حميد زارعي

Safety parts are a set of parts that endanger the health of car occupants if there is a defect in them or if they do not work properly. In this research, the strength and authenticity of one of the safety parts of Tiba passenger car has been eva‎luated through fatigue test. In the first chapter, the most important safety parts in the front, steering and brake assembly are briefly introduced along with their respective duties. In the second chapter and in the review of research records, some methods of identifying defects, strength measurement, life estimation and their results have been discussed. In the third chapter of this research, according to the available facilities and technologies, including laboratory equipment and facilities, the fatigue test method of the Tiba car was designed and after the design and construction of the fixture, the car steering knuckle, which is the most important part of this part, according to the assumptions of Predetermined in three car steering knuckle were eva‎luated and fatigue tested. In the fourth chapter, the analysis of the test output data confirmed the high strength and long life of the steering arm of the three models used in the test. Considering the variety of car parts suppliers in the country and the uncertainty of the same materials used and production methods in a part, as well as qualitative differences in the production of a specific part in different time frames, the generalization of the results of this research to all available in the domestic market, it is necessary to eva‎luate more samples and check the reproducibility of the results.

جلوبندي، سگدست، بازوي فرمان، اصالت‌سنجي، تست خستگي

front suspension system, car steering knuckle, steering wheel arm,, authenticity testing, fatigue test

hamid zarei

mohammad riahi