Different R-Curves for Two- and Three-Dimensional Cracks

被引：0
|
作者：
Theo Fett
Stefan Fünfschilling
Michael J. Hoffmann
Rainer Oberacker
机构：
[1] Universität Karlsruhe,
[2] Institut für Keramik im Maschinenbau,undefined
来源：
International Journal of Fracture | 2008年 / 153卷
关键词：
Bridging stresses; circular crack; edge crack; R-curve;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
R-curves caused by crack face interactions are important for the strength assessment of components with small cracks. Whereas an influence of the initial crack length on the R-curve is well understood on the basis of fracture mechanics, it will be shown here that also the type of the crack affects the crack growth resistance. For a given crack-bridging relation it can be shown that 3-dimensional cracks as circular internal cracks and semi-circular surface cracks must exhibit a lower R-curve than obtainable from 2-dimensional edge cracks.
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页码：153 / 159
页数：6
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