China Safety Science Journal ›› 2021, Vol. 31 ›› Issue (11): 54-63.doi: 10.16265/j.cnki.issn 1003-3033.2021.11.008

• Safety engineering technology • Previous Articles     Next Articles

Association analysis on CAD design and manufacturing defect cases

CAO Huiling, HU Yanjie   

  1. School of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
  • Received:2021-08-11 Revised:2021-10-04 Online:2021-11-28 Published:2022-05-28

Abstract: In order to effectively prevent aviation safety incidents and find potential correlation between them, correlation of design and manufacturing defect cases reflected by CAD was analyzed. Firstly, rules of attribute extraction were developed for CAD. Then, risk levels of failure was taken as decision attributes to reduce condition attribute by using rough set model of incomplete information system. Finally, FP-growth algorithm was used to discover rules of vulnerable parts, event causes, accident levels, and treatment measures, so as to find out the internal relations among factors that cause unairworthiness or unsafe operation due to incompliance with operation regulation. The results show that association analysis of cases can extract rules with high confidence after rough set reduction, which is helpful for airworthiness management agencies to make corresponding decisions.

Key words: China airworthiness directive (CAD), design and manufacturing defect, rough set, FP-growth algorithm, incomplete information system, association rules

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