Faculty of Engineering and Natural Sciences
FENS MAT 552 SEMINARS
Issues and Automation of Resin Transfer Molding (RTM) and Vacuum
Infusion (VI) Processes
Koç University, Department of Mechanical Engineering, Sariyer 34450, Istanbul, Turkey
In this talk, I will go over the major issues of two separate manufacturing processes in composites: (i) Resin Transfer Molding (RTM) and (ii) Vacuuum Infusion (VI). Control of both processes is achieved by integrating the conventional experimental setups (mold and injection system) with embedded sensors, mold filling simulations, and a control system.
Automation of the RTM process consists of many steps to be achieved. Sensor data evaluation is one of the objectives in the automation of the RTM process. In-situ sensor data are compared with off-line disturbance scenarios in order to predict if there is going to be a macro-size void inside the composite part. If necessary, control actions are made to control and hence correct the flow propagation. This study focuses on sensor data evaluation of point-voltage sensors in RTM process.
In the VI process, the thickness of a composite part changes with the effect of resin flow and compaction pressure. Some control actions are taken by adjusting the injection conditions such as opening/closing injection gates and ventilation ports in predefined schedules to decrease the thickness variation.
Murat Sozer's Bio:
Dr. Murat Sozer is an Assistant Professor at Department of Mechanical Engineering, Koç University. He received his Ph.D. from University of Delaware in Mechanical Engineering (1995). He worked as a design engineer at Aselsan Military Electronics Inc. (1986-1989). After completing his PhD, he worked as a technical editor to Prentice-Hall Publishers (1996 -1997) and as a post-doctoral fellow and visiting professor at University of Delaware, Center for Composite Materials (1995 -2000).
He has published a book and two chapters on manufacturing processes of composite materials, 24 journal and conference publications and an issued patent in addition to many workshop and oral presentations. His research interests are flows through porous media, free-surface flows, modeling and control of composite material manufacturing processes, resin transfer molding (RTM) , and vacuum-assisted RTM processes. Dr. Sozer leads the Composite Materials Manufacturing Laboratory.
April 24, 2008, 13:40, FENS G029