SEMINAR: SiC/Spinel Nanocomposite, A Promising Candidate for Aerospace Industry

Fariborz Tavangarian, Assistant Professor, Department of Engineering and Technology Management, Morehead State University
When Feb 16, 2016
from 11:00 AM to 12:00 PM
Where Sackett Hall 200
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Abstract

Ceramic composites are of a great interest in aerospace industry; however, they are very sensitive to mechanical and thermal stress. This stress may produce many microcracks which may limit their applications in some cases. To overcome this problem, self-healing approaches have been proposed by many scientists to increase the integrity and the reliability of ceramic structures in service. One of the most popular applications of ceramic composites in aerospace industry is thermal barrier coating in turbine blades and exhaust nozzles of jet engines. High pressure turbine blades should sustain a great amount of thermal loads. Cyclic thermal loads may cause thermal fatigue in jet engine coatings, which is a progressive structural damage. Each time jet engines start or shut down, the temperature increases or decreases rapidly, which causes a high thermal gradient both within and between the substrate and coating. Building up of such thermal stress leads to surface microcracking and crack growth, subsequently exposing the metal substrate to high temperature and causing permanent deformation or oxidization. In order to overcome this problem, it is highly desired that the ceramic coating layer has crack self-healing ability. Recent advancements in the understanding of crack-healing mechanism of a novel bio-inspired SiC/spinel nanocomposite will be presented.

Speaker's Biography

Fariborz Tavangarian received his Ph.D in Mechanical Engineering from Louisiana State University in 2014. Currently, he is an assistant professor in the department of Engineering and Technology management at MSU. In 2011, at the age of 26, and while he was a master student, he was awarded as the 7th Best Young Specialists of Nanotechnology and 44th Scholars of Nanotechnology by Iranian Nanotechnology Initiative Council among all the faculty professors in the whole nation. Subsequently, in the same year he was selected as a National Genius by Iran’s National Elite Foundation. Dr. Tavangarian has published 29 peer-reviewed journal articles receiving over 400 citations from Google Scholar with an h-index 15, as well as 2 book chapters and 3 international conference papers. His major research interests include bio-inspired materials, crack self-healing materials, light weight metals, nanocomposites, ceramics, biomaterials and tissue engineering.