The development of a cascaded feedback control strategy for a vapor-phase axial deposition (VAD) process is investigated in this paper. VAD is a widely used process in the creation of high purity glass for optical fiber. In previous work a soot tip surface temperature controller was developed for the VAD process to reduce the effects of core soot temperature variation on deposition, leading to ...

Abstract Resin infusion is a pressure-gradient-driven composite manufacturing process in which the liquid resin driven to flow through and fill void space of porous preform prior heat treatment for solidification. It usually great challenge design both system meeting requirements, especially large-scale components aircraft wind turbine blades. Aiming at addressing key concerns about fronts air ...

This work focuses on the development of a numerical mold filling simulation for rotational molding process. In process, dry fiber preform is placed in and impregnated with thermoset matrix under rotation. Additionally, metallic load introduction elements can be inserted into joined co-curing or form-fit, resulting hybrid drive shafts tie rods. The model used to simulate impregnation preform. Ba...

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...

A common braiding machine cannot perform continuous using closed annular axis mandrels. To solve this problem, a modified vertical was made to braid composite preforms with irregular cross-section The finite element method used simulate the process, and an efficient also derived predict angles. results show that predicted angles are basically consistent actual angles, at distinctive locations o...