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�������պ����ѧѧ�� 2002, Vol. 28 Issue (2) :202-204    DOI:
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Probability Damage Tolerance Analysis for Structures with Multiple Fatigue Cracks under Corrosive Environment
ZHANG Jian-yu, FEI Bin-jun*
Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics

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Abstract�� Analyzing damage tolerance capability of structures with multiple fatigue cracks is an important task for the current assessing of structural fatigue reliability of aging airplanes. Based on probability damage tolerance theory for structures with multiple fatigue cracks under normal environment, a probability damage tolerance analysis method was established for structures with multiple fatigue cracks under corrosive environment. Using the model of logarithmic normal random variables to describe crack propagation processes, a reliability-life curve is presented for the structures with multiple cracks under corrosive environment, by considering the influences of the air during corrosion flight and the randomicity of crack propagation. A numerical example is given to prove the validity of the proposed method.
Keywords�� structural reliability   structural life time   crack propagation   corrosion fracture   damage tolerance     
Received 2000-07-11;
About author: �Ž���(1973-),��,�������ض���,��ʿ��,100083,����.
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�Ž���, �ѱ��.��ʴ�����¶����ƽṹ�ĸ����������޷���[J]  �������պ����ѧѧ��, 2002,V28(2): 202-204
ZHANG Jian-yu, FEI Bin-jun.Probability Damage Tolerance Analysis for Structures with Multiple Fatigue Cracks under Corrosive Environment[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(2): 202-204
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