Kyushu University Academic Staff Educational and Research Activities Database
List of Presentations
Shigeru Hamada Last modified date:2018.03.24

Associate Professor / Strength of Materials / Department of Mechanical Engineering / Faculty of Engineering


Presentations
1. Fatigue life properties of austenitic stainless steel weld metals in high-pressure hydrogen gas.
2. Case Study on Cooling Pipe of Pre-cooler Used for Verification Test of 70 MPa Hydrogen Station.
3. Test method for threshold of hydrogen-induced crack growth KI,H of SCM435 in 115 MPa hydrogen gas.
4. Punching process effects on fatigue strength properties.
5. Relationship between hardness and fatigue limit focusing attention on the plastic strain similarity between indentation and fatigue crack growth.
6. Effect of Hydrogen on SSRT Properties of 304/308 Weld Metal.
7. Shuto FUKUDOME, Shigeru HAMADA, Masaharu UEDA, Hiroshi NOGUCHI, Shear mode crack propagation along with plastic flow of small area, 12th International Conference on the Mechanical Behavior of Materials (ICM12), 2015.05.
8. Junichiro YAMABE, 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, 2014 ASME Pressure Vessels & Piping Conference, 2014.07.
9. Hisao MATSUNAGA, Michio YOSHIKAWA, Hisatake ITOGA, Junichiro YAMABE, Shigeru HAMADA, Saburo MATSUOKA, Tensile- and fatigue-properties of low alloy steel JIS-SCM435 and carbon steel JIS-SM490B in 115 MPa hydrogen gas, 2014 ASME Pressure Vessels & Piping Conference, 2014.07.
10. Toshiyuki Ishina, Shigeru Hamada, Hiroshi Noguchi, Derivation of Non-dimensional Number for Elastic-perfectly Plastic Continuum Body and Elastic-perfectly Plastic Solid Materials in Linear Elastic Fracture Mechanics, The 20th European Conference on Fracture, 2014.07.
11. Effect of the Defect Shape on the Fatigue Crack Non-Propagation behavior Using Quenched and Tempered 0.45% Carbon Steel.
12. Fatigue Limit Prediction Method for a Material with an Arbitrary Shaped Flaw and Verification Using 5056 Aluminum Alloy.
13. Proposal of New Constitutive Equation for Realizing Hydrogen-Enhanced-Localized-Plasticity and It’s Application to Hydrogen Embrittlement Mechanism.
14. Shigeru Hamada, Minjian Liu, Measurement of effective stress intensity factor range of mode II fatigue crack growth using
hysteresis loop, 13th International Conference on Fracture, 2013.06, A method was proposed for measuring the effective stress intensity factor ranges of Mode II fatigue crack growth by using the hysteresis loop for a specimen's surface strain. Many cases of rolling contact fatigue failure, such as those that occur in railway rails, bearings and gears are due to repeated high shear loads. In order to prevent such fatigue failures, the resistance of a material to repeated high shear loads must be determined. The fatigue crack growth characteristics are dependent on the Mode II stress intensity factor range. However, conventionally measured Mode II fatigue crack growth characteristics vary according to the measurement methods. Therefore, the authors improved the experimental measurement method proposed by Murakami, and proposed a way to measure the Mode II effective stress intensity factor range. Improvements to the jigs and specimen were made based on the ideal mechanical model of the experimental method. Furthermore, to measure the Mode II fatigue crack growth behavior, strain gauges were applied to the specimen and the hysteresis loop of the strain was measured with high accuracy by using a newly developed subtraction circuit..
15. shigeru hamada, Strength Evaluation for Micro Polycrystalline Silicon Structure and Hermetic Seal of MEMS package, The Sixth KAIST-Kyushu University Joint Workshop on Frontiers in Mechanical and Aerospace Engineering, 2012.09, There are two important points to develop MEMS package from the view point of reliability. The first one is the strength reliability of micro polycrystalline silicon structure, and the second one is bonding strength reliability for hermetic seal. In order to evaluate strength of micron size polycrystalline silicon (poly-Si) structure for MEMS considering surface morphology difference between top and sidewall and effective surface area, bending strength tests of cantilever beam, surface roughness measurement and fracture surface analysis are performed. The specimens are made by CVD process for poly-Si deposition and deep RIE process for sidewall formation, and then the surface morphology of the top and the sidewall surface are different. The various size notches on the specimen are introduced in order to change effective surface area. By the fracture surface analysis, it was found that the fracture initiation point was not always maximum stress point; this is because there exist stress concentration on the surface. Surface roughness was measured using atomic force microscope (AFM). Then the maximum stress concentration of the specimen on the top and the sidewall surface respectively were presumed using extreme statistics, and effective surface area was defined. Then, bending strength and effective surface area shows good correlation. In order to secure the certain operation of MEMS devices, it is very important to design a hermetically sealed package which protects the device from wet environments, taking into account the reliability of cap bonding of MEMS packages. Anodic bonding is a popular cap bonding method. In this process, glass and single crystal silicon are bonded at high temperature under high voltage conditions. In this study, the new production method of device size specimen with an interface crack by wafer process is proposed. And an attempt is made to establish a method of testing the cap bonding strength of packages and to make clear the interface strength of anodic bonding between the glass and single crystal silicon..
