Dislocation annihilation and acoustic emission during plastic deformation of crystals
type: Item
instance of: scholarly article
title: Dislocation annihilation and acoustic emission during plastic deformation of crystals
zbMATH Open document ID: 0824.73015
DOI: 10.1016/0022-5096(94)90019-1
author: A. Trochidis
author: B. Polyzos
published in: Journal of the Mechanics and Physics of Solids
publication date: 1995-11-09T00:00:00Z
review text: (From the authors' summary.) A soliton describing the dislocation annihilation component of acoustic emission during plastic deformation of crystals is presented. Based on this soliton, a new model for an elementary acoustic emission source is proposed. This source is related to the mechanism of annihilation of a dislocation kink-antikink pair into a breather on account of acoustic losses. First, the dynamics of a dislocation system interacting with acoustic waves is investigated on the basis of a rather simple microscopic lattice model. It is shown that this interaction can be described by a d'Alembert wave equation coupled with a damped sine-Gordon equation. Within the framework of this model the emission of sound waves by annihilating dislocation kinks is then considered in detail, and the dislocation annihilation component of the acoustic emission is calculated and expressed in terms of the shear deformation strain.
Mathematics Subject Classification ID: 74J99
Mathematics Subject Classification ID: 74A60
Mathematics Subject Classification ID: 74M25
zbMATH DE Number: 754638
zbMATH Keywords: dislocation kink-antikink pair
zbMATH Keywords: acoustic waves
zbMATH Keywords: microscopic lattice model
zbMATH Keywords: d'Alembert wave equation
zbMATH Keywords: sine-Gordon equation
reviewed by: D. Ieşan
MaRDI profile type: Publication
full work available at URL: 0022-5096(94)90019-1
OpenAlex ID: W2025297111
cites work: The interaction of kinks and elastic waves
cites work: Applications of an energy-momentum tensor in nonlinear elastodynamics: Pseudomomentum and Eshelby stress in solitonic elastic systems
cites work: Q4326978
cites work: Solitary waves in micropolar elastic crystals
cites work: Nonlinear dynamics of oriented elastic solids. II: Propagation of solitons
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description: scientific article; zbMATH DE number 754638