Abstract:

The temperature and degree of cure of glass fiber reinforced plastic (GFRP) are coupled during the pultrusion process. The unsteady temperature field and curing models were established on the basis of heat transferring and resin curing mechanism. The kinetic parameters of polymer matrix used for simulation were acquired from the differential scanning calorimeter scans. The finite element method and finite difference method were implemented to solve the coupling problem between temperature field and curing models; and the numerical simulation of temperature and degree of cure of GFRP was realized on the basis of ANSYS. The fiber Bragg grating sensor, encapsulated in a metal capillary, was adopted to monitor the centerline temperature of GFRP; and the final degree of cure was measured by Sorbitic extraction. It shows that the simulative results are in good agreement with the experimental ones. The simulative way will make the process optimization more feasible and convenient.

Key words:

text-indent: -48.35pt, mso-outline-level: 1, mso-char-indent-count: -5.37">glass fiber reinforced plastic, pultrusion, numerical simulation, unsteady temperature field, fiber Bragg grating sensor