Crackling noise during failure of alumina under compression: the effect of porosity

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Crackling noise during failure of alumina under compression: the effect of porosity.

We study acoustic emission avalanches during the process of failure of porous alumina samples (Al2O3) under compression. Specimens with different porosities ranging from 30% to 59% have been synthesized from a mixture of fine-grained alumina and graphite. The compressive strength as well as the characteristics of the acoustic activity have been determined. The statistical analysis of the record...

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ژورنال

عنوان ژورنال: Journal of Physics: Condensed Matter

سال: 2013

ISSN: 0953-8984,1361-648X

DOI: 10.1088/0953-8984/25/29/292202