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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.48  No.11 (2007)  >  pp.2969-2972

MATERIALS TRANSACTIONS
<<Previous article Vol.48  No.11 (2007)   pp.2969 - 2972 Next article>>

Influence of Elastic Tensile Stress on Electrical Resistivity of Carbon Fiber

Yoshitake Nishi1) and Mitsuru Hirano1)
1) Graduate School of Metallurgical Engineering, Tokai University

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.


Keyword:
stress dependence, carbon fiber, electrical resistivity, initial stress, tensile test

Received: April 25, 2007
Accepted: August 27, 2007 , Published online: October 25, 2007
Copyright (c) 2007 The Japan Institute of Metals

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