Optical fiber sensing method for the in-situ cure monitoring of composite materials

摘要

An optical fiber sensing scheme used for cure monitoring during composite curing cycle is presented. The sensing mechanism is based on the change in refractive index during cure process of the composite. An optical fiber sensor embedded in the composite was used for detecting the variation of the refractive index of cure resin in composite materials during its curing cycle. A carbon fiber/epoxy composite laminate was used for experiments in this paper.