Probability density field of acoustic emission events: Damage identification in concrete structures

被引：14

作者：

Zhang, Fengqiao ^{[1
]}

Yang, Yuguang ^{[1
]}

Naaktgeboren, Marius ^{[2
]}

Hendriks, Max A. N. ^{[1
,3
]}

机构：

[1] Delft Univ Technol, Dept Engn Struct, NL-2628 CN Delft, Netherlands

[2] Minist Infrastruct & Water Management, Rijkswaterstaat, NL-3526 LA Utrecht, Netherlands

[3] Norwegian Univ Sci & Technol, Dept Struct Engn, N-7491 Trondheim, Norway

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 327卷

关键词：

Probability density function; Acoustic emission source localization; Source localization error; Acoustic emission event density; Damage identification; Concrete structures; CRACK DETECTION; NDE TECHNIQUES; MEMBERS; RECOMMENDATION;

D O I：

10.1016/j.conbuildmat.2022.126984

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper proposes a new damage identification method, namely, the probability density field of acoustic emission (AE) events. This new method provides a different perspective to deal with the uncertainties in the source localization process. We treat the source location as a random variable, and estimate its probability density field based on a probability density function. The function was found from simulations where various uncertainties were included. The probability of AE events falling in a certain space range is the integral of the probability densities over that range. We apply the new method in a failure test of a full-scale reinforced concrete beam. The resultant probability density field clearly reflects the crack patterns of the specimen and a close relationship with the crack width.

引用

页数：10

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