Resin Transfer Molding (RTM) is a polymer composite processing technique widely used in the aeronautics and automotive sectors. This paper describes the numerical simulation of the RTM process where Darcy’s law was used for the mathematical formulation of the problem. A control volume finite element method was used for the determination of pressure gradients inside the mold, and a geometric rec...

OBJECTIVE Acrylic resin denture bases undergo dimensional changes during polymerization. Injection molding techniques are reported to reduce these changes and thereby improve physical properties of denture bases. The aim of this study was to compare dimensional changes of specimens processed by conventional and injection-molding techniques. MATERIALS AND METHODS SR-Ivocap Triplex Hot resin wa...

The permeability of the preform composite materials used in liquid molding processes such as resin transfer molding and structural reaction injection molding is a complex function of weave pattern and packing characteristics. The development of tools for predicting permeability as a function of these parameters is of great industrial importance. Such capability would speed process design and op...

As technology advances and people's needs rise, the amount of waste produced rises in tandem with increased productivity every industry. In this study, mechanical properties hybrid composite structures made from recycled textile (denim waste, human hair, pantyhose waste) are compared to those an E-glass plain-woven fabric reinforced structure (Charpy impact strength, drop-weight tensile flexura...

Experimental and theoretical approaches are studied via the first-ply failure strength on anti-symmetrically laminated composite elevated floor plates with various length-to-depth ratios, aspect ratios, and optimal fibre orientations subjected to central point loads. Optimal angle-ply orientations of anti-symmetric [θ/ − θ . . .]−S laminated composite plates designed for maximum stiffness were ...

In this study, three novel thermoplastic impregnation processes were analyzed towards automotive applications. The first process is compression resin transfer molding in which a glass fiber mat impregnated through thickness by polymer. second melt-thermoplastic Resin Transfer Molding (RTM) the fibers are plane with help of spacer. third process, stamp forming hybrid bicomponent fibers, coats in...