The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2014
Filed:
Feb. 11, 2011
Alison J. Mcmillan, Uttoxeter, GB;
Alison J. McMillan, Uttoxeter, GB;
Rolls-Royce PLC, London, GB;
Abstract
A composite material comprises plies, which may be prepregs. Film elementsare provided between at least two adjacent ones of the plies. The film elements are made from a release material which inhibits adhesion between regions of the resin on opposite sides of the respective film elements, and are randomly distributed. The film elementsprovide delamination sites within the component. The component may be a test piece for assessing the delamination behavior of the material. Alternatively, the delamination behavior caused by the film elementsmay have a useful purpose, for example to control regions of a component in which delamination occurs following events such as a bird strike on a fan blade of a gas turbine engine.