Service Load and Fatigue Strength : Report 13,The Effects of One Superposed Impulsive Load on the Fatigue Crack Propagation and the Final Fracture under Constant Stress Amplitude
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概要
- 論文の詳細を見る
Using V-notched specimens of 0.36% carbon annealed steel, the effects of one impulsive load on the crack propagation and the final fracture are examined and the following results are obtained. (1) Only one impulsive load also affects the subsequent crack propagation and the final fracture and the fatigue lives are shortened. This phenomenon is more remarkable when the impulsive load is imposed during the crack propagation process and in one case fatigue life decreases to 20% of the original fatigue life. (2) There is a critical crack depth above which the effects of the impulsive load are more severe. This depth seems to correspond to the non-propagating crack depth. (3) The parallel law of crack propagation is applicable to the present results and even in the worst case results are situated in the safety range of the expected values.
- 一般社団法人日本機械学会の論文
著者
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KUNIO Takeshi
Faculty of Engineering, Keio University.
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Kunio Takeshi
Faculty Of Engineering Keio University
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HAGIWARA Yoshihiko
Faculty of Engineering, Keio University
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NAKAMURA Hiroshi
Technical Research Institute, Kawasaki Heavy Industry Ltd.
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MURAKI Makoto
IE sec. Nippon Kokan K. K. Fukuyama Iron Works.
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SHIMADA Shosaku
Kubota iron & Machinery Works Ltd.
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AOKI Itsuro
Electric Utility & Industrial Division, Hitachi Ltd.
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AOKI Itsuro
Faculty of Engineering, Keio University.
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Nakamura Hiroshi
Ship Department Of Technical Research Laboratory Kawasaki Dockyard Co. Ltd.
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Aoki Itsuro
Faculty Of Engineering Keio University.
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Shimada Shosaku
Kubota Iron & Machinery Works Ltd.
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Hagiwara Yoshihiko
Faculty Of Engineering Keie University
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