Damage Detection of Frame Structure Using Wavelet Transform

골조의 손상부위 추정에 웨이블렛 변환의 이용

  • 박종열 (인천대학교 토목환경시스템공학부) ;
  • 이의택 (인천대학교 토목환경시스템공학부) ;
  • 박진호 (인천대학교 토목환경시스템공학부) ;
  • 박형기 (인천대학교 토목환경시스템공학부)
  • Published : 2002.09.01


This paper presents a signal processing procedure to detect damage locations of frame structures by using continuous wavelet transform. Morlet wavelet is used as a mother wavelet in wavelet transform. Wavelet transform has the characteristics that allows the use of long time intervals at more precise low-frequency information, and shorter regions at high-frequency information. By this wavelet transform characteristics, Morlet wavelet may be used to identify the locations of damages in the structures. The numerical case studies show that this method can be applied to detect the damage location under a controlled sweeping load.