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Title: Compressive response of Kevlar/epoxy composites

A mathematical model is developed from the principle of minimum potential energy to determine the longitudinal compressive response of unidirectional fiber composites. A theoretical study based on this model is conducted to assess the influence of local fiber misalignment and the nonlinear shear deformation of the matrix. Numerical results are compared with experiments to verify this study; it appears that the predicted compressive response coincides well with experimental results. It is also shown that the compressive strength of Kevlar/epoxy is dominated by local shear failure. 12 references.
Authors:
;
Publication Date:
OSTI Identifier:
6978418
Resource Type:
Journal Article
Resource Relation:
Journal Name: J. Compos. Mater.; (United States); Journal Volume: 22
Research Org:
Alcoa Laboratories, Alcoa Center, PA (USA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ARAMIDS; COMPRESSION STRENGTH; EPOXIDES; COMPARATIVE EVALUATIONS; COMPOSITE MATERIALS; DEFORMATION; FIBERS; MATHEMATICAL MODELS; POTENTIAL ENERGY; SHEAR PROPERTIES; YOUNG MODULUS; ENERGY; MATERIALS; MECHANICAL PROPERTIES; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; SYNTHETIC MATERIALS 360603* -- Materials-- Properties