초록 ▼

A multi-fabric layer, resin matrix laminated composite tube is disclosed having an end portion adapted for crush initiation by the provision of slits in the fabric of at least the innermost fabric layers of said tube, the lengths of said slits preferably decreasing in progressively outer fabric laye

A multi-fabric layer, resin matrix laminated composite tube is disclosed having an end portion adapted for crush initiation by the provision of slits in the fabric of at least the innermost fabric layers of said tube, the lengths of said slits preferably decreasing in progressively outer fabric layers of the laminated material.

대표청구항 ▼

[ I claim:] [1.] A composite tube comprising a plurality of layers of reinforcing fabric, each layer being embedded in a polymeric resin matrix, said tube having a cylindrical cross section comprising successively innermost to outermost layers of said fabric, a longitudinal axis and an end being ada

[ I claim:] [1.] A composite tube comprising a plurality of layers of reinforcing fabric, each layer being embedded in a polymeric resin matrix, said tube having a cylindrical cross section comprising successively innermost to outermost layers of said fabric, a longitudinal axis and an end being adapted to receive a crushing force directed along said axis, said tube comprising at least two fabric layers that each have a plurality of slits in said fabric spaced around the cross section and extending from said end in the respective layer parallel to said axis.