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Study on Electromechanical Behavior of Unidirectional Carbon Fibre Sheet without Epoxy Resin Matrix
The relationship between stress, strain and electrical resistance of carbon fibre sheet without an epoxy resin matrix has been studied. Carbon fibre sheet specimens were tested under a tensile loading condition to investigate their self-diagnostic properties, that is, the ability of the specimens to sense the strain themselves. The experimental results indicate that the electrical resistance of carbon fibre sheet changes linearly with applied strain, such that carbon fibre sheet can act as a sensor to measure strain. A parallel circuit is employed to model the electrical behavior of carbon fibre sheet. The Weibull distribution model for fibre strength is made use of to calculate change in electrical resistance as fibres break. The ratio of broken fibres not making contact with neighbouring fibres, to all broken fibres in total is identified by fitting the test data. The results calculated using the parallel circuit model agree well with the test results.
Study on Electromechanical Behavior of Unidirectional Carbon Fibre Sheet without Epoxy Resin Matrix
The relationship between stress, strain and electrical resistance of carbon fibre sheet without an epoxy resin matrix has been studied. Carbon fibre sheet specimens were tested under a tensile loading condition to investigate their self-diagnostic properties, that is, the ability of the specimens to sense the strain themselves. The experimental results indicate that the electrical resistance of carbon fibre sheet changes linearly with applied strain, such that carbon fibre sheet can act as a sensor to measure strain. A parallel circuit is employed to model the electrical behavior of carbon fibre sheet. The Weibull distribution model for fibre strength is made use of to calculate change in electrical resistance as fibres break. The ratio of broken fibres not making contact with neighbouring fibres, to all broken fibres in total is identified by fitting the test data. The results calculated using the parallel circuit model agree well with the test results.
Study on Electromechanical Behavior of Unidirectional Carbon Fibre Sheet without Epoxy Resin Matrix
Li, Hui (author) / Zhou, Wensong (author) / Ou, Jinping (author)
Advances in Structural Engineering ; 7 ; 437-445
2004-10-01
9 pages
Article (Journal)
Electronic Resource
English
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