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RESEARCH PAPERS

The Effect of Fiber Poisson Expansion in Micro-Indentation Tests

[+] Author and Article Information
G. Meda, S. F. Hoysan, P. S. Steif

Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213

J. Appl. Mech 60(4), 986-991 (Dec 01, 1993) (6 pages) doi:10.1115/1.2901013 History: Received December 16, 1991; Revised August 14, 1992; Online March 31, 2008

Abstract

The fiber micro-indentation push-in test is studied in detail for the case of a Coulomb friction interface law. Using an integral equation method, as well as a finite element method, we investigate the “Poisson effect”; that is, the tendency for the loading to raise the normal stresses at the interface which can, in turn, augment the shear stresses. Results of the detailed analyses are compared with those of an approximate analysis which neglects the induced normal stresses and with one that includes them. A favorable comparison with the latter approximation enables us to assess the effect of material parameters on the strength of the “Poisson effect.”

Copyright © 1993 by The American Society of Mechanical Engineers
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