The Proceedings of the Materials and processing conference
Online ISSN : 2424-287X
2010.18
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109 Evaluation of coarser defects in ceramic materials and their influence on average strength and reliability
Satoshi TANAKAShouta GOIRyoichi FURUSHIMAKeizo UEMATSU
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CONFERENCE PROCEEDINGS FREE ACCESS

Pages _109-1_-_109-3_

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Abstract
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.
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© 2010 The Japan Society of Mechanical Engineers
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