초록 ▼

Structures, such as pressure vessels or pipes, for the storage and transportation of fluids under pressure are wrapped with a composite material including a high-strength unidirectional filament material in a matrix of a flexibilized isophthalic polyester resin which has an elongation at least equal

Structures, such as pressure vessels or pipes, for the storage and transportation of fluids under pressure are wrapped with a composite material including a high-strength unidirectional filament material in a matrix of a flexibilized isophthalic polyester resin which has an elongation at least equal to the elongation of the material of the structure. The index of refraction of the resin is matched to the index of refraction of the filament material so that the pressure vessel is visible through the wrapping. The resin discolors when exposed to a heat above which the material of the structure weakens, thus acting as an indicator that the structure is unsuitable for use.

대표청구항 ▼

A reinforced structure for containing fluid under pressure, comprising: an elongated hollow member and a band of continuous, high tensile strength fibers in a resin matrix engaging and encompassing the member, wherein the fibers have a predetermined index of refraction and the resin matrix has an in

A reinforced structure for containing fluid under pressure, comprising: an elongated hollow member and a band of continuous, high tensile strength fibers in a resin matrix engaging and encompassing the member, wherein the fibers have a predetermined index of refraction and the resin matrix has an index of refraction substantially equal to the index of refraction of the fibers, whereby the elongated hollow member is visible through the band. A structure for containing fluid under pressure comprising: an elongated hollow member and means for reinforcing said elongated hollow member, said reinforcing means comprising a reinforcing band extending around and in engagement with said elongated hollow member and including a plurality of high tensile strength fibers and a matrix encapsulating said fibers, said matrix comprising a heat indicating material responsive, by changing color, to a temperature above which the strength of said hollow member is substantially weakened, thereby indicating that the structure is unsuitable for use.