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RESEARCH PAPERS

A Hybrid Experimental-Numerical Test Specimen for Laminated Composite Materials

[+] Author and Article Information
W. K. Rule

Department of Engineering Mechanics, College of Engineering, University of Alabama, Tuscaloosa, AL 35487-0278

G. E. Weeks

Department of Aerospace Engineering, College of Engineering, University of Alabama, Tuscaloosa, AL 35487-0278

J. Energy Resour. Technol 113(3), 193-196 (Sep 01, 1991) (4 pages) doi:10.1115/1.2905804 History: Received November 01, 1989; Revised June 23, 1991; Online April 16, 2008

Abstract

A new technique is described for determining all four elastic constants of a lamina from a single laminated specimen of arbitrary, symmetric lay-up. This specimen is subjected to three different loading conditions, and the experimental data is reduced by means of a finite element analysis. The testing procedure for the specimen is relatively easy, which can result in considerable time and cost savings over traditional methods. The new specimen generates biaxial stress states. Thus, the material properties determined from such a configuration may be more appropriate for later use in structural analysis than those determined from traditional specimens with uniform uniaxial stress states.

Copyright © 1991 by The American Society of Mechanical Engineers
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