To resolve the complexity and fuzziness of influence on the corrosion damage of aircraft structures, a method based on fault tree analysis and fuzzy theory was proposed to evaluate the corrosion damage of aircraft structures in complicated environments. Fault tree of corrosion damage on aircraft structures was set up by analysis of corrosion process and mechanism, and then the evaluation set of corrosion damage was obtained. Relative importance of evaluation factors was analyzed, and weight set was got by the proportion calculation of relative importance of evaluation factors. After the evaluation grade of corrosion damage has been set up, the fuzzy mapping between evaluation set and evaluation grade was set up. The corrosion damage of service environments on aircraft structures was evaluated quantitatively by fuzzy transformation of fuzzy relation. Finally, corrosion damage evaluations of aircraft aluminum alloy structures and stainless steel structures in coastal environments were illustrated, which demonstrate that the proposed method is valid and can provide evidence for the aircraft structural design and maintenance.
���۴�,�Ȱ�,����Ⱥ,��.�ֲ�����������Ͻ�ƣ�Ͱ���������е㸯ʴ��Ӱ��[J].���ղ���ѧ��,2009,29(4):52-56 Liu Huicong,Gu An,Zhu Liqun,et al.Influence of partial aluminum clad on pitting of aluminum alloy fatigue samples in NSS [J].Journal of Aeronautical Materials,2009,29(4):52-56(in Chinese)
Russo S,Sharp P K,Mills T B,et al.The influence of the environment and corrosion on the structural integrity of aircraft materials [J].Fatigue and Fracture of Engineering Materials and Structures.2009,32(6):464-472
Pitting corrosion of cast metallurgy aluminum-beryllium alloys in sulfuric acid solutions [J].Corrosion,2008,64(6):517-531
Burleigh T D,Ludwiczak E,Petri R A.Intergranular corrosion of an aluminum-magnesium-silicon-copper alloy[J].Corrosion,1995,51(1):1969-2010
Jones K,David W H.Prior corrosion and fatigue of 2024-T3 aluminum alloy [J].Corrosion Science.2006,48(10):3109-3122
�շ�,ŷ������,������.��ģ���ۺ����з�������������������[J].�Ͼ����պ����ѧѧ��,2000,32(3):299-304 Tao Feng,Ouyang Zuxing,Liu Zhengxun.Evaluation for life on laminal vessel using fuzzy comprehensive decision process [J].Journal of Nanjing University of Aeronautics & Astronautics,2000,32(3):299-304(in Chinese)