Mechanical anisotropy and strength of uniaxially aligned fibre composites

3 Mechanical anisotropy and strength of uniaxially aligned fibre composites 

The theoretical considerations outlined above show that a uniaxially aligned fibre composite will show a high degree of mechanical anisotropy, i.e. G - 

Consider, for example, a glass-fibre/resin composite eontaining a 0.6 volume 

Although continuous filament composites are of considerable commercial importance, their fabrication is a rather eomplex process and a cheaper though mechanically inferior product is obtained by mixing short lengths of fibre with a thermoplastic pol3aner. 

A prime requirement is good adhesion between fibre and matrix, a condition that will be dependent on features such as chemical bonding and surface cleanliness, as well as mechanical factors. The ratio of surface area to fibre volume should be as high as possible. Considering cylinders of length / and radius r  

3 Mechanical Anisotropy and Strength of Uniaxially Aligned Fibre Composites 

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