Sacrificial energy absorbing structure
AssigneeCellbond Composites Limited
InventorsMichael Ashmead, Paul Blauberger, Werner Lehr, Ralf Passman
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Abstract
The invention thus provides a method of making a foam-filled composite matrix having a cellular core, and the composite matrix of the method, e.g. for use as sacrificial energy absorbing structures particularly for the passenger compartments of vehicles, e.g. motor vehicles. Thus the structures may be used in head linings in automobiles and as linings and even seats in vehicles such as aircraft. Additionally the structures may form crash padding in crash helmets and body armour.
Claims12
A method of making crash padding for use in vehicles for personal protection, said method comprising the steps of
- providing a deformable cellular matrix comprising a plurality of open-ended tubular cells,
- providing a fibrous mat over the ends of the cells,
- introducing into the cells of the matrix a resilient foam-forming material having a lower crush strength than the deformable cellular matrix so as not to contribute significantly to the overall energy-absorbing capability of the crash padding;
- allowing or causing the foam-forming material to foam and fill the cells and impregnate the mat, and
- allowing or causing the foam to cure or set to form a resilient foam.
Dependencies are inferred from the claim text.