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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (8): 225138-225138.doi: 10.7527/S1000-6893.2021.25138

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Further research on fatigue statistics intelligence

XU Jiajin1, GAO Zhentong2   

  1. 1. L&Z International Leasing Co. Ltd, Guangzhou 510620, China;
    2. School of Aeronautical Science and Engineering, Beihang University, Beijing 100083, China
  • Received:2020-12-19 Revised:2021-02-10 Online:2022-08-15 Published:2021-02-08

Abstract: "Gao Zhentong Method in Intelligence of Statistics in Fatigue"[1] is only the beginning of the intelligent research of fatigue statistics, so it is necessary to do further research on it. One of the important questions is, what standard is used to judge whether the sample data belongs to the Gaussian distribution or the Weibull distribution? If it belongs to the Weibull distribution, it is still possible to get three different parameters due to different algorithms. There is also the question of which Weibull distribution is more suitable. It is specially proposed to use the correlation coefficient and the size of the determination coefficient as a judgment standard, and at the same time, the corresponding intelligent solution is given. The confidence interval of the three-parameter Weibull distribution is also studied. For practical applications, people are most concerned about the confidence interval of the fatigue life under a given confidence and reliability, and an intelligent solution based on the Gao Zhentong method is given.

Key words: three-parameter Weibull distribution, determination coefficient, confidence interval, Gao Zhentong method, intelligent fatigue statistics

CLC Number: