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Threshold intensity factors as lower boundaries for crack propagation in ceramics

http://www.firstlight.cn2010/3/1

[作者] Rudolf Marx Franz Jungwirth Per-Ole Walter

[单位] Department of Prosthetic Dentistry, Section of Dental Materials, University Hospital of the University of Technology

[摘要] The intention of the present paper is to stress the point that the threshold stress intensity factor represents a more intrinsic property for a given ceramic material than the widely used toughness (bend streng…

[关键词] Threshold intensity factors lower boundaries crack propagation ceramics

The intention of the present paper is to stress the point that the threshold stress intensity factor represents a more intrinsic property for a given ceramic material than the widely used toughness (bend strength or fracture toughness), which refers only to fast crack growth. Considering two ceramics with identical threshold limits, although with different critical stress intensity limits, means that both ceramics have identical starting points for slow crack growth. Fast catastrophic crack growth leading to spontaneous fatigue, however, is different. This growth starts later in those ceramic materials that have larger critical stress intensity factors.

存档附件原文地址

原文发布时间:2004/11/17

引用本文:

Rudolf Marx;Franz Jungwirth;Per-Ole Walter.Threshold intensity factors as lower boundaries for crack propagation in ceramicshttp://igsnrr.firstlight.cn/View.aspx?infoid=903317&cb=wangzhijuanxg
发布时间:2004/11/17.检索时间:2024/12/14

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