Piezoresistivity of carbon fiber mat/epoxy resin composites

被引：0

作者：

Zheng, Huasheng ^{[1
,2
]}

Zhu, Sirong ^{[3
]}

Li, Zhuoqiu ^{[3
]}

机构：

[1] Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan

[2] School of Science, Wuhan University of Science and Technology, Wuhan

[3] School of Science, Wuhan University of Technology, Wuhan

来源：

Gongneng Cailiao/Journal of Functional Materials | 2015年 / 46卷 / 11期

关键词：

Carbon fiber mat; Epoxy resin; Health monitoring; Piezoresistivity;

D O I：

10.3969/j.issn.1001-9731.2015.11.018

中图分类号：

学科分类号：

摘要：

The piezoresistive responses of the composites fabricated by short-cut carbon fiber mat and epoxy resin were studied by uniaxial tension tests. Positive piezoresistive effect of this composite was found in the test. The gauge factor for single-lamina carbon fiber mat/epoxy resin composite is as high as 13.9, but the resistance for this composite is observed to be decreased gradually. More stable piezoresistivity was attained in laminated composite and the gauge factors were observed to decrease with the increase of the number of the laminas. The gauge factor for 5-lamina carbon fiber mat/epoxy resin composite is 5.7. The improvement in stability and the decrease in gauge factor for the laminated composite are due to the solid conductive network of this composite. The laminated carbon fiber mat/epoxy resin composites were used as smart layers on the beam surfaces, and based on their piezoresistivities, the structural deformation monitoring upon cyclic load and the damage detecting upon monotonous load were conducted ©, 2015, Journal of Functional Materials. All right reserved.

引用

页码：11085 / 11088and11093

共 12 条

[11]

Shui X., Chung D.D.L., A piezoresistive carbon filament polymer-matrix, Smart Materials & Structures, 5, pp. 243-246, (1996)

[12]

Wang X., Chung D.D.L., Short carbon fiber reinforced epoxy coating as a piezoresistive strain sensor for cement mortar, Sensors and Actuators A, 71, pp. 208-212, (1998)

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