Analysis of horizontal machining center field failure data based on generalized linear mixed model—a case study
Article first published online: 15 JUL 2010
Copyright © 2010 John Wiley & Sons, Ltd.
Quality and Reliability Engineering International
Volume 27, Issue 2, pages 239–248, March 2011
How to Cite
Liu, F., Zhu, H., Shao, X. and Gao, G. (2011), Analysis of horizontal machining center field failure data based on generalized linear mixed model—a case study. Qual. Reliab. Engng. Int., 27: 239–248. doi: 10.1002/qre.1118
- Issue published online: 21 FEB 2011
- Article first published online: 15 JUL 2010
- National Natural Science Foundation of China (NSFC). Grant Numbers: 50705036, 50825503
- National High Technology Research and Development Program of China (863 Program). Grant Number: 2009AA043301
- horizontal machining center;
- multi-copy repairable system;
- generalized linear mixed models;
- field failure data
In order to assess the operational reliability of the horizontal machining center (HMC), field failure data for 14 HMCs over one year are collected from an engine plant of a large automobile manufacturing company in China. In contrast with the usual approach, which just pools the data from all copies under the assumption that each copy is modeled by the same power law processes (PLP), a new model based on the generalized linear mixed model (GLMM) is proposed for analyzing the failure data from all copies of HMC. A basic idea of this method is to assume heterogeneity among all copies of HMC; it is also found that the underlying model for each individual copy is a PLP model with different shape parameters and scale parameters in the GLMM model. This method can make inferences about both the population and each individual copy. Meanwhile, the modified Anderson–Darling test is adapted to the goodness-of-fit test of the model. The results of the analysis suggest that this method is effective to analyze reliability of HMC. Copyright © 2010 John Wiley & Sons, Ltd.