Gm Global Technolgoy Operations, Inc.

Teijin Limited

Tomohiro Ryutani

Xiaosong Huang

William R Rodgers

Elisabeth Jane Berger

Selina X Zhao

Takashi Goto

Glen Novak

Methods of repairing defects in polymeric composite structures are provided. The methods include filling or bonding defects with a pre-polymerization solution and polymerizing the pre-polymerization solution in situ. Patches or support structures can be disposed at the site of the defect to increase the strength of the repair or to make the repair cosmetically pleasing, respectively. Such a method of repairing a defect may include applying a pre-polymer solution having a reinforcing material and a monomer to the defect in a polymeric composite structure; disposing a support structure on a surface of the polymeric composite structure over at least a portion of the defect having the applied pre-polymer solution; and polymerizing the monomer in the pre-polymer solution to form a repaired region in the polymeric composite structure including a polymer having the reinforcing material distributed therein.

In-situ polymerization of polyamides for composite part repair

Methods of repairing a defect in a polymeric composite structure are provided. The methods include disposing a patch over a defect in a polymeric composite structure; disposing a textured sheet over the polymeric patch, applying pressure to the polymeric patch and the textured sheet; and heating the polymeric patch. The textured sheet has a surface texture that is a negative of a surface texture of the polymeric composite structure.

Cosmetic repair of a thermoplastic carbon fiber composite

Growing community of inventors

Rochester, MI, United States of America

Tomohiro Ryutani