Accession Number : AD0777588

Title :   Crack Tip Stress Intensity Factors in Finite Anisotropic Plates.

Descriptive Note : Technical rept. Jul 72-Jul 73,

Corporate Author : CARNEGIE INST OF TECH PITTSBURGH PA DEPT OF CIVIL ENGINEERING

Personal Author(s) : Snyder,Matthew D. ; Cruse,Thomas A.

Report Date : AUG 1973

Pagination or Media Count : 126

Abstract : A numerical technique has been developed for determining stress intensity factors in cracked anisotropic plates of finite geometry. Using complex variable methods an exact solution is derived for the problem of unit loads applied to a cracked infinite anisotropic plate. This fundamental solution is used with the boundary-integral equation method for analysis of plates of finite geometry. Numerical results are obtained for center-cracked and double-edge cracked finite width tension specimens using material properties representative of a family of advanced fiber reinforced composite laminates. For these geometries the numerical results indicate that the isotropic stress intensity factor serves as a good approximation for anisotropic materials. (Author, modified-PL)

Descriptors :   *Fiber reinforced composites, *Laminates, *Fracture(Mechanics), Plates, Anisotropy, Crack propagation, Mathematical models, Computer programs, FORTRAN

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE