Homogenizing process for fiber-wrapped structural composites

Details Homogenizing process for fiber-wrapped structural composites Homogenizing process for fiber-wrapped structural composites

B - Operations, Transporting

29

C

B29C 71/02 (2006.01) B29C 70/56 (2006.01) F17C 1/16 (2006.01)

Patent

CA 2269976

The invention relates to a process for the manufacture of fibre- reinforced pressure vessels and the product produced therefrom. A vessel liner is wrapped with resin-impregnated fibres and cured according to conventional technology. The cured, fibre-wrapped liner is then subjected to elevated temperature and pressure over time. The elevation in temperature allows the resin to soften. The increased pressure imparts a tensile load in the fibres. The tensile load causes fibres to stretch and straighten in the resin. After cooling and when pressurised for duty, the now straightened fibres are capable of responding immediately to the tensile load and the burst strength of the vessel is increased as a result. The process can be combined with autofrettage in series or simultaneously to achieve even greater final strength.

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