Fatigue Reliability Analysis of Turbine of Turbocharger Based on the Endurance Test Profile of Engine

Abstract:

For the fatigue failure mode of turbine of turbocharger for vehicle application, the method for fatigue reliability analysis and fatigue life prediction of turbine is studied based on the endurance test profile of engine. Firstly, the critical location of turbocharger turbine with fatigue failure mode is determined. Then, the fatigue stress process of turbine is calculated according to the main operating modes consisted of the endurance test profile of engine. The fatigue strength of critical location of turbine with fatigue failure mode is studied through the fatigue test of imitation specimen, and the relationship between the fatigue life of turbine and stress is developed. Further, according to the endurance test profile of engine, the reliability model of turbine with fatigue failure mode is developed, and the rule that the reliability of turbine with fatigue failure mode changes as the cycle number of endurance test of engine is studied. Finally, the method for determining the reliable fatigue life of turbine is proposed.

• Periodical: Applied Mechanics and Materials (Volumes 215-216)
• Pages: 750-753
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.215-216.750
• Online since: November 2012
• Authors: Wang Zheng, Wei Dong Xing, Zheng Wang, Li Xin
• Keywords: Endurance Test, Fatigue, Reliability, Reliable Life, Turbocharger Turbine

References

[1] Zhu Daxin: Turbocharging and Turbocharger (China Machine Press, Beijing 1992).

[2] Wang Zheng, Wang Zengquan, Guo kai, et al: Transactions of the Chinese Society for Agricultural Machinery, Vol. 42 (2011): pp.32-35.