US 12,435,193 B2
Repair shape and technique for composite laminates
Ajit D. Kelkar, Greensboro, NC (US); Mohammad B. Uddin, Greensboro, NC (US); and Shashwata Chakraborty, Greensboro, NC (US)
Assigned to North Carolina Agricultural and Technical State University, Greensboro, NC (US)
Filed by North Carolina Agricultural and Technical State University, Greensboro, NC (US)
Filed on May 23, 2022, as Appl. No. 17/751,351.
Claims priority of provisional application 63/191,885, filed on May 21, 2021.
Prior Publication US 2022/0372237 A1, Nov. 24, 2022
Int. Cl. C08J 5/24 (2006.01); C08J 5/12 (2006.01)
CPC C08J 5/243 (2021.05) [C08J 5/124 (2013.01); C08J 2363/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of repairing a damaged composite, the method comprising:
(a) providing a composite comprising a polymeric matrix and one or more layers of fibers, wherein said composite has a damaged area; and
(b) replacing the damaged area of said composite with an insert comprising a core geometry and radial projections, wherein the insert is prepared using at least one of a heat vacuum assisted resin transfer molding process (HVARTM) or a prepreg and wherein the replacing comprises cutting around the damaged area to create a void in the composite, wherein the void has a shape corresponding to the insert; inserting the insert into the void; applying a resin; and curing the resin.