A design exercise for a ceramic turbine disc subjected to centrifugal stresses

Author:

Stanley P1,Sivill A D2,Fessler H1

Affiliation:

1. Department of Mechanical Engineering, University of Nottingham

2. Joseph Lucas Ltd., Solihull

Abstract

A general procedure for the assessment of the failure probability of a stressed ceramic component is illustrated by a detailed study of a proposed turbine disc design. The procedure is based on a statistical approach using the Weibull probability distribution, and requires the evaluation of a stress integral over the volume or suface area of the component. The stress distributions in this case are obtained from a three-dimensional analysis of a photelastic model of the disc. The proposed design is critically appraised in the light of the derived stress integrals. The variation of failure probability with speed is illustrated and the effects of changes in the material properties of the prototype disc are quantitatively assessed.

Publisher

SAGE Publications

Subject

Applied Mathematics,Mechanical Engineering,Mechanics of Materials,Modeling and Simulation

Cited by 9 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Failure probability analysis for a RBSN cylinder with a SiC coating subjected to a radial heat flux;Journal of Materials Processing Technology;1999-08

2. Aspects of Design;Design and Manufacture of Composite Structures;1994

3. Probability of failure calculations and confidence band estimates for an annular brittle disc fractured under centrifugal loading;The Journal of Strain Analysis for Engineering Design;1986-07-01

4. Failure Probability of Shouldered and Notched Ceramic Components Using Neuber Notch Theory;Non-Oxide Technical and Engineering Ceramics;1986

5. An assessment of systematic errors in beam tests on brittle materials;Journal of Materials Science;1985-05

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