Prediction of Fracture during Sintering of Ceramic Powder Compact
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概要
- 論文の詳細を見る
A criterion for predicting fracture initiation due to nonuniform shrinkage during sintering of ceramic powder compacts is proposed. In the present criterion, the occurrence of sintering fracture is determined using the difference of volumetric strain between nonuniform and uniform shrinkages because stress is induced by the difference of volumetric strain during sintering. The material constants in the criterion are determined by means of a sintering test using ringed compacts under a condition of restricted shrinkage. Nonuniform shrinkage behavior due to the density distribution during sintering of circular plates and rings with a boss is simulated by the viscoplastic finite element method and the occurrence of sintering fracture is predicted using the criterion from the calculated results. The predicted fracture rates and sites of the sintered products are in good agreement with the experimental results for alumina compacts.
- 一般社団法人日本機械学会の論文
- 1997-06-15
著者
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Osakada Kozo
Department Of Mechanical Engineering Faculty Of Engineering Science Osaka University
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MORI Ken-ichiro
Department of Mechanical Engineering, Faculty of Engineering Science, Osaka University
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MIYAZAKI Masahide
Graduate Student of Osaka University
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Mori Ken-ichiro
Department Of Mechanical Engineering Faculty Of Engineering Science Osaka University
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