Plenary Lecture

Non-Destructive Tests to Determine Lifetime of the Pipes

Professor Mihai Demian
University of Craiova
Faculty of Technological Systems Engineering and Management
from Drobeta Turnu Severin
Department of Engineering
Romania
E-mail: mihaidemian@yahoo.com

Abstract: The life time represent nominal reliability of a product. It is important for power plant to know each moment the remaining life time of the each component equipment. Using a nondestructive method as degradation grains limits it is possible to find quickly the remaining life time of pipes. Struers replicas gives important information’s to use the method and give a view about structural evolution in time of the metallic material. The paper present the results of the nondestructive method and shows that the pipes at service temperature there is a increase of the grains, a nodulizing of the carburize precipitation which finally determine cavitations. Experimental data permit comparison between the results of nondestructive and destructive methods.

Brief Biography of the Speaker:
Prof. Mihai Demian graduated in 1989 the Faculty of Mechanic, “Traian Vuia” Polytechnic Institute of Timisoara, Romania, as an engineer in machines buildings technology and he is doctor in Materials Science at “Politehnica” University of Timisoara. In present he is Vice-Dean and Assoc. professor at Faculty of Technological Systems Engineering and Management from Drobeta Turnu Severin, Department of Engineering at University of Craiova. His research interest is in nondestructive testing, laser heat treatment, material science. He is author of 9 books and more then 55 scientific papers, published at international conferences and journals. He was manager in 2 projects and member in over 10 national an international research projects.
Demian Mihai worked from 1989 to 1991 at Shipbuilding Yard Enterprise from Drobeta Turnu Severin, in the field of mechanical working for ships. From 1991 he is engineering education, developing researches in the field of materials sciences.