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�������պ����ѧѧ�� 2002, Vol. 28 Issue (1) :116-118    DOI:
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Prediction of Surface Fatigue Crack Growth Lives of Structures under Bending Loads at Elevated Temperature
HUANG Pei-yan1, LUO Yi1, FEI Bin-jun2*
1. South China University of Technology, College of Traffic and Communications;
2. Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics

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Abstract�� Based on an empirical J-integral equation proposed earlier, surface fatigue crack growth rates along crack length and depth directions including the J-integral were developed. Using these expressions, the crack growth lives of a SUS304 steel at 550�� under bending loads are predicted. The fatigue crack growth experiment was carried out in the same condition. The results showed that the predicted curves of crack length and crack depth vs number of cycles agree well with the experimental data. It proved that the method described were available.
Keywords�� fatigue life   predictions   surface cracks   bending loads   ��J-integral     
Received 2000-07-11;
Fund:

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������, ����, �ѱ��.�������乹����������ƣ����չ����Ԥ��[J]  �������պ����ѧѧ��, 2002,V28(1): 116-118
HUANG Pei-yan, LUO Yi, FEI Bin-jun.Prediction of Surface Fatigue Crack Growth Lives of Structures under Bending Loads at Elevated Temperature[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(1): 116-118
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