Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Visualization of Delamination Region in Concrete Structures using Mode Shapes of Delaminated Concrete Section (II) : Impact-Echo Test

박리된 콘크리트의 진동 모드 형상을 이용한 콘크리트 구조물 박리 손상 영역 가시화 (II) : 충격-반향 시험

  • Oh, Taekeun (Department of Safety Engineering, Incheon National University) ;
  • Shin, Sung Woo (Department of Safety Engineering, Pukyoung National University)
  • Received : 2013.05.29
  • Accepted : 2013.09.30
  • Published : 2013.10.31
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Abstract

Previous study showed that delamination region in concrete structures can be successfully visualized using mode shapes of delaminated concrete section. However, modal tests for this purpose to obtain mode shapes of the delaminated concrete section may not be applicable in practice since, to correctly obtain the mode shapes of the section, the location and the shape of the delamination region in a structure should be known in advance. Unfortunately those are normally unknown in a real structure. Therefore, a moving forward test method may be useful to obtain the mode shapes of the concrete section when the location and the shape of the delamination region are not known. In this study, impact-echo testing based mode shape estimation technique is proposed and experimentally validated for visualization of delamination region.

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References

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