Application of thermal wave techniques for characterization of ceramics

被引：0
|
作者：
Netzelmann, U [1 ]
Zhang, HJ [1 ]
机构：
[1] Fraunhofer Inst Zerstorungsfreie Prufverfahren, D-66123 Saarbrucken, Germany
来源：
TECHNISCHES MESSEN | 1998年 / 65卷 / 05期
关键词：
D O I：
暂无
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Application of thermal wave techniques on ceramics using photothermal and photoacoustic effects is described. Cracks and inclusions in zirconia titanium carbide and in green as well as in sintered aluminium oxide are detected with a lateral resolution of a few microns. Non-linear effects lean to contrast enhancement, when perpendicular cracks are detected. Frequency dependent measurements allow to determine the depth of horizontal cracks and to measure the thickness of zirconia coatings. Delaminations of tungsten carbide coatings and thickness variations of silicon carbide coatings appear in measured images.
引用
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页码：192 / 196
页数：5
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