Multifunctional smart material system (MSMS) using shape memory alloys and shape memory polymers

Pritha Ghosh; Ashwin Rao; A. R. Srinivasa

doi:10.1117/12.915750

27 March 2012 Multifunctional smart material system (MSMS) using shape memory alloys and shape memory polymers

Pritha Ghosh, Ashwin Rao, A. R. Srinivasa

Proceedings Volume 8341, Active and Passive Smart Structures and Integrated Systems 2012; 83411O (2012) https://doi.org/10.1117/12.915750
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

A Multifunctional smart material system consists of two or more different smart material phases in the form of a hybrid system, in which every phase performs a different but necessary function. In this work, we show how thermally responsive Shape memory alloys (SMA) and Shape Memory Polymers (SMP) can be combined to form a Multifunctional Smart Material system (MSMS). The transformation temperatures M_f, M_s, A_s and A_f of SMA and the glass transition T_g for the SMP play a critical role in designing such a MSMS. We illustrate how varying the T_g of SMP between the transformation temperatures M_f and A_f of SMA results in a multi-state smart bias system with varying stiffnesses. In addition, we establish guidelines for the volume fractions of the individual constituents of such MSMSs to form "smart-bias" tools/devices. We further propose various ideas for smart devices that can operate through three temperature ranges, with one material constituent being passive and the other active at a given temperature.

Citation Download Citation

Pritha Ghosh, Ashwin Rao, and A. R. Srinivasa "Multifunctional smart material system (MSMS) using shape memory alloys and shape memory polymers", Proc. SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012, 83411O (27 March 2012); https://doi.org/10.1117/12.915750

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