Considerations of the Small-Crack Growth Law Based on COD : Low-Cycle Bending Fatigue Test of an Annealed 0.45%C Steel in the SEM
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概要
- 論文の詳細を見る
Low-cycle bending fatigue tests were carried out on annealed 0.45% C steel specimens with a blind hole inside a SEM. ΔCOD was measured from SEM photographs. The small-crack growth law was discussed based on the ΔCOD. The main results obtained were as follows : ( 1 ) When strain level is constant, the shapes of the rims of cracks are geometrically similar to each other and the crack opening ratio U is nearly constant. ( 2 ) When the dl/dN's in several specimens are equal, the ΔCOD's near the crack tip are also nearly equal. ( 3 ) The phenomena mentioned above support the small-crack growth law dl/dN∝l.
- 一般社団法人日本機械学会の論文
- 1990-04-15
著者
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ODA Yasuji
Faculty of Engineering, Kyushu University
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Nisitani Hironobu
Faculty of Engineering, Kyushu University
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Oda Yasuji
Faculty Of Engineering Kyushu University
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Yakushiji Terutoshi
Kobe Steel Ltd.
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Nisitani Hironobu
Faculty Of Engineering Kyushu University
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