Biaxial Loading Experiments for Determining Interfacial Fracture Toughness

[+] Author and Article Information
K. M. Liechti, Y.-S. Chai

Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX 78712

J. Appl. Mech 58(3), 680-687 (Sep 01, 1991) (8 pages) doi:10.1115/1.2897248 History: Received November 10, 1989; Revised April 04, 1990; Online March 31, 2008


The paper establishes the range of in-plane fracture mode mixtures and contact zone sizes that can be obtained from an edge-cracked bimaterial strip under biaxial applied displacements. The development of a suitable loading device for and the application of crack opening interferometry to interfacial crack initiation experiments is described. The crack initiation process under bond-normal loading is examined in detail for a glass/epoxy interface in order to establish a hybrid optical interference/finite element analysis technique for extracting mixed-mode fracture parameters.

Copyright © 1991 by The American Society of Mechanical Engineers
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