Prediction of warping in thermoplastic AFP-manufactured laminates through simulation and experimentation. (23rd February 2022)

• Record Type: Journal Article
• Authors: Fricke, Daniel; Raps, Lukas; Schiel, Ines
• Is Part Of: Advanced manufacturing. Volume 8:Number 1(2022)
• Page Start: 1
• Page End: 10
• Publication Date: 2022-02-23
• Subjects: AFP -- crystallization -- simulation -- digital twin; Composite materials -- Periodicals; Polymers -- Periodicals; 620.19205
• DOI: 10.1080/20550340.2021.2015212
• Languages: English
• ISSNs: 2055-0340

Abstract

Abstract: The thermoplastic automated fiber placement (T-AFP) process is a non-autoclave method for in situ consolidation of thermoplastic composite material on a piecewise constructed laminate. High thermal gradients and nonlinear material behavior, especially due to crystallization, make predictions of process-induced stress and warping difficult. This article describes a method for simulating parts manufactured by T-AFP using a detailed material model to capture the dynamic nature of the process. The material model is flexible and can be altered to describe different semi-crystalline matrices, in this study focusing on low-melt polyaryletherketone. Two laminate panels are simulated within this work and assess the impact of a heated tooling on overall part warping. Panel warping is validated by performing 3D-scans of T-AFP-manufactured laminates produced using the same parameters as the simulation. The results show a good match between numeric and experimental warping, especially for heated tools, thus, providing a useful method for predicting laminate warping and reducing the demand on manufacturing experimentation. Graphical Abstract: UF0001