Composite motor vehicle bumper beam

Details Composite motor vehicle bumper beam Composite motor vehicle bumper beam

1996-04-10

1998-09-08

Weisberger, Richard

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Coated or impregnated inorganic fiber fabric

442180, 442182, 442245, 442293, B60R 1932, B60R 1908

Patent

active

058045112

ABSTRACT:
A structural reaction injection molded motor vehicle bumper beam comprises a preform formed of layers of interlaced glass fibers and chopped glass fibers wherein most of the interlaced fibers are oriented longitudinally of the bumper beam. A two-component, non-filled reaction injection molding polymeric/pure polyurethane based resin with a neat elongation in excess of about 50% bonds the fiberglass layers together in a composite bumper beam structure wherein the fiberglass provides substantial strength and stiffness and the highly compliant resin allows extensive beam deflection without catastrophic cracking to enable the bumper beam without other assistance to absorb sufficient energy in repeated impacts to meet in-service requirements.

REFERENCES:
patent: 4525005 (1985-06-01), Prochaska et al.
patent: 5277462 (1994-01-01), Verzelli et al.
Oeitel, G; Polyurethane Handbook, 2d Edition, 1993, pp. 346-347.

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