Accession Number : ADA333425

Title :   Transverse Cracking and Delamination in Cross-Ply GR/EP Composites under Dry, Saturated and Immersed Fatigue

Descriptive Note : Technical rept 1 Feb-30 Sep 97

Corporate Author : TENNESSEE UNIV KNOXVILLE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s) : Selvarathinam, Alex S. ; Weitsman, Y. J.

PDF Url : ADA333425

Report Date : 18 NOV 1997

Pagination or Media Count : 18

Abstract : Motivated by experimental observations, the finite element method is employed to model the competition between the transverse cracking and delamination modes of failure that occur in cross-ply AS4/3501-6 gr/ep coupons subjected to fatigue. The results explain the extensive delaminations and reduced crack densities that arise under immersed fatigue, as compared with fatigue in air.

Descriptors :   *COMPOSITE MATERIALS, *CRACKING(FRACTURING), *DELAMINATION, LAMINATES, FINITE ELEMENT ANALYSIS, STRENGTH(MECHANICS), FATIGUE(MECHANICS), COMPRESSIVE STRENGTH, TRANSVERSE.

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE