Lowest Fatigue Limit Estimation of Ductile Cast Iron Joints by Considering Maximum Defect Size Toward Replacing Welded Joints
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- Hidaka Tetsuro
- Research and Development Center, HINODE, Ltd.
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- Noda Nao-Aki
- Dept. of Mechanical and Control Engineering, Kyusyu Institute of Technology
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- Sano Yoshikazu
- Dept. of Mechanical and Control Engineering, Kyusyu Institute of Technology
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- Kai Nobuhiro
- Research and Development Center, HINODE, Ltd.
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- Fujimoto Hiroyoshi
- Research and Development Center, HINODE, Ltd.
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Abstract
<p>In our earlier study, the authors revealed that the fatigue limit of ductile cast iron (DCI) specimens whose shapes are similar to the welded joint shapes is about three times larger than that of the welded joint specimens. However, since many defects are usually included in the DCI specimens, the fatigue limit of DCI joints decreases with increasing the maximum defect size. In this paper, therefore, the maximum defect size is estimated by using statistics of extremes. Then, the lowest fatigue limit corresponding to the maximum defect size is estimated from the 4 parameter model and compared with the lowest fatigue limit of the welded joint. As a result, it was confirmed that the lowest fatigue limit of the DCI specimens is about twice as large as the welded joint.</p>
Journal
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- ISIJ International
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ISIJ International 60 (5), 1006-1015, 2020-05-15
The Iron and Steel Institute of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390566775134702336
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- NII Article ID
- 130007843490
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- NII Book ID
- AA10680712
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- ISSN
- 13475460
- 09151559
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- HANDLE
- 10228/00007837
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed