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首页> 外文会议>Fourth International Conference on Repair, Rehabilitation, and Maintenance of Concrete Structures, and Innovations in Design and Construction Seoul, Korea, September 2000 >Identification of Cracking Damages of Concrete Structures Using Acoustic Emission
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Identification of Cracking Damages of Concrete Structures Using Acoustic Emission

机译：利用声发射识别混凝土结构的开裂损伤

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摘要

The damage in concrete structures generally starts with microcracking and thus it is important to find and explore these microcracks in concrete in order to ensure appropriate safety and serviceability. The purpose of the present study is to identify the damage characteristics of concrete structures due to cracking by employing the acoustic emission techniques. A comprehensive experimental study has been done. The cracking damages under tensile and flexural loadings have been identified and the bond damage between steel and concrete have been also characterized. It is seen that the amplitudes and energy level of Acoustic Emission(AE) events are found to be relatively small for bond cracking damages and large for tensile cracking damages. The present study provides useful data which can be used to identify the various types of cracking damages in concrete structures. This will allow efficient safety management of concrete structures through monitoring of internal cracking based on acoustic emission.
机译：混凝土结构的损坏通常始于微裂纹，因此重要的是在混凝土中发现和探索这些微裂纹，以确保适当的安全性和可维修性。本研究的目的是通过使用声发射技术来识别混凝土结构由于破裂而造成的破坏特征。全面的实验研究已经完成。已经确定了在拉伸和弯曲载荷下的开裂损伤，并且还表征了钢和混凝土之间的粘结损伤。可以看出，声发射（AE）事件的幅度和能级对于粘结裂纹损伤相对较小，而对于拉伸裂纹损伤较大。本研究提供了有用的数据，可用于识别混凝土结构中各种类型的开裂损伤。通过监测基于声发射的内部裂缝，这将允许对混凝土结构进行有效的安全管理。

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