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�������պ����ѧѧ�� 2002, Vol. 28 Issue (1) :74-77    DOI:
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���ﳿ1, ۪����1, ������2, �̻�ΰ3*
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Approximate Function Based Mathematical Modeling in Material Corrosion
DENG Yang-chen1, LI Zheng-neng1, ZHANG Yi-ning2, CHENG Ji-wei3*
1. Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics;
2. Shen Yang Aircraft Research Institute;
3. Beijing University of Aeronautics and Astronautics, Dept. of Materials Science and Engineering

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Abstract�� The approximate function was led to mathematical modeling in material corrosion. By the characteristic of corrosion data, the divisional mathematical modeling concept was proposed. And it was compared with three models, which were gray model, dynamic data & bi-directional difference model and power function model respectively. The results told us that approximate function model owned not only strong adaptation but applied foreground in engineering as well, besides the highest accuracy over the other three models. From the models posed in this article, we suggested that 'critical point in material corrosion' should exist to some extent.
Keywords�� corrosion   critical points   model building   approximate function     
Received 2000-05-29;
Fund:

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About author: ���ﳿ(1965-),��,���Ϲ���,��ʿ��,100083,����.
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���ﳿ, ۪����, ������, �̻�ΰ.���ƺ������ڲ��ϸ�ʴ����ѧ��ģ[J]  �������պ����ѧѧ��, 2002,V28(1): 74-77
DENG Yang-chen, LI Zheng-neng, ZHANG Yi-ning, CHENG Ji-wei.Approximate Function Based Mathematical Modeling in Material Corrosion[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(1): 74-77
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