The effect of mechanical loading on the photoacoustic response from radial cracks in Vickers-indented Al2O3-SiC-TiC ceramics

被引：0
作者：
K. L. Muratikov
A. L. Glazov
D. N. Rose
D. E. Dumar
机构：
[1] Russian Academy of Sciences,Ioffe Physicotechnical Institute
来源：
Technical Physics Letters | 2002年 / 28卷
关键词：
Microscopy; Stress Intensity; Scanning Laser; Mechanical Stress; Mechanical Loading;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The Vickers indentation zones in Al2O3-SiC-TiC ceramics were studied by scanning laser photoacoustic microscopy. It is shown that the method of photoacoustic microscopy with a piezoelectric detector is sensitive to external mechanical stresses. Variation of the photoacoustic response signal under the action of normal and tangent stresses in the vicinity of radial cracks was determined. The photoacoustic data can be used to estimate the stress intensity coefficients at the crack end.
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页码：377 / 381
页数：4
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