Hybridization is an important application in obtaining the multi-functionality to combine best properties of each reinforcing element makes up composite. In this study, hybrid composites and uniform were fabricated using carbon, aramid, intraply carbon/aramid weaves with two different production methods (vacuum-assisted resin transfer molding process vacuum bagging process). The mechanical prod...

The resin flow behavior in the vacuum assisted resin infusion molding process (VARI) of foam sandwich composites was studied by both visualization flow experiments and computer simulation. Both experimental and simulation results show that: the distribution medium (DM) leads to a shorter molding filling time in grooved foam sandwich composites via the VARI process, and the mold filling time is ...

The compaction behavior of dry reinforcements has been the subject of much previous research work. However the research was mainly carried out for the Resin Transfer Molding (RTM) process where the compaction pressure goes up to 1 MPa, and higher compaction rates are involved. In the vacuum infusion molding process, the available compaction pressure never exceeds 1 bar. Accordingly, the analyti...

Vacuum assisted resin transfer molding (VARTM) is a fiber reinforced composite (FRC) making process in which impregnated to fabric by application of vacuum. This also known as vacuum infusion process. The critical issue VARTM void generation. Voids form due variety reasons, most can be avoided. degassing one the solutions will reduce air entrapped inside during impregnation. In this work six la...

A wood-based prepreg was formed using vacuum assisted resin transfer molding (VARTM) and a low viscosity thermoplastic resin. Wood strands were assembled to make porous mat for injection. The filled most of the cavities inside wood cells resulting in void volume fraction 7%. Young’s modulus strength saturated 38% 124% higher, respectively, than those prior infusion. Flat laminates produced by t...

In recent years, the polyurethane (PU) was widely investigated and applied in pavement engineering as a sustainable binder to develop pavment materials with superior mechanical functional properties. However, two-component PU binders exhibit rapid curing thus it is difficult control material workability through paving compaction. Hence, precast mehtod concept has been proposed obtain good well ...

The curing kinetics and viscosity of an epoxy resin system, SI-ZG-5A, have been characterized for application in the vacuum assisted resin transfer molding (VARTM) process. Impregnation of a typical carbon fiber perform provided the test bed for the characterization. Process simulations were carried out using the process model, COMPRO [8], to examine heat transfer and curing kinetics for a full...