Fatigue Crack Growth Laws in Small and Large Cracks and Their Physical Background
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概要
- 論文の詳細を見る
A small crack shows anonalous growth behavior in comparison with a large crack. In both large and small cracks, however, the fundamental factor controlling the crack growth rate is the cyclic displacement near the crack tip. In the present review, two fatigue crack growth laws in small and large cracks, dl/dN∝σ^n_al and dl/dN∝ΔK^m, which formally contradict each other unless m=n=2, were explained consistently using the assumption dl/dN ∝r_<prev>. Moreover, the validity and the limitation for application of the small-crack growth law were explained by experimental results and the practical prediction method for fatigue life was suggested.
- 一般社団法人日本機械学会の論文
- 1992-01-15
著者
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Kawagoishi Norio
Faculty Of Engineering Kagoshima University
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NISHITANI Hironobu
Faculty of Engineering, Kyushu University
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Nishitani H
Kyushu Sangyo Univ. Fukuoka Jpn
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Nishitani Hironobu
Faculty Of Engineering Kyushu University
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