首页|Acoustic emission source location method and experimental verification for structures containing unknown empty areas

Acoustic emission source location method and experimental verification for structures containing unknown empty areas

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
  • 维普
Acoustic emission(AE)localization plays an important role in the prediction and control of potential haz-ardous sources in complex structures.However,existing location methods have less discussion on the presence of unknown empty areas.This paper proposes an AE source location method for structures con-taining unknown empty areas(SUEA).Firstly,this method identifies the shape,size,and location of empty areas in the unknown region by exciting the active AE sources and using the collected AE arrivals.Then,the unknown AE source can be located considering the identified empty areas.The lead break experiments were performed to verify the effectiveness and accuracy of the proposed method.Five spec-imens were selected containing empty areas with different positions,shapes,and sizes.Results show the average location accuracy of the SUEA increased by 78％compared to the results of the existing method.It can provide a more accurate solution for locating AE sources in complex structures containing unknown empty areas such as tunnels,bridges,railroads,and caves in practical engineering.

Acoustic emissionSource locationEmpty area identification

Longjun Dong、Qing Tao、Qingchun Hu、Sijia Deng、Yongchao Chen、Qiaomu Luo、Xihong Zhang

展开 >

School of Resources and Safety Engineering,Central South University,Changsha 410083,China

School of Civil and Mechanical Engineering,Curtin University,Perth 6102,Australia

financial support from the National Science Foundation for Excellent Young Scholars of ChinaNatural Science Foundation of ChinaSpecial Fund for Basic Scientific Research Operations in Univer-sitiesFundamental Research Funds for the Central Universities of Central South University

51822407517743272282020cxqd0552021zzts0875

2022

矿业科学技术学报(英文版)
中国矿业大学

矿业科学技术学报(英文版)

CSTPCDCSCDSCIEI
影响因子：1.222
ISSN：2095-2686
年,卷(期)：2022.32(3)
  • 4
  • 9