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Monitoring Technique using Acoustic Emission and Microseismic Event  

Cheon, Dae-Sung (한국지질자원연구원)
Jung, Yong-Bok (한국지질자원연구원)
Park, Chul-Whan (한국지질자원연구원)
Synn, Joong-Ho (한국지질자원연구원)
Park, Eui-Seob (한국지질자원연구원)
Publication Information
Tunnel and Underground Space / v.18, no.1, 2008 , pp. 1-9 More about this Journal
Abstract
Acoustic emission (AE) and Microseimsic (MS) activities are law-energy seismic events associated with a sudden inelastic deformation such as the sudden movement of existing fractures, the generation of new fractures or the propagation of fractures. These events rapidly increase before major failure and happen within a given rock volume and radiate detectable seismic waves. The main difference between AE and MS signals is that the seismic motion frequencies of AE signals are higher than those of MS signals. As the failure of geotechnical structures usually happens as a high velocity and small displacement, it is nat easy ta determine the precursor and initiation stress level of failure in displacement detection method. To overcame this problem, AE/MS techniques far detection of structure failure and damage have recently adapt in civil engineering. This study deal with the basic theory of AE/MS and state of arts in monitoring technique using AE/MS.
Keywords
Acoustic emission; Microseismic; Precursor; Manitoring technique;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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