Acoustic Emission Characteristics of Different Areas in the Fracture Process of Perforated Granite

被引：0
作者：
Gao X. [1 ]
Liu S.-J. [1 ]
Huang J.-W. [1 ]
机构：
[1] School of Resources & Civil Engineering, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2018年 / 39卷 / 11期
关键词：
Acoustic emission(AE); Biaxial loading; Fracture form; Multi-channel; Perforated granite;
D O I：
10.12068/j.issn.1005-3026.2018.11.026
中图分类号：
学科分类号：
摘要：
The monitoring area of acoustic emission(AE)probes was partitioned by means of the blocking effect of hole on AE propagation. Based on the multi-channel AE monitoring experiment on perforated granite specimen under biaxial loading, the AE characteristics of different areas of specimens in failure process and its relationship with the failure mode were studied. The results show that AE sensors monitoring area of the specimens can be divided into three kinds, the single monitoring zone, the joint monitoring zone, and the blind monitoring zone. There are two kinds of fracture forms, the "V" type and the penetration type. For the specimens with V-type fracture, the main ruptures occur in the single monitoring zone and the AE characteristics of each channel are significantly different. For the specimens with penetration type fracture, the main ruptures happe in the joint monitoring zone and the AE characteristics of each channel are similar. © 2018, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：1653 / 1657
页数：4
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