Winhard, J.; Nestler, D.; Kroll, L. Effects of Process Parameters in Thermoforming of Unidirectional Fibre-Reinforced Thermoplastics. Polymers2024, 16, 221.
Winhard, J.; Nestler, D.; Kroll, L. Effects of Process Parameters in Thermoforming of Unidirectional Fibre-Reinforced Thermoplastics. Polymers 2024, 16, 221.
Winhard, J.; Nestler, D.; Kroll, L. Effects of Process Parameters in Thermoforming of Unidirectional Fibre-Reinforced Thermoplastics. Polymers2024, 16, 221.
Winhard, J.; Nestler, D.; Kroll, L. Effects of Process Parameters in Thermoforming of Unidirectional Fibre-Reinforced Thermoplastics. Polymers 2024, 16, 221.
Abstract
Process induced defects during thermoforming are widespread problems in laminate manufacturing. The aim of this study is to describe the effects of holding time and pressure on several properties of the manufactured laminate. A design of experiments is performed, followed by an analysis of variance to examine significant effects. Subsequently, a regression model is created to predict the laminate’s properties, which is also validated. The highest values of tensile strength and elongation at break are found for low settings of holding time and pressure. The fibre volume fraction is not affected by the process parameters. As holding time and pressure increase, significant fibre misalignment takes place, leading to a decrease of the mechanical properties. The regression model corresponds well with the validation and should be extended with further variables in subsequent studies.
Copyright:
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