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Journal of Failure Analysis and Prevention

, Volume 17, Issue 2, pp 354–362 | Cite as

Study on Processing Method and Engineering Application of Censored Data

  • Yuanyuan Ma
  • Liyang Xie
Technical Article---Peer-Reviewed

Abstract

The method and effects of extracting information from different fatigue test data were analyzed and compared according to the test data in engineering in this paper. By probability statistical analysis, the life data of ignored censored data were collected and analyzed to fit the distribution types and P–S–N curves. Otherwise, the life data including censored data were estimated by maximum likelihood estimation and K–S test. It is shown that the practice of simply ignoring censored data will underestimate the fatigue performance of the test sample in different degrees after analysis and comparison of the two results. Therefore, according to different types of test data, the influence of censored data should be considered fully in order to select the appropriate treatment method. Censored data in engineering usually should not be ignored.

Keywords

Reliability method Censored data Maximum likelihood estimation (MLE) K–S test 

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Copyright information

© ASM International 2017

Authors and Affiliations

  1. 1.School of Mechanical Engineering and AutomationLiaoning University of TechnologyJinzhouChina
  2. 2.School of Mechanical Engineering and AutomationNortheastern UniversityShenyangChina

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