Skin damage repair method for aluminum alloy skin foam sandwich part

The invention belongs to the technical field of aerial foam sandwich part manufacturing and relates to a skin damage off-site repair method for an aluminum alloy skin foam sandwich part.The method is mainly used for maintaining skin damage faults of the aluminum alloy skin foam sandwich part.According to a prepared curing adhesive, the weight ratio of E-51 epoxy resin, quartz powder, m-xylylenediamine and 201 polysulfide rubber in the curing adhesive is 100:20:22:50.Besides, according to the shape of a damage range, a set of high-strength glass cloth patches identical in shape and different in size are cut, and the edge distance of the patches adjacent in size in each set is 25 mm.The patches are laid sequentially in the damaged position from small to large, the curing adhesive is evenly coated between the patches, the number of the patches is determined by the thickness of aluminum alloy skin, and it is guaranteed that a repaired damage area is flush with surrounding skin.