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	Correlation between the geometric parameters of corrosion pit and stress concentration factor
	Zhao, Wei ; Huang, Yong Fang ; Ye, Xu Bin ; Hu, Ben Run ; Liu, Jian Zhong ; Chen, Li Jie ; Chen LJ(陈立杰)
	2013
关键词	Aircraft accidents Aircraft manufacture Airframes Design Failure (mechanical) Finite element method Pitting
英文摘要	Conference Name:2nd International Conference on Intelligent Materials, Applied Mechanics and Design Science, IMAMD 2013. Conference Address: Guangzhou, China. Time:April 13, 2013 - April 14, 2013.; International Science and Education Researcher Association, China; Beijing Gireida Education Research Center; VIP-Information Conference Center, China; Corrosion is one major damage mechanisms of aircraft structure, which can result in catastrophic failures and disasters. Quantitative analysis of pitting stress concentration effect is necessary for aircraft aluminum alloy structures, especially in coastal area. In the present paper, based on the observations of corrosion pit morphology of 2524 aluminum alloy using Keyence VHX-600 optical microscope and white light confocal microscope, three-dimensional finite element analyses (FEA) had been conducted systematically to evaluate the stress distribution of the cuboids aluminum alloy specimen with pits stressed remotely under uniaxial tension. It is found that pit metric parameter a/2c is the key parameter affecting stress concentration factor (SCF) and an empirical quantitative relation is given. In addition, we study the contribution of secondary (premature) pits at the bottom of hemi-spherical pit to the SCF of primary pit and an estimation formula is given. These provide significant methods for characterizing pitting damage and quantitatively estimating SCF so as to predict life. ? (2013) Trans Tech Publications, Switzerland.
语种	英语
出处	http://dx.doi.org/10.4028/www.scientific.net/AMM.327.156
出版者	Trans Tech Publications Ltd
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/86137]
专题	物理技术－会议论文
推荐引用方式 GB/T 7714	Zhao, Wei,Huang, Yong Fang,Ye, Xu Bin,et al. Correlation between the geometric parameters of corrosion pit and stress concentration factor. 2013-01-01.

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