Title: Reliability assessment of centrifugal compressor impeller based on the Monte Carlo method

Authors: Yifan Wang; Shujie Liu; Chi Liu; Hong-Chao Zhang

Addresses: School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China ' School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China; Department of Industrial Engineering, Texas Tech University, Lubbock, TX 79409, USA

Abstract: Reliability assessment of centrifugal compressor impellers has been a critical issue in industrial practice and application. In this paper, cycling life of the impeller obtained by the fatigue test is substituted into the S-N formula to calculate a group of parameter b in the formula. Then b is fitted by a three-parameter Weibull distribution. After that, Monte Carlo method is used for random sampling from the three-parameter Weibull distribution. Every b acquired by the sampling is substituted back into the S-N formula, by which a large group of values of the cycling life are calculated to fit its distribution. The reliability of the impeller under operating condition is then obtained to provide a critical reference for the health monitoring of the centrifugal compressor impeller online.

Keywords: impeller failures; fatigue life; life prediction; reliability analysis.

DOI: 10.1504/IJMR.2017.085420

International Journal of Manufacturing Research, 2017 Vol.12 No.2, pp.270 - 285

Published online: 25 Jul 2017 *

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