Method for measuring short-crack R-curves without calibration parameters: Case studies on alumina and alumina aluminum composites

被引：40

作者：

Stech, M ^{[1
]}

Rodel, J ^{[1
]}

机构：

[1] TH DARMSTADT,FACHGEBIET NICHTMET ANORGAN WERKSTOFFE,D-64295 DARMSTADT,GERMANY

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1996年 / 79卷 / 02期

关键词：

D O I：

10.1111/j.1151-2916.1996.tb08119.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A method to measure short-crack R-curves is introduced which does not require an independent determination of calibration factors and which utilizes an equilibrium crack shape condition to compute the shape factor of a surface crack. R-curves of an alumina with two different grain sizes and of an aluminum/alumina composite were measured in the crack length regime of below 100 mu m up to almost 1000 mu m. Calculated and experimentally obtained crack depth profiles were in good agreement with deviations being between -22% and +26% for the crack ellipticity and confirmed the reliability of the method.

引用

页码：291 / 297

页数：7

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