Abstract: Process parameters have a significant influence on the quality of winding products made of thermoplastic composites. Based on laser-assisted automated fiber placement (LAFP) equipment for thermoplastic composites, winding samples were made of carbon fiber reinforced pol-yether ether ketone (AS4D/PEEK) high performance thermoplastic composites prepreg. According to response surface methodology, Box-Behnken Design method was used to design experiments. The influence of parameters such as heating zone temperature, winding speed and tension of fiber on inter laminar shear strength were analyzed. The regression model of each process parameter on inter laminar shear strength was established to optimize the inter laminar shear strength of composite rings. The accuracy and reliability of the model were validated by variance analysis (ANVOA) and experiment. The results show that the response value increases first and then decreases with the increase of parameters. Heating zone temperature and winding speed have significant effects on interlaminar shearstrength, while the fiber tension has some effects but not significant. Finally, the optimum process parameters were obtained: heating zone temperature 436.6 ℃, winding speed 81.3 mm/s, tension of fiber 201.9 N. Under the optimum combination of process parameters, winding product has best quality and the interlaminar shear strength is 52.8 MPa.
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2020, Vol. 34 
