Carbon nanotube yarn strain sensors

被引：202

作者：

Zhao, Haibo ^{[1
]}

Zhang, Yingying ^{[2
]}

Bradford, Philip D. ^{[3
]}

Zhou, Qian ^{[4
]}

Jia, Quanxi ^{[2
]}

Yuan, Fuh-Gwo ^{[1
]}

Zhu, Yuntian ^{[3
]}

机构：

[1] N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA

[2] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

[3] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[4] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA

来源：

NANOTECHNOLOGY | 2010年 / 21卷 / 30期

关键词：

COMPOSITES;

D O I：

10.1088/0957-4484/21/30/305502

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Carbon nanotube (CNT) based sensors are often fabricated by dispersing CNTs into different types of polymer. In this paper, a prototype carbon nanotube (CNT) yarn strain sensor with excellent repeatability and stability for in situ structural health monitoring was developed. The CNT yarn was spun directly from CNT arrays, and its electrical resistance increased linearly with tensile strain, making it an ideal strain sensor. It showed consistent piezoresistive behavior under repetitive straining and unloading, and good resistance stability at temperatures ranging from 77 to 373 K. The sensors can be easily embedded into composite structures with minimal invasiveness and weight penalty. We have also demonstrated their ability to monitor crack initiation and propagation.

引用

页数：5

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