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

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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 AS43501-6 grep 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.

Author(s):
Selvarathinam, Alex S. ; Weitsman, Y. J.
Author Organization(s):
TENNESSEE UNIV KNOXVILLE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
Descriptive Note:
Technical rept 1 Feb-30 Sep 97
Pagination:
0018

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
MAES-97-4.0-CM
Contract/Grant Number(s):
N00014-96-1-0821
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.6_Engineering; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_6.1.3_Switching and Routing; JCA_1.2.3_Educating
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*COMPOSITE MATERIALS, *CRACKING(FRACTURING), *DELAMINATION, LAMINATES, FINITE ELEMENT ANALYSIS, STRENGTH(MECHANICS), FATIGUE(MECHANICS), COMPRESSIVE STRENGTH, TRANSVERSE
Field(s)/Group(s):
Laminates and Composite Materials, Mechanics
Keyword(s):
AS4 3501 6 GR EP
Report Date:
1997 Nov 18
Creation Date:
1998 Jan 14