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Wavelets-based damage localization on beams under the influence of moving loads

Published online by Cambridge University Press:  19 June 2013

Machorro-López José Manuel ,
Bellino Andrea ,
Marchesiello Stefano  and
Garibaldi Luigi
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Abstract

Early damage detection on structures plays a very important role for ensuring safety and reliability. This paper provides an efficient method based on wavelet transforms in order to detect and localize damage on structures subjected to moving loads such as beams and bridges. A numerical model based on the experimental test-rig utilized in this study is developed by using a finite element commercial software. Different types of damage on the bridge of the numerical model are simulated and transient analyses are performed by incorporating a load which moves constantly along the beam nodes. Continuous wavelet transform diagrams using the vertical acceleration responses show that damage can be identified and localized even with significant percentages of noise. Nevertheless, the method is improved by filtering the signals, removing the border effects, and calculating the total wavelet energy of the beam from the coefficients along the selected range of scales. Thus, the accumulation of wavelet energy could indicate the presence of damage. Finally, laboratory experiments are conducted to validate this work and a good agreement between numerical and experimental results is obtained.

Keywords

Damagebeamsmoving loadswaveletsfinite element
Type
Research Article
Information
Mechanics & Industry , Volume 14 , Issue 2 , 2013 , pp. 107 - 113
Copyright
© AFM, EDP Sciences 2013

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References

M. Davey, M.L. Wald, Potential flaw is found in design of fallen bridge, The New York Times, 8, 2007
Farrar, C.R., Jauregui, D.A., Comparative study of damage identification algorithms applied to a bridge: I. Experiment, Smart Mater. Struct. 7 (1998) 704–719 CrossRefGoogle Scholar
Liew, K.M., Wang, Q., Application of wavelet theory for crack identification in structures, J. Eng. Mech. 124 (1998) 152–157 CrossRefGoogle Scholar
Zhu, X.Q., Law, S.S., Wavelet-based crack identification of bridge beam from operational deflection time history, Int. J. Solids Struct. 43 (2006) 2299–2317 CrossRefGoogle Scholar
C. Surace, R. Ruotolo, Crack detection of a beam using the wavelet transform, Proceedings of the 12th International Modal Analysis Conference, Honolulu, Hawaii, USA, 1994, pp. 1141–1147
Quek, S., Wang, Q., Zhang, L., Ang, K., Sensitivity analysis of crack detection in beams by wavelet technique, Int. J. Mech. Sci. 43 (2001) 2899–2910 CrossRefGoogle Scholar
Douka, E., Loutridis, S., Trochidis, A., Crack identification in beams using wavelet analysis, Int. J. Solids Struct. 40 (2003) 3557–3569 CrossRefGoogle Scholar
Gentile, A., Messina, A., On the continuous wavelet transforms applied to discrete vibrational data for detecting open cracks in damaged beams, Int. J. Solids Struct. 40 (2003) 295–315 CrossRefGoogle Scholar
C.L. Liu, A tutorial of the wavelet transform, 2010
Marchesiello, S., Bedaoui, S., Garibaldi, L., Argoul, P., Time-dependent identification of a bridge-like structure with crossing loads, Mech. Syst. Signal Process. 23 (2009) 2019–2028 CrossRefGoogle Scholar