Localization of acoustic emission sources in structural health monitoring of masonry bridge

被引：107

作者：

Han, Qinghua ^{[1
]}

Xu, Jie ^{[1
]}

Carpinteri, Alberto ^{[2
]}

Lacidogna, Giuseppe ^{[2
]}

机构：

[1] Tianjin Univ, Minist Educ, Sch Civil Engn, Key Lab Coast Civil Struct Safety, Tianjin 300072, Peoples R China

[2] Politecn Torino, Dept Struct Geotech & Bldg Construct, Turin, Italy

来源：

STRUCTURAL CONTROL & HEALTH MONITORING | 2015年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

acoustic emission; source localization method; masonry bridge; propagation delay; degree of inhomogeneity; CONCRETE STRUCTURES; COMPOSITE PANEL; SOURCE LOCATION; DAMAGE; BEHAVIOR;

D O I：

10.1002/stc.1675

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The application of the acoustic emission (AE) technique to monitoring the crack characterization in masonry structures is investigated in this paper. An improved approach, modified from the classical crack source localization method, is proposed to provide more reliable crack locations in masonry structures. The introduced parameter, degree of inhomogeneity in the modified method, can help to decrease the unavoidable propagation delay related to refraction due to the layers in masonry material. The modified method is successfully applied to the AE source detection during the pencil-lead break test and the central pier settlement test of a masonry model bridge to analyze the crack pattern. It is shown that the proposed method is a reliable tool for crack source location in masonry structures. Copyright (c) 2014 John Wiley & Sons, Ltd.

引用

页码：314 / 329

页数：16

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