Acoustic Emission based Crack Tracking for Concrete Structures

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Abstract

Acoustic Emission (AE) monitoring is one of the possibilities to detect the crack distribution inexisting concrete structures. However, the conventional method requires further destruction likeopening of new cracks or propagation of the existing cracks. In this paper, a new strategy ofusing local cumulative AE activities during unloading to track the crack trajectory is proposed.With this strategy, a relatively low load level which does not cause further destruction to thestructure is needed. The possibility of this strategy is experimentally examined using a realscale beam of 10-ton damaged under cyclic loading. For calibration, the crack opening ismeasured by Digital Image Correlation (DIC). The crack patterns detected by the new strategyand DIC show good agreement.
Original languageEnglish
Title of host publicationJournal of Acoustic Emission
Subtitle of host publicationProceedings of International Conference on Acoustic Emission - 9
EditorsM.A. Hamstad, G. Manthei
PublisherAcoustic Emission Group
PagesS159-S164
Number of pages6
Volume36
Publication statusPublished - 2019
Event9th International Conference On Acoustic Emission and 61st Acoustic Emission Working Group Meeting - MxD, Chicago, United States
Duration: 17 Jun 201920 Jun 2019

Conference

Conference9th International Conference On Acoustic Emission and 61st Acoustic Emission Working Group Meeting
CountryUnited States
CityChicago
Period17/06/1920/06/19

Keywords

  • concrete beam
  • cyclic loading
  • Acoustic Emission
  • source localization
  • crack tracking

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