Int J Performability Eng ›› 2020, Vol. 16 ›› Issue (1): 87-97.doi: 10.23940/ijpe.20.01.p10.8797

• Orginal Article • Previous Articles     Next Articles

Method for Earlier Failure of the Special Vehicle Tub Curve based on the Weibull Two-Fold Piecewise Model

Xinlei Wangab, Shulin Liuc, Xiaojian Yiac*(), Huoming Weid, and Qun Hud   

  1. aBeijing Institute of Technology, Beijing, 100081, China
    bChina North Industries Corp, Beijing, 100053, China
    cChina North Vehicle Research Institute, Beijing, 100072, China
    d32184 Troops, Beijing, 100072, China
  • Submitted on ; Revised on ; Accepted on
  • Contact: Xiaojian Yi
  • Supported by:
    This paper is supported by National Natural Science Foundation (71801196), China Postdoctoral Science Foundatuion (2018M631606), and National Science Key Lab Fund project (6142212180308). We are grateful to the chief editor, editor and reviewers for the suggestions, which improve the draft of this paper.


In order to determine the turning point between the periods of early failure and random failure, a Weibull Two-fold Piecewise Model is proposed. Then, the procedures of determining the turning point of the bathtub curve of special vehicles are specified in this method. Finally, the turning point of the bathtub curve of a special vehicle is determined based on this paper's method. And the rationality of this method is verified. All in all, the result, derived from this method, is helpful to determine the period of the delivery test.

Key words: Weibull Two-fold Piecewise Model, turning point of the bathtub curve, special vehicle