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RESEARCH PAPERS: Additional Research Papers

In-Situ Compressive Strength of Carbon/Epoxy AS4/3501-6 Laminates

[+] Author and Article Information
G. E. Colvin, S. R. Swanson

Mechanical Engineering Department, University of Utah, Salt Lake City, Utah 84112

J. Eng. Mater. Technol 115(1), 122-128 (Jan 01, 1993) (7 pages) doi:10.1115/1.2902144 History: Received January 07, 1991; Revised August 25, 1992; Online April 29, 2008

Abstract

An experimental program has been conducted to evaluate how changes in laminate lay-up can influence the compression behavior of fiber-dominated, resin-based composites. The testing utilized a cylindrical, 3.81 cm (1.5 in.) diameter test specimen because it provides inherent resistance to global buckling failure modes and lack of free edge effects. Seven different laminates representing 0° dominated lay-ups, axial bias lay-ups, and quasi-isotropic lay-ups were tested. The measured macroscopic stress strain failure data showed a strong in-situ dependence of the 0° failure strain on the lay-up. The quasi-isotropic laminate failure strains were nearly twice the 0° dominated laminate failure strains. Photomicrographs of the failure zone from sections of failed specimens showed the presence of fiber kinking in all the laminate failures.

Copyright © 1993 by The American Society of Mechanical Engineers
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