This study investigates the influence of stirring speeds variation (50 rpm, 100 and 150 rpm) on tensile strength fiberglass composite fabricated by Vacuum Assisted Resin Infusion (VARI) method. The VARI process involves injecting resin into dry fibers placed inside a plastic bag under low pressure, ensuring complete wetting fibers. research aims to identify optimal speed for production performi...

In Resin Transfer Molding (RTM), resin precursors of thermoset or, more recently, thermoplastic polymers are generally employed, raising issues related to the chemical reaction taking place during and after part processing. this study, already polymerized polyamide-6 with low melt-viscosity (~30 Pa·s at 280 °C), is injected pressure (<30 bar) in a custom-made mold, so as impregnate glass fabric...

Abstract: This paper presents the results of experimental determination of fiber bed permeability variation with porosity. Flow measurement experiments were designed to measure fiber mat permeability for fiber beds with various fiber volume fractions. Woven fiberglass, chopped fiberglass, and carbon fiber mats were used as reinforcements. The effects of reinforcement type and porosity on fiber ...

Abstract Real-time fault monitoring and control of the Vacuum Assisted Resin Transfer Moulding production process requires knowledge position epoxy flow-front inside mould. Therefore, a fast accurate tracking system is highly prized. Physics-informed grey-box models deliver good trade-off between high fidelity data-driven black-box for designing such system. In this paper, we propose stochastic...

Three-dimensional (3D) printing with continuous carbon-fiber-reinforced polymer (C-CFRP) composites is under increasing development, as it offers more versatility than traditional molding processes, such the out-of-autoclave-vacuum bag only (OOA-VBO) process. However, due to layer-by-layer deposition of materials, voids can form between layers and weaken some parts’ properties, interlaminar she...