首页|Fracture Toughness of Whisker Reinforced Ceramics

Fracture Toughness of Whisker Reinforced Ceramics

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  • NETL
  • NSTL
  • Trans Tech Publications Ltd
By use of a probabilistic fracture model, a numerical simulation method for deformation and fracture behavior of whisker reinforced ceramics is developed first. A crack in whisker reinforced ceramics is regarded as the crack with a cohesive stress acting on the crack surface, and then the tension-softening relation is derived on the basis of a micromechanical study. After the numerical simulation method is constructed by incorporating the tension-softening relation in an FEM scheme, we simulate the load-load point displacement relationship for an edge-cracked bend specimen of a SiC whisker/alumina composite. The fracture toughness determined from the simulated maximum load is consistent with that obtained from experiment.

whisker reinforced ceramicsnumerical simulation methodprobabilistic fracture modeltension-softening relationSiC whisker/alumina compositefracture toughness

M. Katagiri、A. Kumaki、Y. Izumi、H. Suzuki、H. Sekine

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Research & Development Center, Taiheiyo Cement Co. Ltd., 2-4-2 Oasku, Sakura, Chiba 285-0802, Japan

Research & Development Laboratory, Taiheiyo Materials Co. Ltd., 2-4-2 Oasku, Sakura, Chiba 285-0802, Japan

Corporate Social Responsibility Department, Taiheiyo Cement Co. Ltd., St.Luke's Tower, 8-1 Akashi-cho, Chuo-ku, Tokyo 104-8518, Japan

Department of Mechanical Engineering, Hachinohe Institute of Technology, 88-1 Obiraki, Myo, Hachinohe, Aomori 031-8501, Japan

Tohoku University, 6-6-01 Aoba-yama, Aoba-ku, Sendai 980-8579, Japan

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2010

10.4028/www.scientific.net/KEM.430.41

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.430
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