Accession Number : ADA256955
Title : The Axisymmetric Crack Problem in a Nonhomogeneous Medium
Descriptive Note : Final rept.
Corporate Author : LEHIGH UNIV BETHLEHEM PA
Personal Author(s) : Ozturk, M ; Erdogan, F
Report Date : Aug 1992
Pagination or Media Count : 28
Abstract : In this paper the axisymmetric crack problem for a nonhomogeneous medium is considered. It is assumed that the shear modulus is a function of z approximated by mu = mu (sub 0) e to the alpha z power. This is a simple simulation of materials and interfacial zones with intentionally or naturally graded properties. The problem is a mixed mode problem and is formulated in terms of a pair of singular integral equations. With fracture mechanics applications in mind, the main results given are the stress intensity factors as a functions of the nonhomogeneity parameter alpha for various loading conditions. Also given are some sample results showing the crack opening displacements.
Descriptors : *CRACKING(FRACTURING) , *FRACTURE(MECHANICS) , INTERFACES , MATERIALS , CRACKS , INTENSITY , AXISYMMETRIC , FATIGUE(MECHANICS) , PLATING , SHALE , POISSON RATIO , INTEGRAL EQUATIONS , SANDSTONE , CERAMIC MATERIALS , DIFFUSION BONDING , DISPLACEMENT , LOADS(FORCES) , SHEAR MODULUS
Subject Categories : Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE