Reinforced plastic continued methods

A summary of quasi-static delamination test methods for continuous-fibre, unidirectional FRP composites is given in Table 8.1. For mode 1, several standard test methods exist, namely, JIS K7086 ( Testing methods for interlaminar fracture toughness of carbon fibre reinforced plastics , 1993) this also includes a quasi-static mode 11 standard test, ASTM... 

Thermoforming is another mass production method normally associated with unreinforced or short fibre reinforced thermoplastics, but because of recent developments in reinforced plastics technology, discussed below, there is a greater availability of thermoplastics sheet reinforced by long or continuous glass fibres, so it may become more important for these materials as well. 

Stadtfeld, H. C., Erninger, M., Bickerton, S. and Advani, S. G., An experimental method to continuously measure permeability of fiber preforms as a function of fiber volume fraction . Journal of Reinforced Plastics Composites, 21, 879-899, 2002. Yenihnez, B., Senan, M. and Sozer, E. M., Variation of part thickness and compaction pressure in vacuum infusion process , Composites Science and Technology, 69(11-12), 1710-1719, 2009. 

Filament Winding A method of forming reinforced-plastic articles comprising winding continuous strands... 

Filament winding method of producing spherical or cylindrical reinforced plastics mouldings by winding continuous filament reinforcement onto a mandrel previously... 

Over the past few years, however, techniques have been developed to enable continuous reinforcement of thermoplastics. The simplest way is to put a cloth and a plastic sheet on top of each other in a heated press and to carry out impregnation under pressure. More difficult is the forming of an end-product from the sheet produced with conventional sheet-forming techniques the position of the fibres will be distorted in an unacceptable way. As in nearly all processing techniques, the modern finite-element methods with advanced computers are able to present solutions to this problem in principle they can predict the position of the fibres in the sheet-forming operation, so that optimum reinforcement is realised in the end product. 

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