109 セラミックス中の粗大欠陥の定量評価とその強度信頼性に及ぼす影響(セラミックス/セラミックス基複合材料(2),ものづくりにおける基礎研究と先端技術の融合)

概要

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Strength variation of alumina ceramics formed by dry-pressing of granules was examined by the number density of coarser defects. In simulation, the Weibull modulus m was related to the exponent n of the power function of the number density of coarser defects; m = 1.8n - 1.9. Average strength was also related to parameters A and n. The number density of coarser defects in alumina ceramics was measured by the direct observation of the thinned sample using the optical microscopy. The coarser defects density was expressed by the power functions. The Weibull modulus and strength of alumina samples were coincident well with the simulated data.
一般社団法人日本機械学会の論文
2010-11-27