Acoustic emission for monitoring a reinforced concrete beam subject to four-point-bending

被引：82

作者：

Schechinger, Barbara ^{[1
]}

Vogel, Thomas ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Inst Struct Engn, CH-8093 Zurich, Switzerland

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2007年 / 21卷 / 03期

关键词：

acoustic emission; damage localisation; elastic wave propagation; source localisation; localisation accuracy; picking;

D O I：

10.1016/j.conbuildmat.2006.04.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Acoustic emission (AE) analysis is applied to monitor the deterioration progress of a reinforced concrete beam under loading in a laboratory test. Accuracy of AE locations is discussed. Picking of signal onsets was done using an automatic routine that showed reliable results compared to manually set picks. Elastic wave propagation was numerically modeled to quantify perturbations by a grouted or ungrouted tendon. In the experiments, temporal and spatial occurrence of AE correlates with macroscopically observed deterioration progress. The location capability decreases when cracking of the concrete occurs. Location results then may not represent all ongoing deterioration processes. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：483 / 490

页数：8

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