Life Prediction of Hull Based on Weibull Distribution

Abstract:

In order to research the relationship between the life of hull with different structure and the reliability while using, a life estimation method for hull based on test was proposed. By assuming that the hull life span satisfied the Weibull distribution, with zero-failure data, confidence limit γ and reliability R, the confidence lower limit of reliable life were given according to test data of the hull life span. If the lower limit of the shape parameters of the Weibull distribution were known, this method can accumulate all of zero-failure data to increase the analysis presion of reliability greatly. At last, using this method, under the hull reliability R and the confidence γ, the confidence lower limit of reliable life with the hull structures as steel, titanium alloy and aluminum alloy were computed. The results indicate that the method is easy to compute and very convenient for engineering application.

• Periodical: Advanced Materials Research (Volumes 317-319)
• Pages: 2325-2330
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.317-319.2325
• Online since: August 2011
• Authors: Jin Long Guo, Yan You Chai, Yang Han, Hao Zhang
• Keywords: Life of Hull, Life Prediction, Reliability, Weibull Distribution, Zero-Failure Data

References

[1] Martz H F,Waller R A: Journal of Quality Technology, Vol. 11 (1979), p.128.

[2] Ming HAN: Advances in mathematics, Vol. 31 (2002), p.7 (in Chinese).

[3] Qiyuan Wang, Jiuyu Shi, Linzhu Chen: Journal of Harbin University of Science and Technology, Vol. 19 (1995), p.25 (in Chinese).

[4] Linzhu Chen, Jiuyu SHI, Qiyuan Wang: Journal of Harbin Engineering University, Vol. 16 (1995), p.95(in Chinese).

[5] Jinlong Guo, Jiuyu Shi, Jihong Shen: Journal of System Simulation, Vol. 20 (2008), p.1582 (in Chinese).

[6] Jinlong Guo, Jiuyu Shi, Jihong Shen: Journal of Harbin Engineering University, Vol. 29 (2008), p.573 (in Chinese).

[7] Huimin Fu, Pinghui Wang: Journal of Mechanical Strength, Vol. 26 (2004), p.260 (in Chinese).

[8] Pinghui Wang, Benyao Fan, Huimin Fu: Journal of Aerospace Power, Vol. 19 (2004), p.745 (in Chinese).

[9] Gao Zhentong: Fatigue and reliability. (Beijing University of Aeronautics and Astronautics Press, Beijing 2000) (in Chinese).

[10] Bryan Dodson: The Weibull Analysis Handbook. (ASQ Quality Press, Milwaukee 2006).

[11] Jiading Chen: Subsistence analyse and Reliability. (Peking University Press, Beijing 2005) (in Chinese).

[12] Ming Han: Mathematica Applicata, Vol. 19 (2006), p.325 (in Chinese).

[13] Ming Han: Chinese Journal of Engineering Mathematics, Vol. 21 (2004), p.245 (in Chinese).