The tensile strength and ductility of continuous fibre composites |
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Authors: | S T Mileiko |
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Affiliation: | (1) Institute of Solid State Physics, Moscow, USSR;(2) Present address: National Physical Laboratory, Teddington, Middx., UK |
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Abstract: | The plastic instability approach has been applied to the tensile behaviour of a continuous fibre composite. It is shown that the combination of two components with different strengths and degrees of work-hardening produces a new material with a new degree of work-hardening, which may be determined by the present analysis. Expressions for the elongation at rupture and the strength of a composite have been obtained and the results of the calculation are compared with some experimental data.List of symbols
V
f
volume fraction of fibres in composite
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![epsi](/content/x0342764437433t4/xxlarge949.gif) , ![epsi](/content/x0342764437433t4/xxlarge949.gif) ,
true strain of fibre, matrix and composite
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s
true stress
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![sgr](/content/x0342764437433t4/xxlarge963.gif) , ![sgr](/content/x0342764437433t4/xxlarge963.gif) ,
nominal stress on fibre, matrix and composite
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* ,
* ,
*
critical stress of fibre, matrix and composite (ultimate tensile strength)
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* ,
*
critical strain of separate fibre and matrix
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*
critical strain of composite
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Q
external load
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A
cross-sectional area
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A
0
initial value of area |
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Keywords: | |
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