Patent ID: 8802213
Filing Date: 2014-08-12
Classification: B29C,B29L,B32B,Y02T,Y10T

Abstract:
1. A patch for reworking an inconsistent area in a composite structure, comprising: a composite laminate patch adapted to cover the inconsistent area and including a plurality of composite plies having a tapered cross section, the composite laminate patch including at least: a first bond joint control region, and a second bond joint control region configured substantially surrounding the first bond joint control region and comprising a differing fracture toughness than the first bond joint control region, such that a first strain energy release rate of the first bond joint control region is distinct from a second strain energy release rate of the second bond joint control region, and such that the first bond joint control region and the second bond joint control region each comprise different resistances to delamination, each bond joint control region configured to present an indication of a condition of the composite laminate patch and comprising a corresponding first ply that is bonded, by a corresponding tailored adhesive, to a corresponding surface comprising at least one of: a second ply, and the composite structure.