Kyushu University Academic Staff Educational and Research Activities Database
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Takakuwa Osamu Last modified date:2018.08.02

Graduate School
Undergraduate School
Other Organization

Academic Degree
Ph.D. in Eng.
Field of Specialization
Strength and fracture of materials, Surface modification
Research Interests
  • Strength properties of metals in high pressure gaseous hydrogen environment
    keyword : Hydrogen energy society, hydrogen embrittlement, Crack propagation, Fracture toughness
  • Improvement of fatigue strength by a surface modification
    keyword : Surface modification, Fatigue
Academic Activities
1. Yuhei Ogawa, Domas Birenis, Hisao Matsunaga, Osamu Takakuwa, Annett Thøgersen, Øystein Prytz, Junichiro Yamabe, 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, 733, 316-328, 2018.08.
2. Domas Birenis, Yuhei Ogawa, Hisao Matsunaga, Osamu Takakuwa, Annett Thøgersen, Øystein Prytz, Junichiro Yamabe, Interpretation of hydrogen-assisted fatigue crack propagation in BCC iron based on dislocation structure evolution around the crack wake, Acta Materialia, 156, 245-253, 2018.07.
3. 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, 154, 101-105, 2018.05.
4. 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, 48, 11, 5717-5732, 2017.11.
5. Yuhei Ogawa, Domas Birenis, Annett Thøgersen, Øystein Prytz, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Multi-scale observation of hydrogen-induced, localized plastic deformation in fatigue-crack propagation in a pure iron, Scripta Materialia, 140, 13-17, 2017.07.
6. Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Saburo Matsuoka, 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, 1-14, 2017.06.
7. Junichiro Yamabe, Osamu Takakuwa, Hisao Matsunaga, Hisatake Itoga, Saburo Matsuoka, Hydrogen diffusivity and tensile-ductility loss of solution-treated austenitic stainless steels with external and internal hydrogen, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2017.04.055, 42, 18, 13289-13299, 2017.05.
8. Osamu Takakuwa, Takuya Fujisawa, Hitoshi Soyama, Experimental verification of the hydrogen concentration behavior around a crack tip using a spot X-ray diffraction, International Journal of Hydrogen Energy, 41, 23188-23195, 2016.11.
9. Osamu Takakuwa, Fumio Takeo, Mitsuru Sato, Hitoshi Soyama, Using cavitation peening to enhance the fatigue strength of duralumin plate containing a hole with rounded edges, Surface & Coatings Technology, 10.1016/j.surfcoat.2016.08.087, 307, 200-205, 2016.12.
10. Osamu Takakuwa, Masaaki Nakai, Kengo Narita, Mitsuo Niinomi, Kazuhiro Hasegawa, Hitoshi Soyama, Enhancing the durability of spinal implant fixture applications made of Ti-6Al-4V ELI by means of cavitation peening, International Journal of Fatigue, 10.1016/j.ijfatigue.2016.07.021, 92, 360-367, 2016.11.
Membership in Academic Society
  • The Society of Materials Science, Japan
  • The Iron and Steel Institute of Japan
  • The Japan Society of Mechanical Engineers