Vacuum assisted resin transfer moulding

Figure 3.6 Vacuum-assisted resin transfer moulding (VARTM).

Abraham D, McIIhagger R. Vacuum assisted resin transfer moulding for high performance carbon fibre composites. In Proceedings of the 4th international conference on automated composites, ICAC95. Nottingham 1995. pp. 299—306. 

The vacuum assisted resin transfer moulding (VARTM) process is a variant of vacuum-infusion RTM in which one of the solid tool faces is replaced by a flexible polymeric film (Fig. 23.14). 

Vacuum infusion process (VIP), generally referred to as vacuum-assisted resin transfer moulding (VARTM), in which the resin is introduced into the mould and the preform at less than atmospheric pressure (i.e. a vacuum). 

On the other hand, if the process is force controlled, so that h is unknown at any instant, Eqs [11.1], [11.3], [11.7] and [11.8] are coupled. This is similar to the situation in resin infusion (RI) and the vacuum-assisted resin transfer moulding (VARTM) process. A convenient way to solve the system in this case is to use an iterative procedure, where h is first estimated, then adjusted until the calculated clamping force converges to the actual value. In the one-dimensional case, the problem can be reduced to a single ODE which can be solved numerically. ... 

Resin infusion (Rl) is also known as the vacuum assisted resin transfer moulding (VARTM) process, vacuum assisted resin infusion (VARI) and Seeman s composite resin infusion moulding process (SCRIMP). In this... 

Hsiao K-T, Devillard M, Advani SG. Simulation based flow distribution network optimization for vacuum assisted resin transfer moulding process. Modelling and Simulation in Materials, Science and Engineering, 2004 12 175-190. DOI 10.1088/0965-0393/12/3/S08. 

The clamp is manufactured via Vacuum Bag Resin Infusion, a process that is similar to Vacuum Assisted Resin Transfer Moulding, at room temperature. Machining and drilling are required to form the necessary grooves that house the seals and the holes for the fasteners, respectively. Alternative manufacturing approaches may be used, such as wet lay-up and resin transfer moulding. A typical ProAssure Clamp is shown in Figure 12.2. 

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