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Gas Turbine Fan Composite Containment Case And Methods Of Manufacture
Abstract: A containment case comprises a composite core with an inner and outer surface at least one puncture resistant layer bonded to the inner surface of the composite core and at least one energy capture layer bonded to the outer surface of the composite core. The puncture resistant layer having a high through thickness shear strength and high interlaminar toughness at impact. The energy capture layer having a high in plane tensile strength and low resistance to delamination and fiber matrix debonding at impact. A method of fabricating a containment case includes the steps of disposing one or more layers of a puncture resistant material on a layup mandrel disposing one more layers of a structural composite material on an exterior surface of the puncture resistant material disposing one or more layers of an energy capture material on an exterior surface of the structural material and curing a resin in the plurality of layers.
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