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Title: Failure modes and durability of Kevlar/epoxy composites

The fracture topographies of Kevlar 49/epoxy composite strands and multilayer composites in the form of pressure vessels are discussed in terms of the microscopic deformation and failure processes of the composites. The effect of resin ductility and fiber-matrix interfacial bond strength on mechanisms of fiber damage are considered. The failure of the Kevlar 49 fibers by a splitting process and the parameters, such as fiber fibrillation and macromolecular chain scission, that control such a process, are discussed in relation to fiber and composite performance.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
5225030
Report Number(s):
UCRL-83875; CONF-801010-2
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 12. National Society for the Advancement of Materials and Process Engineering technical conference, Seattle, WA, USA, 7 Oct 1980
Research Org:
California Univ., Livermore (USA). Lawrence Livermore Lab.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ARAMIDS; FRACTURE PROPERTIES; EPOXIDES; DEFORMATION; DUCTILITY; FAILURES; PRESSURE VESSELS; RESINS; CONTAINERS; MECHANICAL PROPERTIES; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; POLYMERS; TENSILE PROPERTIES 360303* -- Composite Materials-- Mechanical Properties-- (-1987)