Abstract: The evolutions of stresses in mechanical transmissions are not uniform. It was being developed analysis techniques and tests to find the influence of random efforts on the fatigue life. In the paper is presented a mathematical program regarding the evaluating by fatigue using “rainflow” method, of the influence the random stresses on the mechanical parts life.

Brief Biography of the Speaker:
Constantin Buzatu is Professor at the Faculty of Technological Engineering and Manufacturing Technology Department of Transilvania University of Brasov, Romania. He graduated in 1972 and he obtained his Ph.D. in the field of accuracy of machining processes. His research interests are in Manufacturing engineering processes, Automation in industry, Performance measurement and management, Education technology. He is author and co-author of seven books and more than 150 papers in national and international conferences. Also he has been research manager for several research grants from Ministry of Education of Romania, and for contracts with factories in industry to introduce new technologies in producing workpieces and to improve their reliability. He was member of technical program committee of some conferences and chairman of local and international conferences. He has been scientific reviewer for International Conferences and independent evaluator for Grant National Competitions.