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Analysis of an orthotropic strip containing multiple defects bonded between two piezoelectric layers

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Abstract

In this paper, the problem of multiple defects in an orthotropic layer bonded between two piezoelectric layers is considered. The analysis is based on the stress fields caused by Volterra-type screw dislocation in the orthotropic strip. The solution for the dislocation is obtained by means of the complex Fourier transform. The dislocation solution is then employed as strain nuclei to derive singular integral equations for a medium weakened by multiple defects. These equations, as a class of Cauchy singular equations, are solved numerically for dislocation density functions. A number of examples is given for various crack orientations and material properties. At the end, it is shown that the effect of the properties and defect geometries on the stress intensity factors and hoop stress for cavities can be highly significant.

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Authors and Affiliations

  1. Faculty of Engineering, University of Zanjan, P. O. Box 45195-313, Zanjan, Iran

    M. Nourazar & M. Ayatollahi

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  1. M. Nourazar
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  2. M. Ayatollahi
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Correspondence to M. Ayatollahi.

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Nourazar, M., Ayatollahi, M. Analysis of an orthotropic strip containing multiple defects bonded between two piezoelectric layers. Acta Mech 227, 1293–1306 (2016). https://doi.org/10.1007/s00707-015-1559-0

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  • DOI: https://doi.org/10.1007/s00707-015-1559-0

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