Research on Corrosion Prediction Technology of Lap Joint Structures with Dissimilar Materials Based on Boundary Element

Abstract:

In order to assess the safety and reliability of lap joint structures with dissimilar materials in aircraft, the mixed structure of CFRP and 2A12 was taken as an example, and a calculation model that based on the boundary element method was provided to simulate the galvanic corrosion. Depend on this, the research in the influence of the electrolyte concentration and the film thickness on the corrosion current density and potential distribution on the surface of simulation structures was developed. Meanwhile, the measured data was also used to verify the accuracy of the output result of the model. The comparsion result shows that outputs of the model are in good agreement with experiment datas. This model can be used to predict the galvanic corrosion in the lap joint structure in aircraft, thus minimizing the potential threats caused by corrosion to the flight safety.

• Periodical: Advanced Materials Research (Volume 1051)
• Pages: 171-177
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1051.171
• Online since: October 2014
• Authors: An Dong Wang*, Yue Liang Chen, Yong Zhang, Gui Xue Bian
• Keywords: Boundary Element, Corrosion Prediction, Dissimilar Material, Lap Joint Structure

References

[1] CHEN Yueliang, JIN Ping, LIN Dianxiong et al. Corrosion Control and Strength Assessment of Navy Aircraft Structure [M]. Beijing: National Defence Industry Press, (2009).

[2] A. Peratta, T. Hack et al. Galvanic Corrosion Modeling for Aircraft Environments [J]. Eurocoor, (2009).

[3] Chinese Special Vehicle Research Institute. Guide of Corrosion Control and Management of Navy Aircraft Structure [M]. Beijing: Aviation Industry Press, (2005).

[4] Andres B Peratta, John M W Baynham, Robert A. Adey. Advances in Catholic Protection Modeling of Deep Well Casings in Multi-Layered Media. CORROSION 2009, Paper 6555 Atlanta, Georgia. NACE International (2009).

[5] Li Jiuqing, DU Cuiwei. Monitoring Technology and Test Method for Corrosion [M]. Beijing: Sinopec press, (2007).

[6] LUO Lincong, PAN Jihong, TIAN Maocheng et al. Influence of Tube Shape on Falling Water Film Thickness and Nusselt Number Outside Horizontal Tube [J]. CIESC Journal, 2013, 64 (8): 2760-2768.

[7] K. Amaya, S. Aoki. Effective Boundary Element Methods in Corrosion Analysis [J]. Engineering Analysis with Boundary Elements, 2003, 27 (4): 507-519.

DOI: 10.1016/s0955-7997(02)00158-3

[8] DENG Fan. ANSYS10. 0 Self-study Manual of Finite Element Analysis [M]. Beijing: People's Posts and Telecommunications Press, (2007).