The present disclosure relates to a method of repairing a damaged portion of a perforated skin of a panel using a doubler made of composite material which is designed to be applied to the damaged portion of the perforated skin. The method includes at least one step in which a sealing film is applied to the damaged portion of the perforated skin in order to temporarily seal the perforations in the skin, and a step in which the doubler is produced over the previously deposited sealing film.

An indication device for monitoring the structural integrity of a repair location on a laminate structure, produced from a composite material, of a part of an aircraft outer skin is specified. The indication device has at least one elongate, thin indicator strip. The indicator strip is detachably applied to the outer layer of the laminate structure in the immediate vicinity of the repair location. The indicator strip is designed to indicate a predefined residual strength of an adhesive joint of a repair patch to the surrounding composite material.

An indication device for monitoring the structural integrity of a repair location on a laminate structure, produced from a composite material, of a part of an aircraft outer skin is specified. The indication device has at least one elongate, thin indicator strip. The indicator strip is detachably applied to the outer layer of the laminate structure in the immediate vicinity of the repair location. The indicator strip is designed to indicate a predefined residual strength of an adhesive joint of a repair patch to the surrounding composite material.

A method is provided for repairing a component of an item of rotational equipment, where the component includes a coating and a component body, and where the coating is on the component body and includes a defect. The method includes steps of: (a) removing a portion of the coating from the component body thereby forming a coating aperture, the removed portion of the coating including the defect, and the portion of the coating is removed such that the coating aperture has a coating aperture configuration which substantially matches a first patch configuration of a first coating patch; (b) preparing the component at the coating aperture to receive the first coating patch, (c) disposing the first coating patch within the coating aperture; and (d) attaching the first coating patch to the component body.

Systems and methods for reinforcing physical structures with composite reinforcement systems are disclosed herein. According to aspects of the present disclosure, a composite reinforcement system includes a carrier formed of a plurality of fibers and a blend of at least two reagents impregnated within the carrier. The at least two reagents are chemically configured to react to form a moisture-curable prepolymer. One reagent of the at least two reagents is an isocyanate, and another reagent of the at least two reagents is an aromatic-group-containing polyol.

Systems and methods for reinforcing physical structures with composite reinforcement systems are disclosed herein. According to aspects of the present disclosure, a composite reinforcement system includes a carrier formed of a plurality of fibers and a blend of at least two reagents impregnated within the carrier. The at least two reagents are chemically configured to react to form a moisture-curable prepolymer. One reagent of the at least two reagents is an isocyanate, and another reagent of the at least two reagents is an aromatic-group-containing polyol.

The invention relates to a method for repairing a damaged point of a fiber composite component which is formed from at least one fiber ply of a fiber material of a fiber composite substance and a matrix material of the fiber composite substance, in which matrix material the fiber material is embedded, wherein the method comprises the following steps: removing the damaged point from the fiber composite component and producing a repair cavity in the fiber composite component, introducing at least one reparative fiber ply of a fiber material into the repair cavity produced in the fiber composite component, and curing the matrix material, in which the fiber material of the reparative fiber ply is embedded, after introducing the reparative fiber ply into the repair cavity of the fiber composite component,

wherein at least one reparative fiber ply having a ply thickness that is smaller than the ply thickness of the fiber plies of the rest of the fiber composite component is introduced into the repair cavity.

The invention relates to a method for repairing a damaged point of a fiber composite component which is formed from at least one fiber ply of a fiber material of a fiber composite substance and a matrix material of the fiber composite substance, in which matrix material the fiber material is embedded, wherein the method comprises the following steps: removing the damaged point from the fiber composite component and producing a repair cavity in the fiber composite component, introducing at least one reparative fiber ply of a fiber material into the repair cavity produced in the fiber composite component, and curing the matrix material, in which the fiber material of the reparative fiber ply is embedded, after introducing the reparative fiber ply into the repair cavity of the fiber composite component,

wherein at least one reparative fiber ply having a ply thickness that is smaller than the ply thickness of the fiber plies of the rest of the fiber composite component is introduced into the repair cavity.

A repair wrap for repairing or strengthening an item. The repair wrap includes a fabric, where the fabric includes one or more fibers. The repair wrap also includes a film disposed laterally within the fabric. The repair wrap further includes a hardening material disposed in the fabric. The fabric is configured to be wrapped around a portion of an item. Curing the hardening material is configured to form a shell about the portion of the item.

A repair wrap for repairing or strengthening an item. The repair wrap includes a fabric, where the fabric includes one or more fibers. The repair wrap also includes a film disposed laterally within the fabric. The repair wrap further includes a hardening material disposed in the fabric. The fabric is configured to be wrapped around a portion of an item. Curing the hardening material is configured to form a shell about the portion of the item.