Structural Engineering and Mechanics

  • 제26권2호
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  • Pages.179-190
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  • 2007
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Damage identification in beam-like pipeline based on modal information

  • Yang, Zhi-Rong (Department of Engineering Mechanics, Dalian University of Technology) ;
  • Li, Hong-Sheng (Department of Engineering Mechanics, Dalian University of Technology) ;
  • Guo, Xing-Lin (Department of Engineering Mechanics, Dalian University of Technology) ;
  • Li, Hong-Yan (Dalian Inspection Institute of Boiler Pressure Container)
  • 투고 : 2006.05.17
  • 심사 : 2006.11.27
  • 발행 : 2007.05.30
⟨ 이전 논문 다음 논문 ⟩

초록

Damage detection based on measured vibration data has received intensive studies recently. Frequently, the damage to a structure may be reflected by a change of some system parameters, such as a degradation of the stiffness. In this paper, we apply a method to nondestructively locate and estimate the severity of damage in corrosion pipeline for which a few natural frequencies or mode shapes are available. The method is based on the strain modal sensitivity ratio (SMSR) and the orthogonality conditions sensitivities (OCS) applied to vibration features identified during the monitoring of the pipeline. The advantage of these methods is that it only requires measuring few modal parameters. The SMSR-based and OCS-based damage detection methods are illustrated using computer-simulated and laboratory testing data. The results show that the current method provides a precise indication of both the location and the extent of corrosion pipeline.

키워드

참고문헌

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피인용 문헌

  1. Application of wavelet packet transform in subsea pipeline bedding condition assessment vol.39, 2012, https://doi.org/10.1016/j.engstruct.2012.01.017
  2. Failure Analyses of Propagation of Cracks in Repaired Pipe Under Internal Pressure vol.19, pp.1, 2019, https://doi.org/10.1007/s11668-019-00592-3