Method of manufacturing and structure of prestressed composite reinforcements

摘要

In this invention a method of manufacturing and structure of prestressed composite reinforcements for cylindrical liners is presented. The method relies on creating deep precompression in the liner compensated by according pretension in the reinforcement. This method allows efficient use of mechanical properties of material of the liner and reinforcement and can provide a substantial mass reduction of the overall component.

主权项

1. A method of manufacturing a reinforcement bandage over a cylindrical liner with either a fully cured thermoset fiber reinforced tape or tow, or a thermoplast fiber reinforced tape or tow, or a fiber reinforced metal matrix tape or tow, or a metal wire or with any combination of these tapes or tows or wires comprising the combination of steps:
a) installation of side elements; b) fixation of the beginning of the composite tape or tow or wire; c) winding with the composite tape or tow or wire under pretension; d) gradually increasing the pretension in the tape or tow or wire up to at least 10% of its instantaneous tensile strength; e) pouring a liquid bonding material on the bandage during winding; f) reducing the pretension in the last turns below 98% of the instantaneous tensile strength of the tape or tow or wire; g) fixation of the composite tape or tow or wire without loss of pretension upon completion of the winding; h) cutting off the composite tape or tow or wire; i) winding an external layer.