Three-dimensional phase transformation model for shape memory alloys

David John Barrett; Brian J. Sullivan

doi:10.1117/12.200921

2 February 1995 Three-dimensional phase transformation model for shape memory alloys

David John Barrett, Brian J. Sullivan

Proceedings Volume 2427, Active Materials and Smart Structures; (1995) https://doi.org/10.1117/12.200921
Event: Symposium on Active Materials and Smart Structures: Society of Engineering Science 31st Annual Meeting, 1994, College Station, TX, United States

Abstract

Shape memory alloys have been used almost exclusively in components subjected to simple loadings such as uniaxial tension, pure bending or torsion. As part of the development of smart structures and adaptive components, shape memory alloys must be designed to function in complex, multi-dimensional stress states. In order for these materials to participate as active elements in smart structural designs, the alloys must undergo a phase transformation, during which their properties change. For 1D stress states, data generated in simple stress-strain- temperature tests is sufficient to define the onset and completion of a phase transformation. When multi-dimensional stress states are encountered, data from more complicated tests will be needed to define the transformation. In this paper, a model for multi-dimensional phase transformation criteria is introduced and discussed, and tests for defining the boundaries of the initiation and completion of phase transformation surfaces are proposed.

Citation Download Citation

David John Barrett and Brian J. Sullivan "Three-dimensional phase transformation model for shape memory alloys", Proc. SPIE 2427, Active Materials and Smart Structures, (2 February 1995); https://doi.org/10.1117/12.200921

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