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Hypersensitivity of strain-based indicators for structural damage identification: A review

机译：基于应变的指标对结构损伤识别的超敏性：综述

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摘要

Because of the sensitive characteristic to local defects, strain has been widely utilized to identify the presence, location, and severity of damage in structures, and this paper reviews recent publications regarding strain-related techniques on structural damage identification. A brief description on the strain-displacement relationship at defective areas is first presented. Then, damage identification using various strain-related parameters, such as strain (curvature) mode shape, strain energy, strain frequency response function, etc., is explored and the hypersensitivity of corresponding damage indicators will be examined systematically. Finally, some generalized criteria on the selection of strain-based parameters for damage identification are concluded and suggestions for future work are discussed.
机译：由于对局部缺陷的敏感特性，应变已被广泛用于识别结构中损伤的存在，位置和严重性，因此本文回顾了有关结构损伤识别中与应变相关技术的最新出版物。首先简要介绍缺陷区域的应变-位移关系。然后，探索使用各种应变相关参数进行损伤识别，例如应变（曲率）模式形状，应变能，应变频率响应函数等，并系统地检查相应损伤指标的超敏性。最后，总结了一些基于应变的参数用于损伤识别的通用准则，并对今后的工作提出了建议。

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