MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Influence of Elastic Tensile Stress on Electrical Resistivity of Carbon Fiber
Yoshitake NishiMitsuru Hirano
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2007 Volume 48 Issue 11 Pages 2969-2972

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Abstract

An influence of elastic tensile stress on electrical resistivity of carbon fiber has been investigated as a basic research to develop a strain sensor. The initial elastic stress reversibly decreases the electrical resistivity, although the large stress causing irreversible deformation increases the resistivity. In addition, a linear relationship between initial stress and reduced electrical resistivity is obtained in the initial elastic stress zone. As the initial elastic stress probably enhances the periodicity of graphite structure, decreasing in the electrical resistivity with tensile elastic stress is explained.

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© 2007 The Japan Institute of Metals and Materials
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