Modeling of Electrical Resistivity Evolution Using Free Energy Analysis for NiTi Shape Memory Alloy Wires

Jian Jun Zhang

doi:10.4028/www.scientific.net/AMR.311-313.2282

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Preparation of Monodisperse Poly(N-Isopropylacrylamide) Microgels with β-Cyclodextrin Moieties
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 311-313Modeling of Electrical Resistivity Evolution Using...

Modeling of Electrical Resistivity Evolution Using Free Energy Analysis for NiTi Shape Memory Alloy Wires

Abstract:

This paper presents a transformation kinetics model of NiTi shape memory alloy (SMA) wires based on electrical resistivity (ER) derivative study under the assumption that the derivative of electrical resistivity with respect to temperature is in linear relationship with the derivative of free energy change with respect to temperature. Free energy change and electrical resistivity properties of SMA are analyzed based on differential scanning calorimetry (DSC) experiments during phase transformation. The simulated evolution of electrical resistivity during thermomechanical transformation is presented using the proposed model.

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Periodical:

Advanced Materials Research (Volumes 311-313)

Pages:

2282-2285

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.311-313.2282

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Online since:

August 2011

Authors:

Jian Jun Zhang

Keywords:

Electrical Resistivity, Free Energy, Mathematical Modeling, Self-Sensing, Shape Memory Alloy Actuator, Transformation Kinetics

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