2016 Fiscal Year Final Research Report
Study on fatigue strength evaluation technique under high-strain rate
| Project/Area Number |
26820016
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
Naoe Takashi 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J－PARCセンター, 研究副主幹 (00469826)
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| Research Collaborator |
FUTAKAWA Masatoshi
XIONG Zhihong
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | ギガサイクル疲労 / 超音波疲労 / き裂検出 / 熱弾性効果 |
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| Outline of Final Research Achievements |
As a fundamental study of fatigue durability investigation and its diagnostic technique under high-strain rate and high-cycle loading, we have performed gigacycle fatigue test using an ultrasonic fatigue testing machine to investigate the nondestructive detection technique of fatigue crack initiation and propagation. Fatigue strength of solution-annealed and cold-worked austenitic stainless steel SU316L up to 10＾9 cycles under room temperature and 250 degC were evaluated. Furthermore, the mechanisms of abrupt temperature rise observed in the fatigue test were experimentally and analytically investigated.
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| Free Research Field |
機械材料・材料力学
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