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Ultrasonically stimulated temperature rise around dislocation: extended defect mapping and imaging
Published online by Cambridge University Press: 15 July 2004
Abstract
The nonuniform temperature distribution in a crystal surface during ultrasonic loading has been detected. This effect was associated with a sonic-stimulated temperature rise around dislocations and heating of the nonperfect regions of the samples investigated. The dislocation moved in an ultrasonic field was considered as a linear thermal source. We calculated the temperature distribution around dislocations and determined conditions of the discrete and continuous distribution of thermal sources for Hg$_{1-x}$CdxTe alloys. We also discuss the possibility of using the investigated effect as the basis of a non-destructive technique for extended defect mapping and imaging in crystals.
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- © EDP Sciences, 2004