Study on the J-integral of Shallow Interfacial Cracks in Ceramics-Metal Joint(Mechanics, Strength & Structural Design)
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概要
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In this paper, the J-integral of shallow interfacial cracks in the Ceramics-Metal joint for plane problems was numerically studied using the finite element method. The effects of crack length, modulus of elasticity and stress condition on the J-integral of shallow interfacial cracks in the heterogeneous cracked body were discussed in detail. Conclusions show that the J-integral of shallow interfacial crack in Ceramics-Metal joint increases rapidly compared with that in homogeneous body as the crack length becomes small. There exists a critical crack length (a/W)_c below which the dimensionless parameter J changes strongly. The critical crack length (a/W)_c increases with the increase of material parameter E_c/E_M. The possibilities of existing shallow cracks near the interface and crack propagation are discussed in detail.
- 大阪大学の論文
著者
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UEDA Yukio
Osaka University
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MURAKAWA Hidekazu
Osaka University
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Zhang Jianxun
Xian Jiaotong University
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ZHANG Jinqiu
Osaka University
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Zhang J
Xi'an Jiaotong Univ.
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