Accession Number : ADA186807

Title :   Sublaminate Damage Mechanisms in Composite Structures.

Descriptive Note : Final rept. 15 Apr 85-14 Apr 87,

Corporate Author : GEORGIA INST OF TECH ATLANTA SCHOOL OF AEROSPACE ENGINEERING

Personal Author(s) : Rehfield, Lawrence W ; Armanios, Erian A

PDF Url : ADA186807

Report Date : Jul 1987

Pagination or Media Count : 44

Abstract : This final report summarizes the objectives and accomplishments of research on sublaminate damage mechanisms in composite structures. It may be separated into three elements. The first is interlaminar fracture analysis methodology development. Existing methods for predicting strain energy release rate components have been assessed, and two new alternative approaches have been developed and illustrated. The second is the creation of a phenomenologically based criterion for damage tolerance analysis of composite structures. An equivalent damage parameter and a relevant compliance measure are determined from experiments. This methodology has been validated by seven independent experiments. Keywords: Delamination, Damage tolerance, Damage in composites, Composite materials.

Descriptors :   *COMPOSITE STRUCTURES, *DAMAGE ASSESSMENT, *LAMINATES, COMPOSITE MATERIALS, DAMAGE, ENERGY TRANSFER, STRAIN RATE, TOLERANCE, FRACTURE(MECHANICS), STRAIN RATE, PEEL STRENGTH, MATHEMATICAL PREDICTION, MICROCRACKING

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE