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An Analytical Study on Prestrain and Shape Memory Effect of Composite Reinforced with Shape Memory Alloy  

이재곤 (대구가톨릭대학교 기계자동차공학부)
김진곤 (대구가톨릭대학교 기계자동차공학부)
김기대 (대구가톨릭대학교 기계자동차공학부)
Publication Information
Composites Research / v.17, no.5, 2004 , pp. 54-60 More about this Journal
Abstract
A new three-dimensional model for predicting the relationship between the prestrain of the composite and the amount of phase transformation of shape memory alloy inducing shape memory effect has been proposed by using Eshelby's equivalent inclusion method with Mori-Tanaka's mean field theory. The model composite is aluminum matrix reinforced with short TiNi fiber shape memory alloy, where the matrix is work-hardening material of power-law type. The analytical results predicted by the current model show that most of the prestrain is induced by the plastic deformation of the matrix, except the small prestrain region. The strengthening mechanism of the composite by the shape memory effect should be explained by excluding its increase of yield stress due to the work-hardening effect of the matrix.
Keywords
shape memory alloy reinforced composite; prestrain; shape memory effect; phase transformation; Eshelby's equivalent inclusion method; Mori-Tanaka's mean field theory;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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