DAMAGE MONITORING OF CARBON FIBER REINFORCED PLASTIC π ADHESIVE JOINT BASED ON FIBER BRAGG GRATING

Abstract

Abstract: Aiming at the damage monitoring of carbon fiber reinforced plastic π adhesive joint under tensile load, a finite element model of carbon fiber reinforced plastic π adhesive joint is established, and the failure location of the joint is predicted. The mapping relationship between damage evolution and stress distribution is also analyzed. Then, the reflection spectrum of the fiber Bragg grating at the damage location is calculated based on the transfer matrix method, and the effectiveness of the reflection spectrum calculation is verified by the experiment. Finally, the stress distribution is reconstructed by genetic algorithm, and the stress distribution form of the damaged part is obtained, which provides a new method for the damage monitoring of carbon fiber reinforced plastic π adhesive joint in engineering applications.

Key words: carbon fiber reinforced plastic, fiber bragg grating, damage monitoring, genetic algorithm

CLC Number:

TB332

JIANG Feng,HU Ye-fa,SONG Chun-sheng. DAMAGE MONITORING OF CARBON FIBER REINFORCED PLASTIC π ADHESIVE JOINT BASED ON FIBER BRAGG GRATING[J]. Fiber Reinforced Plastics/Composites, 2018, 0(7): 19-25.

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