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YANG Xinhua, JIA Xin, ZHU Ping, LI He. Analysis of factors affecting fatigue performance of welded joints based on information gain rate[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(10): 73-78. DOI: 10.12073/j.hjxb.20200808001
Citation: YANG Xinhua, JIA Xin, ZHU Ping, LI He. Analysis of factors affecting fatigue performance of welded joints based on information gain rate[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(10): 73-78. DOI: 10.12073/j.hjxb.20200808001
shu

Analysis of factors affecting fatigue performance of welded joints based on information gain rate

  • 1.

    Dalian Jiaotong University, Dalian, 116028, China

  • 2.

    Liaoning Key Laboratory of Welding and Reliability of Rail Transportation Equipment, Dalian, 116028, China

  • 3.

    CRRC Changchun Railway Vehicles Co., Ltd., Changchun, 130062, China

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  • Received Date: August 07, 2020
  • Available Online: December 14, 2020
    Graphical Abstract
    • Abstract
  • Aiming at the problems of using information entropy to evaluate the influence factors of welding fatigue performance, this paper introduces the concept of information gain rate and establishes an analysis model for analyzing the influencing factors of fatigue performance of carbon steel and stainless steel resistance spot welded joints. The information entropy, information entropy proportion and information gain rate of each factor are analyzed to study the influence of each factor on welding fatigue performance. The results show that the information entropy and its proportion of plate thickness and welding time is the largest, and the uncertainty is the highest, however electrode diameter and electrode pressure is just the opposite, the large difference in information entropy of each factor leads to a great influence on the information gain. The information gain rate of electrode diameter and electrode pressure is 59.34%, which has the greatest impact on fatigue performance. The information gain rate of plate width is 38.89%, which has the least impact on fatigue performance. The information gain rate of plate thickness and welding time is 52.33%, the impact on fatigue performance is second to the electrode diameter and electrode pressure.
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