Title :
Reliability Estimate of Ships Life Based on Zero-failure Data
Author :
Wang, Xiaoying ; Shen, Jihong
Author_Institution :
Harbin Eng. Univ., Harbin, China
Abstract :
The life distribution of some type of ships is Wei bull distribution. In a ship life test, censored at fixed time totally 15 times, the zero-failure data are got, used to estimate the ships life reliability. The crucial point is the first step-how to estimate the failure probability. By the hierarchical Bayesian analysis, the probability is estimated. The Gamma distribution is used to be the prior distribution of failure probability. Then, the curve of Wei bull is stimulated by the least square method. The method is easy to compute and very convenient for engineering application. The result shows estimation of is robust.
Keywords :
Bayes methods; Weibull distribution; failure (mechanical); failure analysis; gamma distribution; least squares approximations; life testing; reliability; ships; Weibull distribution; failure probability distribution; gamma distribution; hierarchical Bayesian analysis; least square method; ship life distribution; ship life reliability estimation; ship life test; zero-failure data; Bayesian methods; Educational institutions; Least squares methods; Marine vehicles; Robustness; Weibull distribution; hierarchical bayesian analysis; reliability estimate; ships life; zero-failure data;
Conference_Titel :
Computational Sciences and Optimization (CSO), 2012 Fifth International Joint Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-1365-0
DOI :
10.1109/CSO.2012.69
