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Acoustic emission monitoring of damage evaluation in ceramics submitted to thermal shock

✍ Scribed by F. Mignard; C. Olagnon; G. Fantozzi


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
485 KB
Volume
15
Category
Article
ISSN
0955-2219

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✦ Synopsis


In studies conducted on two ceramic materials, namely a porous alumina and a dense zivconia, it is shown that a simple acoustic emission experiment can provide valuable information on the processes of thermal shock degradation in the materials.


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Contact damage submitted to thermal shoc
✍ F. Osterstock πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 652 KB

A criterion for study of the thermal shock resistance of brittle materials is derived. It makes use of the stable extension stage of Vickers indentation cracks under the action of the thermal transient stress which appears during quenching. During this stage, the relative increase in crack length ca