Effects of Crack Surface Conductance on Intensity Factors for a Functionally Graded Piezoelectric Material Under Thermal Load
Effects of crack surface conductance on intensity factors for a functionally graded piezoelectric material under thermal load are investigated. The heat flux through the crack is assumed to be proportional to the local temperature difference. Moreover, two models for more realistic crack face electric boundary conditions are proposed. By using the Fourier transform, the thermal and electromechanical problems are reduced to a singular integral equation and a system of singular integral equations, respectively, which are solved numerically. Detailed results are presented to illustrate the influence of the thermal and electric conductance on the stress and electric displacement intensity factors.
Keywords: Fracture mechanics; Functionally graded piezoelectric material; Thermal and electric boundary conditions
Document Type: Research Article
Affiliations: Department of Mechanical Engineering, Faculty of Engineering, Osaka Institute of Technology, Asahi-ku, Osaka, Japan
Publication date: 01 July 2007
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