Fatigue Strength and Fracture Mechanisms of Porous Ceramics(<Special Issue>Reliability Engineering in Materials and Structures)
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概要
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Static and cyclic fatigue strength in porous SiC and Cordierite ceramics were evaluated using quasi-static and cyclic tests, i. e. applied force, P, increasing and applied force range, ΔP, increasing tests, respectively. The evaluation method used Weibull distribution, in which the fracture parameters are stress at failure, σ_f, for quasi-static loading and maximum stress at failure, σ_<max, f>, for cyclic loading. The results revealed that the static fatigue behavior had an important role on the degradation of fracture strength and that cyclic component of loading do not influence on the fracture strength. Statistical characteristics of the fatigue strength were expressed by P-S-N curve estimated by the results of ΔP-increasing tests. During the fatigue experiments, crack nucleation was detected using acoustic emission (AE), and the fracture surfaces were observed by SEM. Based on these results, fracture mechanisms of the porous SiC and Cordierite ceramics were controlled by particle binders, and the binder fractures have a great variety of magnitude.
- 社団法人日本材料学会の論文
- 2002-09-15
著者
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Yonezu Akio
Aoyama Gakuin University:(present Address)canon Inc.
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Yonezu Akio
Graduate Student Aoyama Gakuin University
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OGAWA Takeshi
Department of Mechanical Engineering, Aoyama Gakuin University
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KAWAMOTO Hiroshi
Research and Development Laboratory, Japan Fine Ceramics Center
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Ogawa Takeshi
Department Of Internal Medicine Institute Of Clinical Medicine The University Of Tsukuba
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Ogawa Takeshi
Department Of Mechanical Engineering Aoyama Gakuin University
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Ogawa Takeshi
Departmen Of Orthopaedic Surgery Nihon University School Of Medicine
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Kawamoto Hiroshi
Research And Development Laboratory Japan Fine Ceramics Center
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