Fracture toughness investigations of ferroelectric materials considering effects on macro- and micro-scale |
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| Authors: | Roman Gellmann Andreas Ricoeur |
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| Institution: | Institute of Mechanics, Department of Mechanical Engineering, University of Kassel, D-34125 Kassel |
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| Abstract: | In the present work we study toughness variation of ferroelectric materials (PZT-5H) considering different scales for different poling and loading conditions. On the macro-scale we apply an extended theory of stresses at interfaces in dielectric solids. Further, on the micro-scale, nonlinear effects are introduced by applying the small scale switching approximation. The analysis is done considering the full anisotropy and electromechanical coupling of the material. (© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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