Acoustic Emission Location Method for Quasi-Cylindrical Structure With Complex Hole

被引：14

作者：

Xiao, Pan ^{[1
]}

Hu, Qingchun ^{[2
]}

Tao, Qing ^{[2
]}

Dong, Longjun ^{[2
]}

Yang, Zhanfeng ^{[1
]}

Zhang, Weibin ^{[1
]}

机构：

[1] China Acad Engn Phys, Inst Chem Mat, Mianyang 621000, Sichuan, Peoples R China

[2] Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China

来源：

IEEE ACCESS | 2020年 / 8卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Acoustic emission (AE); lead-breaking test; node block location method (NBLM); source localization; AE; LOCALIZATION;

D O I：

10.1109/ACCESS.2020.2972411

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

As an effective structure health monitoring technology, acoustic emission (AE) has been developed rapidly in various fields over recent years. AE source localization is the core element of AE technology. In this paper, a Node Block Location Method (NBLM) based on the collaborative model of node and block matrix was proposed to meet the high-precision requirement of source localization in the quasi-cylindrical structure with complex hole. NBLM can not only bypass the empty area, but also fit the actual propagation of elastic waves better in the complex boundaries. In order to evaluate the effectiveness of NBLM, lead-breaking tests were carried out on two cylindrical structure: one with square hole and the other with circular hole. The lead-breaking points were used as AE source in the test. The source coordinates were inverted by three separate location methods according to arrivals. Test results verify the superiority of NBLM and show that the location accuracy of the NBLM has been greatly improved compared to the existing methods.

引用

页码：35263 / 35275

页数：13

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