Online Seminar on Evaluating Ceramic Matrix Composites Behavior Using Versatile High Velocity Oxygen Fuel Burner Rig for Testing by Dr. Joseph El Rassi

Abstract

Effective testing of ceramic matrix composites (CMCs) and CMC/coating systems for high temperature, high stress, high velocity and/or severe oxidation/corrosion environments is a critical need in materials/coatings evaluation for extreme environments of hot section parts in jet engine and hypersonic applications. Most current technology can evaluate two or three of the extreme conditions for a given application; however, incorporating as many of the extreme thermo/mechanical/environmental factors is highly advantageous to understand combinatorial effects. A high velocity oxygen fuel burner rig developed at the University of Akron offers an excellent platform to evaluate many of these extreme conditions. Several examples using SiC-based CMCs of thermomechanical conditions will be presented for both jet engine and hypersonic applications.

Biography: Dr. Joseph El Rassi recently graduated with his PhD in Mechanical Engineering at the University of Akron, Akron, Ohio, USA. His research work was on the use of non-destructive evaluation techniques to determine damage evolution in high temperature ceramic matrix composites. During his PhD, he had the opportunity to work with federal government agencies such as NASA Langley (LaRC, Hampton, VA) and Wright Patterson Airforce Base (AFRL, Dayton, OH). At AFRL, Joseph worked on evaluating the mechanical behavior of ceramic matrix composite sub element turbine blades at room and elevated temperatures. The following year, he joined the hypersonic branch at LaRC and focused on characterizing the material properties of 3-Dimensional Carbon/Carbon materials with different architectures at room and elevated temperatures. The application was heatshield for reentry capsule. During his research time, he authored more than 10 peer reviewed journal publications. He also authored 6 conference papers along with 2 ITAR restricted publications.

Notice: This event is open to public in respect with the VKI eligibility criteria.