Rapid evaluation of tile-wall bonding integrity using multiple-head impact acoustic method

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	Rapid evaluation of tile-wall bonding integrity using multiple-head impact acoustic method
	Luk, B. L. ; Liu, K. P. ; Tong, F. ; Tong F(童峰)
刊名	http://dx.doi.org/10.1016/j.ndteint.2011.01.004
	2011-05
关键词	Impact acoustics Nondestructive testing Tile-wall inspection Spectral peak extraction
英文摘要	City University of Hong Kong [9610024-630: ITRG006-06]; In view of the increasing hazards posed by tiles falling from high-rise buildings, a nondestructive testing (NDT) method based on frequency domain features, which are obtained from the sound signals generated by tapping the wall surfaces with a single-head impactor, has been developed to ascertain the tile-wall bonding integrity in our previous investigation. However, the single-point-impact inspection operation will lead to extremely low inspection efficiency in practical implementation, especially considering the large wall area of high-rising buildings. Aiming to develop a significantly faster inspection method that can meet the practical need, a multiple-head impactor consisting of 3 steel spherical heads is proposed; each steel head is constructed with different resonant frequencies in order to ensure correct extraction and analysis of acoustic features related to each steel head when all 3 heads impact the wall surface simultaneously. Based on different spectral patterns related to different bonding qualities at each impact location, a spectral peak identification approach has been developed to automate the inspection process. The proposed method is 3 times faster than the similar method using a single-head impactor. (C) 2011 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60635]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Luk, B. L.,Liu, K. P.,Tong, F.,et al. Rapid evaluation of tile-wall bonding integrity using multiple-head impact acoustic method[J]. http://dx.doi.org/10.1016/j.ndteint.2011.01.004,2011.
APA	Luk, B. L.,Liu, K. P.,Tong, F.,&童峰.(2011).Rapid evaluation of tile-wall bonding integrity using multiple-head impact acoustic method.http://dx.doi.org/10.1016/j.ndteint.2011.01.004.
MLA	Luk, B. L.,et al."Rapid evaluation of tile-wall bonding integrity using multiple-head impact acoustic method".http://dx.doi.org/10.1016/j.ndteint.2011.01.004 (2011).