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21. Relation between fatigue crack initiation and structure in pearlitic steel.
22. Proposal of evaluation method of fatigue limits in cast non-combustible Mg alloy at high temperature.
23. Strength Evaluation Method in Magnesium Alloy with Defect.
24. Systematization of Analysis Method of Fatigue Crack Initiation Site in Pearlitic Steel Smooth Specimen.
25. The effects of distribution of hardness on fatigue property of precipitation strengthening stainless steel A286.
26. Proposal of evaluation method of fatigue limit with small crack under mean stress, taking non-combustible Mg alloy as an example.
27. Measurement of Effective Stress Intensity Factor Range of Mode II Fatigue Crack Propagation.
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31. Fatigue limit evaluation considering crack initiation for lamellar pearlitic steel, [URL].
32. Proposal of evaluation method of fatigue limits of non-combustible Mg alloy with small crack under mean stress.
33. Fatigue strength evaluation method of lamellar pearlite rail steel, [URL].
34. Proposal of distribution characteristic evaluation method of flaky inclusion (examination by simulation), [URL].
35. Fatigue Characteristics of Lamellar Pearlite Steel Considering Pearlite Block and Colony.
36. Proposal of Distribution Characteristic Evaluation Method of Flaky Inclusion (Examination by Simulation).
37. Strength Evaluation of Polycrystalline Silicon Structure Considering Sidewall Morphology.
38. Hydrogen Exposure Effect on Tensile Strength of High Strength Steel Sharp Notched Specimen.
39. Proposal of Strength Evaluation Method based on Fracture Mechanism in New Mg Casting Alloy.
40. Evaluation of Fracture Strength for Poly-Si in various shape and size.
41. Strength Evaluation Method of Micro Polycrystalline Silicon.
42. Size effect of micro polycrystalline silicon structure with stress concentratio.
43. The effect of hydrogen on tensile strength of high strength steel SCM435 notched specimen.
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46. Fatigue Strength Characteristic of Notched Specimen of Noncombustible Magnesium Alloy, [URL].
47. Fatigue strength characteristics of non-combustible Mg alloy welded joint, [URL].
48. Strength reliability of poly-silicon for MEMS, [URL].
49. Fatigue Strength of Notched Specimen of Non-combustible Magnesium Alloy.
50. Fractography Web Database System (Macroscopic Fatigue Fracture Surface).
51. Strength reliability of micro polycrystalline silicon structure.
52. Prediction of lifetime of solder joints by heat cycle accelerated test.
53. Bonding strength reliability of MEMS packages.
54. Bond strength reliability evaluation for hermetic seal of MEMS package.
55. Development strength reliability of micro-materials for MEMS.
56. Prediction of lifetime of solder joints by heat cycle accelerated test.
57. Stress Concentration and Surface Roughness Effect on Strength of Polycrystalline Silicon Structure.
58. Relationship between strength and surface roughness about micro polycrystalline silicon structure.
59. The fatigue-breaking example of rotating machines.
60. The application and the subject to a real product of a micro material.
61. Strength evaluation of micro-polycrystalline silicon structure.
62. NOTCH EFFECT OF MICRO POLYCRYSTALLINE SILICON CANTILEVER.
63. Notch Effect of Micro Polycrystalline Silicon Structure.
64. Notch Effect of Micro Polycrystalline Silicon Structure.
65. Reliability of BGA SOlder Joints Strength under Mechanical Loading.
66. Notch and size effect of micro scale structure.
67. Fractgraphy analysis of electric devices.
68. The influence of joint shape between solder ball and land on thermal fatigue life of BGA package.
69. The influence of joint shape between solder ball and land on thermal fatigue life of BGA package.
70. Analysis of spot welds by the combination of thermoelastic stress analyzer and FEM.
71. New measurement method of Mode II threshold stress intensity factor range DKIIth and its application.
72. New measurement method of Mode II threshold stress intensity factor range ΔKτth and its application.
73. New measurement method of Mode II threshols stress intensity factor range and its application.