Carbon nanotubes thin film sensor and characterization of its strain sensing

被引：0

作者：

Nie P. ^{[1
]}

Zhang D. ^{[1
]}

Chen Y. ^{[1
]}

Lu S. ^{[1
]}

Han J. ^{[1
]}

机构：

[1] College of Electromechanical Engineering, Shenyang Aerospace University, Shenyang

来源：

Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2016年 / 42卷 / 04期

关键词：

Carbon nanotubes thin films; Monitoring of structural damage; Sensor; Strain sensing; Vacuum filtration;

D O I：

10.13700/j.bh.1001-5965.2015.0271

中图分类号：

学科分类号：

摘要：

Due to the aviation accident caused by structure deformation occurring frequently, the health monitoring of aircraft's structure has become one of the effective means of prevention. Carbon nanotubes thin film can be used as strain sensor for health monitoring of structure damage. The dispersion techniques such as mechanical agitation, ultrasonic processing and centrifugal processing had been combined for realizing the monodispersion of carbon nanotubes in aqueous medium. Carbon nanotubes thin films was fabricated with monodispersion solution of muti-walled carbon nanotubes through vacuum filtration method for strain sensing. We designed a carbon nanotubes thin film sensor which was formed with matrix of structure for strain sensing. Bending strain sensing experiment shows that carbon nanotubes thin film sensors in different strain ranges and different cycling times and different temperature conditions has good strain sensing characteristic. The response and sensitivity to strain of carbon nanotubes thin film were investigated. The sensing mechanism of carbon nanotubes film shows that the resistance of the carbon nanotubes thin film increases with the increase of strain. The results indicate that carbon nanotubes thin film sensor has a very high strain sensitivity in the strain range of 0-22500 με with gauge factor of 188.31 and has excellent reversible and repetition characteristics. © 2016, Editorial Board of JBUAA. All right reserved.

引用

页码：677 / 684

页数：7

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