EFFECT OF THE MODE ORDER IN ARCH ON DAMAGE DETECTION
This paper deals with the detection of damage in arches using free vibrations. A stiffness reduction was considered as local detects. The radical displacement of the damaged arch was the signal used to assess the presence and location of defects through wavelet transform. A study of the influence of the mode order on damage detection is presented. We demonstrate that detection quality for a particular mode depends on the combination of two factors: the order of the mode and the location of the defect. For the odd or even vibration shapes, the higher the order of mode, the better the detection for the defect. The defect location close to a mode node reduces the detection.
Liang-Yan Cheng Wei-Wei Zhang Zhi-Hua Wang Hong-Wei Ma
College of Science & Engineering, Jinan University, Guangzhou 510632, P.R. China Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan 030024, P.R. China
国际会议
长沙
英文
426-430
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）