Monitoring of cure strain on the interface between filament woundcomposites and aluminum plate using FBG

Resin mat rix composites are of ten used with metallic materials. The unidirectional laminate was fabricated by a filament wound method. The Fiber Bragg Grating ( FBG) was embedded between filament wound compositelamination and aluminum plate to monitor the interface performance of two different materials during the cureprocess , and it was compared with the result s f rom the internal composite monitoring. The result s show that thetemperature evolution of the composite cure process was monitored exactly by the Fiber Bragg Grating ; it was foundthat there is an obvious difference between the st rains before and af ter the curing process. The Fiber Bragg Gratingprovides a tool to monitor the cure process between two different materials and a new method to analyze the interfaceperformance.