Interaction Between an Edge Dislocation and a Lamellar Inhomogeneity With a Slipping Interface

[+] Author and Article Information
L. Stagni, R. Lizzio

Dipartimento di Fisica, Università degli Studi di Roma “La Sapienza,” 00185 Roma, Italy; Gruppo Nazionale di Struttura della Materia del C.N.R. and Centro Interuniversitario di Struttura della Materia del M.P.I., Roma, Italy

J. Appl. Mech 59(1), 215-217 (Mar 01, 1992) (3 pages) doi:10.1115/1.2899434 History: Received January 15, 1990; Revised March 04, 1991; Online March 31, 2008


The plane elasticity problem of an internal stress source located near a lamellar inhomogeneity is considered. It is assumed that the lamella-matrix interface does not transmit tangential displacements or shear tractions (slipping interface). The elastic field is given in terms of the source bulk field and one parameter formed from the elastic constants. The image force on an edge dislocation near the lamella is calculated and discussed. A dislocation stable-equilibrium position exists in a domain of elastic constants and Burgers vector directions. This result is characteristic of the interaction with a slipping lamellar inhomogeneity having finite thickness.

Copyright © 1992 by The American Society of Mechanical Engineers
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