By E.A. Easterling

Practically all activities have benefited in a few the most important method via the creation of artificial fabrics. complex fabrics in activities gear is a readable creation to those new fabrics. The ebook examines the function performed via complex fabrics within the layout, functionality, visual appeal and defense elements of assorted gear and shows most likely destiny developments.

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Hi-Tec's ABC (Air Ball Concept) uses a similar technique. 11 Cross-section from a 'Nike Air' shoe. 12 Measurements of 'energy return' of various sports shoes (Le. percentage of work of deformation got out relative to that put in) using the method shown. The general conclusion is that there is relatively little difference between shoes. After R. M. Alexander and M. , New Scientist, 15 July. THE OUTSOLE L -_ __ _ _ __ __ __ __ _ _ __ __ __ __ __ __ __ _ _ __ __ __ __ __ _ _ __ _ II ~ designs claim that energy-return systems are being developed at the expense of safety and stability, and with scant thought of cost to the consumer.

6 This illustration shows that a growing crack in a fibre composite is effectively stopped by the fibres. The secondary cracks along the fibres are relatively harmless. _ _~ feature brings out an important safety aspect too. For example, it is now standard competition practice to use carbon-fibrereinforced epoxy squash rackets, instead of ones made from wood, since accidental smashes of the racket against the squash court wall can well cause injury from flying splinters. Composite rackets are built to absorb such impacts and thereby avoid splintering altogether.

If highly directional properties are required, the preform can be made up of stacks of weaves of parallel fibres. 9). Indeed the whole art of composites strives to emulate the ultimate perfection of growth and form that is nature. The epoxy (with catalyst) is finally impregnated into a preform, and the whole is moulded and baked in a large pressure cooker. flW(1Al. WEJ\vE THREEOIMENSIONAl. CAl CONSTRUCTION TRIAXIAl \YEAVE fHRH OIMfNSIONAlBRAIOI KNII THREE DIME IONAI. ORTl-lOCoONAI. 8 Examples of different forms of fibre weaves.

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