Patent ID: 11884789
Assignee: THE BOEING COMPANY
Field: Other special machines (Mechanical engineering)
Classification: CPC C | IPC C

Claim 0:
1. A method of manufacturing a prepreg composition, comprising:, forming a bed of fibers;, contacting the fiber bed with a resin matrix; and, disposing a plurality of core/shell quantum dots on or in the resin matrix, wherein:
each quantum dot includes an inner core covered by an outer shell;
the inner core is such that when excited by light of a first wavelength the inner core emits a detectable luminescent signal at a second wavelength;
the outer shell is such that it blocks light of the first wavelength from reaching the inner core when the outer shell is intact; and
the outer shell is such that it degrades upon exposure to UV radiation such that a detection of the luminescent signal at the second wavelength indicates that the quantum dot has been exposed to UV radiation.