Structural Surface Crack Monitoring Method Based on Electrical Potential Technique and Modern Surface Technology

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	Structural Surface Crack Monitoring Method Based on Electrical Potential Technique and Modern Surface Technology
	R. H. Cui; Y. T. He; Z. M. Yu; H. P. Li; W. J. Shu; J. Q. Du
	2011
发表期刊	Chinese Journal of Mechanical Engineering
ISSN	1000-9345
卷号	24 期号:4 页码:601-606
摘要	Crack monitoring plays a great role in modern structural health monitoring, however, most of the conventional crack inspections have disadvantages in terms of the accuracy, expense, reliability, durability and level of instrumentation required. Thus, development of a simple and reliable crack inspection technique that allows continuous monitoring has been desired. In this paper, electrical potential technique and modern surface technology are employed together to develop a new structural surface crack monitoring method. A special crack monitoring coating sensor based on electrical potential technique was deposited on the hot spot of the structure by modern surface technology. The sensor consists of three layers: the isolated layer, the sensing layer and the protective layer. The isolated layer is prepared by anodic oxidation technology, the sensing layer is made of ion plated copper, and the protective layer is made of silicone. The thickness of each layer is at micrometer magnitude. The electrical conductivity of the sensor is very stable, and the fatigue performance of the specimen with or without coating sensor is nearly unchanged. The crack monitoring experiment result shows that there are two sudden rises of the coating sensor electrical potential values, corresponding to different stages of the crack initiation and propagation. Since the width of the surface coating sensor is only 0.5 mm, this crack monitoring sensor can detect the propagation of cracks less than 0.5 mm long. The method proposed takes the simplicity of electrical potential technique and can monitor surface crack of nearly all kinds of structures precisely. The results of this paper may form the basis of a new crack monitoring system.
部门归属	[cui ronghong; he yuting; shu wenjun; du jinqiang] af engn univ, coll engn, xian 710038, peoples r china. [cui ronghong; yu zhiming] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. [li hongpeng] chinese peoples liberat army, unit 94655, wuhu 241007, peoples r china.;cui, rh (reprint author), af engn univ, coll engn, xian 710038, peoples r china;crh-1982@163.com hyt666@tom.com zmyu@imr.ac.cn
关键词	Crack Monitoring Electrical Potential Technique Surface Technology Coating Sensor Ly12-cz Aluminum Alloy Growth Damage
URL	查看原文
WOS记录号	WOS:000293252100012
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30289
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. H. Cui,Y. T. He,Z. M. Yu,et al. Structural Surface Crack Monitoring Method Based on Electrical Potential Technique and Modern Surface Technology[J]. Chinese Journal of Mechanical Engineering,2011,24(4):601-606.
APA	R. H. Cui,Y. T. He,Z. M. Yu,H. P. Li,W. J. Shu,&J. Q. Du.(2011).Structural Surface Crack Monitoring Method Based on Electrical Potential Technique and Modern Surface Technology.Chinese Journal of Mechanical Engineering,24(4),601-606.
MLA	R. H. Cui,et al."Structural Surface Crack Monitoring Method Based on Electrical Potential Technique and Modern Surface Technology".Chinese Journal of Mechanical Engineering 24.4(2011):601-606.

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