Numerical and experimental analysis of resin flow and cure in resin injection pultrusion (RIP)

Abstract

This work presents the results of modeling, numerical simulation, and experimental study of resin flow and heat transfer in the resin injection pultrusion (RIP) process. A control volume/finite element method (CV/FEM) was used to solve the flow governing equations, together with heat transfer and chemical reaction models. Resin viscosity, degree of cure, and fiber stack compressibility and permeability were measured in order to understand their influences on the process. An analytical flow model has also been develped based on the one‐dimensional flow approximation for the resin flow in the injection die. A high‐pressure small‐taper injection die was tested with different line speeds. Experimental data were used to verify the simulation results and the analytical solutions.

Iterative and transient numerical models for flow simulation of injection pultrusion

“…Most of the flow models developed, including those described in Refs. [4][5][6]8], have adopted the transient formulation similar to that for RTM simulation by which the full evolution of the resin flow front is modelled.…”

“…These include the experimental work conducted at the University of Mississippi [1], the University of Minnesota [2] and the University of Lowell [3] respectively, and the numerical flow models developed at Washington University [4,5], the Ohio State University [6,7] and the Cooperative Research Centre for Advanced Composite Structures (CRC-ACS) [8,9], respectively. Most of the flow models developed, including those described in Refs.…”

Effect of Resin Viscosity in Fiber Reinforcement Compaction in Resin Injection Pultrusion Process

“…Ding et al [19] investigated the resin flow and heat transfer in the resin injection pultrusion process. They conducted an experimental study as well as presented results from modeling and numerical simulation.…”

Pultrusion of a vertical axis wind turbine blade part-II: combining the manufacturing process simulation with a subsequent loading scenario

“…2 Flowchart of the iteration procedure to reach the steady state while solving the equation system for the temperature and the degree of cure force inside the heating die has also been analysed in [16][17][18]. In these studies [7][8][9][10][11][12][13][14][15][16][17][18], well known numerical methods such as the finite difference method (FDM), the finite volume method (FVM) or the finite element method (FEM) have been utilized. All these contributions have only been dealing mainly with thermal modelling thus being able to predict characteristic temperature and cure degree behaviours for pultrusion.…”

“…The main aim has been to understand the process by evaluating the development of the resin flow [7][8][9], temperature [10][11][12] and degree of cure profiles [13][14][15]. In addition, the frictional Fig.…”