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�������պ����ѧѧ�� 2001, Vol. 27 Issue (2) :129-132    DOI:
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Research of Gray Model Applied in the Prior Corrosion and Fatigue of Aluminum Alloys
LIU Yan-li1, ZHONG Qun-peng1, WANG Yu-kui2*
1. Beijing University of Aeronautics and Astronautics, Dept. of Materials Science and Engineering;
2. Shanxi Aircraft Manufacture Corporation

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Abstract�� The effect of corrosion temperature and time on properties of the prior-corroded aluminum alloys was discussed tentatively, and gray model was introduced in the research of the simulating accelerated corrosion test for aluminum alloys. The non-linear relationship between mass loss,maximum corrosion depth,detail fatigue rating(DFR) and corrosion time was established based on power function,constant interval gray model as well as variable interval gray model. The results indicate that gray model can be employed to predict the underlying corrosion trend and fatigue properties precisely,compared with power model.Whether constant interval or variable interval data,gray model can describe successfully,and the accuracy of the gray model can also be improved by setting up modified residuals model.
Keywords�� gray systems   fatigue   aluminium alloys   prior corrosion     
Received 1999-11-08;
Fund:

�����ص�����о�ר���������Ŀ(G19990650)

About author: ������(1970-),��,����������,��ʿ��,100083,����.
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������, ��Ⱥ��, �����.���Ͻ�Ԥ��ʴ��ƣ�����ܻ�ɫģ���о�[J]  �������պ����ѧѧ��, 2001,V27(2): 129-132
LIU Yan-li, ZHONG Qun-peng, WANG Yu-kui.Research of Gray Model Applied in the Prior Corrosion and Fatigue of Aluminum Alloys[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2001,V27(2): 129-132
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