Paper Title:

Temperature Sensibility of Epoxy-Matrix Carbon Fiber Smart Layer

Periodical Applied Mechanics and Materials (Volume 189)
Main Theme Frontier in Information Engineering for Mechanics and Materials
Edited by Xiancan Deng and Yoshinori Hayafuji
Pages 48-51
DOI 10.4028/www.scientific.net/AMM.189.48
Citation Hua Sheng Zheng et al., 2012, Applied Mechanics and Materials, 189, 48
Online since July, 2012
Authors Hua Sheng Zheng, Jing Li, Si Rong Zhu, Zhuo Qiu Li
Keywords Carbon Fiber Smart Layer, NTC Effect, PTC Effect
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Abstract

The paper deals with the temperature sensitivity of a new type strain sensor named carbon fiber smart layer (CFSL) made of epoxy-matrix composites with short carbon fiber mats. The experiment result indicated that the epoxy matrix CFSL is sensitive to temperature variation. It exhibits NTC effect in -5℃~25℃ and exhibits PTC effect in 25℃~50℃. The NTC effect is relatively gentle and the PTC effect is relatively dramatic. The mechanism of both NTC effect and PTC effect is discussed based on the temperature sensitivities of carbon fiber itself and the fiber to fiber interface. Further experiment demonstrated its temperature sensing properties in the temperature scale in which the NTC effect or PTC effect exhibits individually.