Acoustic emission accumulation stage in compression and impact rupture of granite

被引：0
|
作者：
I. P. Shcherbakov
V. S. Kuksenko
A. E. Chmel’
机构：
[1] Russian Academy of Sciences,A.F. Ioffe Physical
来源：
Journal of Mining Science | 2012年 / 48卷
关键词：
Impact failure; granite; acoustic emission; damage accumulation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Specimens of granite were exposed to uniaxial compression and impacted by a dropped weight in order to obtain time sequences of acoustic emission signals generated due to micro-cracking. Time resolution in the impact fracturing was 10 ns. Both under compression and impact, the macroscale failure stage was preceded by micro-scale damages accumulation stage. The accumulation stage duration under compression is far much longer than the failure stage, while the situation is opposite in case of failure under impact.
引用
收藏
页码：656 / 659
页数：3
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