Highly Stretchable Miniature Strain Sensor for Large Dynamic Strain Measurement

被引：2

作者：

Yao S. ^{[1
]}

Nie X. ^{[2
]}

Yu X. ^{[3
]}

Song B. ^{[4
]}

Blecke J. ^{[4
]}

机构：

[1] Department of Mechanical and Energy Engineering, University of North Texas, Denton, 76203, TX

[2] Department of Mechanical Engineering, Southern Methodist University, Dallas, 75275, TX

[3] Department of Mechanical Engineering, New York Institute of Technology, Old Westbury, 11568, NY

[4] Sandia National Laboratories, Albuquerque, 87185, NM

来源：

IEEE Sensors Letters | 2017年 / 1卷 / 03期

关键词：

carbon nanotube (CNT)/polydimethylsiloxane (PDMS) composite; high-rate dynamic strain; highly stretchable; Mechanical sensors; strain sensor;

D O I：

10.1109/LSENS.2017.2709943

中图分类号：

学科分类号：

摘要：

In this letter, a new type of highly stretchable strain sensor was developed to measure large deformation of a specimen subjected to dynamic loading. The sensor was based on the piezoresistive response of carbon nanotube (CNT)polydimethylsiloxane (PDMS) composite thin films. The piezoresistive response of CNT composite gives fast response in strain measurement, whereas the ultrasoft PDMS matrix provides high flexibility and ductility for large strain measurement. Experimental results showed that the CNTPDMS sensor is capable of measuring large strains (up to 26) with an excellent linearity and ultrafast response (less than 30s). This stretchable strain sensor also exhibits much higher sensitivities, with a gauge factor of as high as 80, than the conventional foil strain gages. These strain sensing capabilities (large strain, ultafast response, high linearity, and high gauge factor) make the fabricated sensor suitable for high-rate dynamic loading test applications. © 2017 IEEE.

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