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Evaluation of fracture parameters for functionally gradient materials

Author(s): J. Sladek, V. Sladek & M. Hrina Abstract: Efficient numerical methods are presented to compute fracture parameters (stress intensity factor and T-term stress) for a cracked composite material body subjected to a stationary thermal load. The path independent integral representations for stress intensity factors and T-term stress in functionally gradient materials are derived. The thermomechanical fields along the integration path and in the enclosed domain are obtained by the boundary element method. The method is appropriate for computation of fracture parameters because the contour integral is evaluated over the path, which is far away from the crack tip. Numerical results are given for a thick-walled tube with edge cracks on the internal surface. 1 Introduction Cracking of structur... Pages: 10 Size: 849 kb Paper DOI: 10.2495/DM000031

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Download the Full Article This article is part of the WIT OpenView scheme and you can download the full text Adobe PDF article for FREE by clicking the 'Openview' icon to the right.