Comparative Studies on Damage Detection Based on Dynamic Response of a Beam Subjecting to Moving Load

Wei Wei Zhang; Hong Wei Ma

doi:10.4028/www.scientific.net/AMM.330.925

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 330Comparative Studies on Damage Detection Based on...

Comparative Studies on Damage Detection Based on Dynamic Response of a Beam Subjecting to Moving Load

Abstract:

In this paper, the feasibility and sensitivity of damage detection based on dynamic responses of a simply supported beam were examined theoretically and numerically, which were the displacement, velocity and acceleration histories at mid-span on a beam under the moving load. First, the theoretic background of a damage beam vibration subjecting to moving load was briefly described. And then a finite element method was used to calculate the responses of the beam. Using wavelet transform of the dynamic responses, the damage could be identified. Case studies showed that the velocity response was sensitive to the damage and the simulations illustrated the better quality of damage detection by velocity than the ones by displacement and acceleration.

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Periodical:

Applied Mechanics and Materials (Volume 330)

Pages:

925-930

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.330.925

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Online since:

June 2013

Authors:

Wei Wei Zhang, Hong Wei Ma

Keywords:

Beam, Damage Detection, Dynamic, Moving Load, Wavelet Transform (WT)

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