Patent ID: 11890849
Assignee: THE BOEING COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 6:
7. A method for initiating separation of a first layer from a second layer of a multilayer composite structure having a free edge, wherein one of the first layer and the second layer comprises a composite ply and another of the first layer and the second layer comprises a backing film connected to the composite ply, the method comprising:
securing the multilayer composite structure to a work surface;
cutting a bulk sheet of multilayer composite material to yield the multilayer composite structure and a peripheral portion separated from the multilayer composite structure by a cut line; and
applying cyclic pressure to at least a portion of the free edge of the multilayer composite structure while engaging the multilayer composite structure with a vibrating cantilever beam,
wherein the applying the cyclic pressure comprises defining a pressure chamber such that the portion of the free edge of the multilayer composite structure is received within a pressure chamber, and
wherein the pressure chamber is at least partially defined by sealingly engaging a pressure housing with the multilayer composite structure.