Development of acoustic emission monitoring system for the safety of geotechnical structures

The monitoring method of geotechnical structures using acoustic emission(AE) and microseismicity(MS) isto detect the microscopic deformation and fracture behavior in the inner structures by measuring induced acoustics andvibrations. It can identify a pre-indication of failure by taking advantage of the characteristics that the amount and occurrencerates of AE and MS increase rapidly prior to large scale destruction of the target structures. The monitoring system consistingof high-quality sensors, high-speed data acquisition device and the operation program is required for the practical applicationof this method. Recently, the AE and MS monitoring systems have been localized. In particular, the developed operationsoftware which can analyze and interpret the measured signals was demonstrated through a number of applications todomestic fields. This report introduces the configuration and features of developed monitoring system, then the challengesand future direction of AE monitoring in geotechnical structures are discussed.

keywords: 미소파괴음, 미소진동, 계측, 운영프로그램, 조기경보, Acoustic emission, Microseismic, Monitoring, Operation software, Early warning

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Article Contents

Vol.16 No.5

Development of acoustic emission monitoring system for the safety of geotechnical structures

Abstract

Reference

(사)한국터널지하공간학회