Fabrication method of composite components and thus obtained components

摘要

During the cooking of a composite component including layers of fibers embedded into a matrix, a superficial pressure is exerted. This superficial pressure generates a deformation that causes local contacts of fibers of at least two layers without damaging these fibers. As a result, when an electrical current is applied on a side of the composite component, such as during a lightning strike or a short circuit, the added local contacts enable the electric current to flow along multiple fibers in the composite component, thereby avoiding significant spikes in temperature.

主权项

1. A method for manufacturing a composite component comprising superimposed layers of electrically conductive fibers embedded into an electrically insulating matrix the method comprising:
(A) forming an assembly comprising superimposed layers of electrically conductive fibers and separated by a resin intended for making up the matrix; (B) achieving a vacuum around the assembly; (C) submitting the assembly in vacuum to a compression and a cooking, wherein at least during the cooking, a superficial pressure is exerted on the assembly generating a deformation that causes local contacts of fibers of at least two superimposed layers, without damaging the fibers; and (D) removing the pressure plate following step (C), wherein before steps (B) and (C), the method includes applying a pressure plate, the pressure plate provided with an uneven surface on a side of the assembly so as to create the superficial pressure, and wherein during the steps (B) and (C), the method includes maintaining the pressure plate in position.