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Patent Searching and Data


Title:
A METALLIC FOAM MATERIAL
Document Type and Number:
WIPO Patent Application WO/2013/102558
Kind Code:
A3
Abstract:
The invention provides a metallic foam material with better mechanical properties than known foamed materials, and a method of making such a material. Although known foamed metals are light in weight, and sandwich structures formed of such materials can be formed into structural components, the tendency for the structure to crush and fracture under compressive loading, with consequent crack propagation, limits their use in applications in which the integrity of the component is important. The invention addresses this problem by providing a fibre-reinforced foam that combines the tensile strength of a high strength fibre such as carbon fibres with the impact resistance (through crushing and deformation) of metallic foam. The metal foam imparts a greater strength to the carbon-fibre-reinforced plastics (CFRP) part of the structure than it would have by itself. Under tensile loads, the fibre reinforcement gives the metallic foam enhanced strength and low creep which it would not have on its own.

Inventors:
CARE IAN (GB)
Application Number:
EP2012/075975
Publication Date:
October 17, 2013
Filing Date:
December 18, 2012
Export Citation:
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Assignee:
ROLLS ROYCE PLC (GB)
International Classes:
B29C43/18; B29C43/28; C22C47/06; C22C47/08; C22C49/14; C25D1/00; C25D5/54; C25D7/04
Foreign References:
US3940262A1976-02-24
US20020172817A12002-11-21
US4121992A1978-10-24
US4496627A1985-01-29
US4579632A1986-04-01
Attorney, Agent or Firm:
GEE, Philip et al. (Filton, Bristol South Gloucestershire BS34 7QE, GB)
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