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- HATTORI Nobusuke
- SAGA University
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- NISHIDA Shin-ichi
- SAGA University
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- WANG Sheng-wu
- DALIAN Railway College of China
Bibliographic Information
- Other Title
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- 237 環状切欠き材の疲労強度向上(OS 軽量化・高強度化と材料代替・材料進化)
Abstract
More than 90% of failures of machines and mechanical parts are caused by fatigue. In addition, approximately 90% of the fatigue cracks initiate at a stress concentration part of structural component. Therefore, it is important to improve the fatigue limit of a notched specimen. In this study, the fatigue properties of specimens with circumferential notch have been investigated using Ono-type rotating bending fatigue test machine. The main results obtained in this study are as follows: (1) The fatigue strength of a notched-specimen considerably increases by roller-working. (2) The improvement of fatigue limit by roller-working would be attributed to work-hardening and compressive residual stress. (3) Furthermore, the non-propagating cracks are observed in the specimen subjected to the stress amplitude of fatigue limit by 1 × 10^7 cycles.
Journal
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- The Proceedings of the Materials and processing conference
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The Proceedings of the Materials and processing conference 2001.9 (0), 329-330, 2001
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390001205879114368
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- NII Article ID
- 110002485717
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- ISSN
- 2424287X
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed