Abstract
A new technique is described, which allows the assessment of elastic and inelastic regions around a macroscopic defect in ferroelectric-ferroelastic ceramics. The accuracy and robustness of the method are demonstrated on a PZT plate with a centered hole subjected to uni-axial compressive stresses. From the electrical potential distribution on the sample surface, the mechanical response of the material is obtained at different load levels.
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Kounga Njiwa, A.B., Lupascu, D.C., Aulbach, E. et al. An optical method to assess electromechanical coupling in ferroelectric ceramics. Experimental Mechanics 45, 290–294 (2005). https://doi.org/10.1007/BF02427953
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DOI: https://doi.org/10.1007/BF02427953