Analysis of fatigue life factors of aluminum alloy welded joints based on neighborhood rough set theory

被引：0
|
作者：
Wang C.-S. [1 ,2 ]
Zou L. [3 ]
Yang X.-H. [2 ]
机构：
[1] Engineering and Technology Center, CRRC Changchun Railway Vehicles Co., Ltd., Changchun
[2] School of Materials Science and Engineering, Dalian Jiaotong University, Dalian
[3] Software Institute, Dalian Jiaotong University, Dalian
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2017年 / 47卷 / 06期
关键词：
Fatigue life; Material synthesis and processing technology; Neighborhood rough set; Welded joints;
D O I：
10.13229/j.cnki.jdxbgxb201706024
中图分类号：
学科分类号：
摘要：
To sole the problem that classical rough set theory can only deal with continuous data, neighborhood rough set theory is employed to analyze the factors that influence the fatigue life of the welded joints. A unified neighborhood rough set model is proposed, which can handle both symbolic and numeric attributes. Attribute reduction algorithm combining forward greedy algorithm and backward pruning algorithm is used to obtain the key factors and to quantitatively calculate the weights of the factors influencing the fatigue life of the welded joints. Experiment results of aluminum alloy welded joints show that the proposed neighborhood rough set model can choose a small number of features and obtain an objective evaluation of various influence factors from the sample data of the aluminum alloy welded joints without any priori knowledge. © 2017, Editorial Board of Jilin University. All right reserved.
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页码：1848 / 1853
页数：5
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