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Study of elastic wave propagation induced by piezoelectric actuators for crack identification

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Abstract

The current paper provides a theoretical study of elastic wave propagation in a cracked elastic medium induced by an embedded piezoelectric actuator. The formulation of the problem is based on a newly developed actuator model and the solution of coupled crack and actuator problems. The interaction between an actuator and a crack is studied to develop basic understanding of the effect of the crack upon the wave field generated. The resulting wave field is used to simulate 'sensor signals'. Scattered wave from the crack is then regenerated by solving a reverse elastodynamic problem and used in an imaging technique to identify the crack.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2G8

    X.D. Wang & G.L. Huang

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  1. X.D. Wang
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  2. G.L. Huang
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Correspondence to X.D. Wang.

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Wang, X., Huang, G. Study of elastic wave propagation induced by piezoelectric actuators for crack identification. International Journal of Fracture 126, 287–306 (2004). https://doi.org/10.1023/B:frac.0000026580.54400.8a

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  • DOI: https://doi.org/10.1023/B:frac.0000026580.54400.8a

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