The effect of transverse shear on the longitudinal compressive strength of fibre composites |
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| Authors: | Tsu-Wei Chou A Kelly |
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| Affiliation: | (1) Mechanical and Aerospace Engineering Department, University of Delaware, Newark, Delaware, USA;(2) Vice-Chancellor's Office, University of Surrey, Guildford, UK |
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| Abstract: | Experimental work on glass/epoxy composites shows that the compressive strength is sensitive to the method of gripping, that
the failure mode in compression varies with fibre volume fraction, and that bending of the specimen may occur as a result
of misalignment. Some aspects of these observations are examined. The critical Euler buckling load is significantly reduced
if transverse shear occurs. The buckling load depends on specimen dimensions and a good deal of scatter results from this.
The predicted compressive strength taking into account the effect of transverse shear and specimen geometry includes the experimental
results within a wide scatter band. The present analysis based upon the macro-buckling of the specimen, reproduces some predictions
of compressive strength based upon the micro-buckling of fibres. |
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