaga, Yukitaka Murakami, Effect of Small Defects on Fatigue Strength of Ti-6Al-4V Alloy, APCFS & ATEM'01, Vol.1, pp366-371, 2001.10.