Virtual processing of hybrid SMA composites through martensitic transformation

Brian T. Lester; Yves Chemisky; Andrew Geltmacher; Siddiq. M. Qidwei; Dimitris C. Lagoudas

doi:10.1117/12.884624

28 April 2011 Virtual processing of hybrid SMA composites through martensitic transformation

Brian T. Lester, Yves Chemisky, Andrew Geltmacher, Siddiq. M. Qidwei, Dimitris C. Lagoudas

Proceedings Volume 7978, Behavior and Mechanics of Multifunctional Materials and Composites 2011; 79781L (2011) https://doi.org/10.1117/12.884624
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

The capability of Shape Memory Alloys (SMAs) to modify the reference configuration of an SMA-composite through martensitic transformation is explored. It is intended that through careful selection of a thermomechanical loading path the composite can be "processed" such that the constituent phases are in a preferential reference configuration. Specifically, for materials which have preferred loading conditions (i.e., compression versus tension), such processing results in a residual stress state which takes advantage of the improved properties. The composite under investigation is assumed to be composed of an SMA phase and an elasto-plastic second phase. For analysis of such a composite, a Finite Element (FE) mesh based on a realistic microstructure is constructed by using the results of X-ray tomography. The resultant microstructure is analyzed using FE techniques. It is shown that through an isobaric loading path, transformation generates plastic strains in the elasto-plastic phase which modify the composite reference configuration. The effect of different applied loads is considered.

Citation Download Citation

Brian T. Lester, Yves Chemisky, Andrew Geltmacher, Siddiq. M. Qidwei, and Dimitris C. Lagoudas "Virtual processing of hybrid SMA composites through martensitic transformation", Proc. SPIE 7978, Behavior and Mechanics of Multifunctional Materials and Composites 2011, 79781L (28 April 2011); https://doi.org/10.1117/12.884624

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