ISSN: 0884-6804
Page Count: 4

Shear Failure and Impact Resistance in Graphite Fiber Laminates
Hinkley, JA
Chemical engineer, NASA Langley Research Center, VA

Srinivasan, K
Postdoctoral associate and graduate student, Old Dominion University, VA

Coats, TW
Postdoctoral associate and graduate student, Old Dominion University, VA

Abstract

The multispan beam (MSB) test was evaluated as a predictor of damage resistance and damage tolerance in quasi-isotropic graphite laminates. Materials studied were five commercial prepreg systems using high-strain and intermediate-modulus carbon fibers, as well as an amorphous thermoplastic system prepared in-house. Failure loads and displacements in the MSB tests showed little rate dependence. Values of compressive strength after a standard low-velocity impact (compression after impact [CAI]) correlated fairly well with the MSB results.

Keywords:
composite materials, graphite composites, epoxy resins, thermoplastic resins, impact damage, compressive strength, damage tolerance, bending tests

Paper ID: CTR10103J
DOI: 10.1520/CTR10103J
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