Temperature Field in the Heat Transfer Process of PEEK Thermoplastic Composite Fiber Placement

Abstract

Under the effect of different process parameters, the temperature field inside the thermoplastic fiber is very complex and directly affects the fusion quality between the resins. Considering the heat transfer behavior of thermoplastic fiber polyether ether ketone (PEEK) as the research object, a mathematical model of heat transfer in the thermoplastic composite fiber placement with the relevant boundary conditions was established. Ansys Parametric Design Language (APDL) was used to generate the finite element model and simulate the transient process, not only to explore the influence of various process parameters on the temperature field, but also to build an online temperature field measurement system. The influence rules of placement process parameters and mold initial temperature with respect to the temperature field in the first layer were obtained. Combining the relationship between heating temperature and placement speed, when the first layer was laid, the placement process temperature could be quickly reached by low speed and high temperature. The temperature data were collected by the online detection system. Compared with the temperature data from the simulation, the error was below 8%, which verified the correctness of the heat transfer model. The academic research results will lay a theoretical foundation for the thermoplastic fiber placement.

Review: Filament Winding and Automated Fiber Placement with In Situ Consolidation for Fiber Reinforced Thermoplastic Polymer Composites

“…The authors suggested a line speed of 5 mm/s, hot gas temperature of 750 • C and tool temperature of 145 • C for the first layer. The suggested parameters were similar to those recommended by Cao et al [67]. In addition, Liu et al also recommended using a Teflon tape to protect the rubber compaction roller for the AFP process [66].…”

“…For the modeling of ISC using forced convection heaters such as hot gas torch, many researchers used constant heat coefficient values (h heater ) to model the heat transfer between the heater and the FRTP material [66][67][68]. Tafreshi et al discussed the determination of the h heater value for ISC using hot gas torch using two approaches, namely (i) calculating h heater from the Nusselt number and the Reynold number based on impinging jet theories, and (ii) obtaining h heater by considering the energy absorbed by the material and then fitting numerical calculations to experimental data [45].…”

“…Cao et al studied the heat transfer processes in AFP with ISC using hot gas torch for carbon/PEEK by conducting FE simulations and experiments for verification [67]. In particular, the effect of tool temperature on the consolidation of the first layer was investigated.…”

Optimization of the Laser Drilling Processing Parameters for Carbon Steel Based on Multi-Physics Simulation

“…In this study, a simulation of laser processing drilling was conducted to minimize slag and splash formation. The temperature distribution of the carbon steel during laser processing was investigated by varying the processing parameters and the heat transfer mechanisms during laser drilling, and the impact of the temperature distribution and various laser processing parameters on the laser drilling process was also assessed [17,18]. This work can help avoid excessive slag and splash in practical production scenarios, providing valuable guidance on the application of laser drilling processing techniques.…”