Modeling of the electrical resistance of shape memory alloy wires

被引：63

作者：

Cui, Di ^{[1
,2
,3
]}

Song, Gangbing ^{[1
]}

Li, Hongnan ^{[3
]}

机构：

[1] Univ Houston, Dept Mech Engn, Houston, TX 77204 USA

[2] Dalian Univ, Key Lab Predict & Control Complicated Struct Syst, Educ Dept Liaoning Prov, Dalian 116622, Peoples R China

[3] Dalian Univ Technol, Dept Civil & Hydraul Engn, Dalian 116024, Peoples R China

来源：

SMART MATERIALS AND STRUCTURES | 2010年 / 19卷 / 05期

基金：

美国国家科学基金会;

关键词：

ACTUATORS; BEHAVIOR; NITI;

D O I：

10.1088/0964-1726/19/5/055019

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The strain sensing principle of shape memory alloy (SMA) based on its electrical resistance (ER) value is analyzed in this paper. A mathematical model to describe this principle is developed based on the relationship between the electrical resistivity and the martensite fraction of an SMA wire. The proposed model can be used at different temperatures and different initial conditions. To verify the validity of the proposed model, various experiments were conducted. The numerical results based on the proposed model agree well with experimental results, indicating that an SMA wire with a proper model can be utilized as a sensing element.

引用

页数：8

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