Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 2000.06a
  • /
  • Pages.1925-1932
  • /
  • 2000
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Fault detections in ring structures using vibration modes

진동모드를 이용한 링 구조물의 결함 탐지

  • 김석현 (강원대학교 정밀기계공학과) ;
  • 장호식 (강원대학교 정밀기계공학과)
  • Published : 2000.06.22
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Abstract

Damage detection methods using vibration modes are investigated on ring structures and. modal behavior of the slightly asymmetric rings is examined. Mode shapes changes, MSER(modal strain energy ratio) and MCR(modal curvature ratio) are applied to identify the locations of faults or damages. Parameters are calculated and compared by finite element analysis on rings with designed local damages. Damages are modeled as reduced stiffness in the analysis. The results show MSER and MCR can be proper factors to detect local damages in ring structures.

Keywords