US 11,725,088 B2
Prepreg compositions, their manufacture, and determination of their suitability for use in composite structures
Morteza Safai, Newcastle, WA (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Sep. 30, 2014, as Appl. No. 14/503,201.
Prior Publication US 2016/0368170 A1, Dec. 22, 2016
Int. Cl. C08J 5/24 (2006.01)
CPC C08J 5/249 (2021.05) 19 Claims
OG exemplary drawing
 
1. A prepreg composition comprising:
a bed of fibers disposed in a resin matrix, wherein the bed of fibers and resin matrix are suitable for fabricating composite structures until the bed of fibers and resin matrix are exposed to a threshold amount of UV radiation; and
a plurality of core/shell quantum dots disposed within the resin matrix, an inner core of each quantum dot being configured to emit a luminescent signal when excited by light, and an outer shell being configured to block light from reaching the inner core when the outer shell is intact;
wherein the plurality of core/shell quantum dots is configured such that exposure of the bed of fibers and resin matrix to the threshold amount of UV radiation results in emission of the luminescent signal when the plurality of core/shell quantum dots is illuminated.