Part reliability design of centrifugal nozzle under thermal stress-dependent strength using polynomial method

Author

Wong, Chun Nam ; Huang, Hong-Zhong ; Lu, Yang ; He, Peng

Author_Institution

Sch. of Mechatron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2011

fDate

17-19 June 2011

Firstpage

898

Lastpage

903

Abstract

A polynomial method is developed to generate the stress-strength interference model with thermal stress-dependent strength. Accuracy of this method is investigated by an aeroengine fuel centrifugal nozzle. The computed reliability ranges from 0.9845 to 0.9942 under several thermal stress modes. Then steel alloys are chosen for various parts based on their prices and material properties. With this approach conditional thermal stress-dependent strength reliability of centrifugal nozzle can be established conveniently.

Keywords

aerospace engines; alloy steel; design engineering; mechanical strength; nozzles; polynomials; reliability; stress analysis; thermal stresses; aeroengine fuel centrifugal nozzle; centrifugal nozzle; part reliability design; polynomial method; steel alloys; stress-strength interference model; thermal stress modes; thermal stress-dependent strength; Fuels; Metals; Polynomials; Reliability; Stress; Thermal stresses; Turbines; centrifugal nozzle; higher order polynomial; steel alloy; stress-strength interference;

fLanguage

English

Publisher

ieee

Conference_Titel

Quality, Reliability, Risk, Maintenance, and Safety Engineering (ICQR2MSE), 2011 International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4577-1229-6

Type

conf

DOI

10.1109/ICQR2MSE.2011.5976750

Filename

5976750