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TECHNICAL PAPERS

Mixed Mode Fracture Toughness of Engineering Materials

[+] Author and Article Information
S. V. Kamat, J. P. Hirth

Mechanical and Materials Engineering Department, Washington State University, Pullman, WA 99164-2920

J. Eng. Mater. Technol 117(4), 391-394 (Oct 01, 1995) (4 pages) doi:10.1115/1.2804731 History: Online November 27, 2007

Abstract

The effect of mixed mode loading on the fracture toughness of engineering materials is rationalized in terms of the operative fracture mechanism as well as the deformation field ahead of the crack tip. It was found that mixed mode fracture is of utmost importance in materials which fail by stable ductile fracture caused by second phase particles, since in such materials there is a significant reduction in fracture toughness on mixed-mode loading. An autocatalytic shear localization-void formation mechanistic model was found to qualitatively explain the mixed mode fracture behavior in such materials.

Copyright © 1995 by The American Society of Mechanical Engineers
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