Multi-cracks detection of a beam-like structure based on the on-vehicle vibration signal and wavelet analysis

• Published in: Journal of sound and vibration Vol. 329; no. 21; pp. 4455 - 4465
• Main Authors: Nguyen, Khoa Viet, Tran, Hai Thanh
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 11.10.2010; Elsevier
• Subjects: Distortion; Dynamical systems; Exact sciences and technology; Flaw detection; Fracture mechanics; Fracture mechanics (crack, fatigue, damage...); Fundamental areas of phenomenology (including applications); Mathematical models; Measurement and testing methods; Physics; Solid mechanics; Static elasticity (thermoelasticity...); Structural and continuum mechanics; Vehicles; Vibration; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Wavelet transforms; Crack array; Motor car; Vibration; Rupture; Crack detection; Modeling; Bridges; Short crack; Wavelet transformation; Moving load; High speed; Signal processing; Signal analysis; Structural analysis; Cracked beam

In this paper, a new method for detecting a multi-cracked beam-like structure subjected to a moving vehicle is presented. The crack model is adopted from fracture mechanics. The dynamic response of the bridge–vehicle system is measured directly from the moving vehicle. When moving along the structur...