Method for Determining the Reliable Life Parameter of Turbine Wheel of Turbocharger with Over-Speed Failure Mode

Zheng Wang; A Na Wang; Kai Guo; Li Zhuang; Lin Hua

doi:10.4028/www.scientific.net/AMR.544.251

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 544Method for Determining the Reliable Life Parameter...

Method for Determining the Reliable Life Parameter of Turbine Wheel of Turbocharger with Over-Speed Failure Mode

Abstract:

For the over-speed failure mode, the method for determining the reliable life parameter of turbine wheel of turbocharger is proposed in this paper. The shortage of design criteria based on conventional safety factor for turbine wheel with over-speed failure mode is analyzed. In order to embody the characteristics of structure and over-speed failure mode, the turbine wheel is taken as a series system consisting of several blade symmetrical components in the reliability modeling process. The time-reliability models of turbine wheel are derived and the relationship between the reliability and failure rate of turbine wheel and life parameter is studied. Then, the method for determining the reliable life parameter of turbine wheel of turbocharger with over-speed failure mode is proposed based on the reliability model and reliability curve. As long as the design parameters including the number of blades, speed, stress, and strength are given, the reliable life of turbine wheel of turbocharger with over-speed failure mode can be determined with the method proposed.

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Periodical:

Advanced Materials Research (Volume 544)

Pages:

251-255

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.544.251

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Online since:

June 2012

Authors:

Zheng Wang, A Na Wang, Kai Guo, Li Zhuang, Lin Hua

Keywords:

Over-Speed Failure, Reliability, Reliable Life, Turbine Wheel, Turbocharger

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