A 3-D image detection method of a surface opening crack in concrete using ultrasonic transducer arrays

NCU Institutional Repository > 工學院 > 土木工程研究所 > 期刊論文 > Item 987654321/26307

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/26307

题名:	A 3-D image detection method of a surface opening crack in concrete using ultrasonic transducer arrays
作者:	Chang,YF;Wang,CY
贡献者:	土木工程研究所
关键词:	N/A
日期:	1997
上传时间:	2010-06-29 17:10:26 (UTC+8)
出版者:	中央大學
摘要:	The detection of the size and the location of existing three dimensional cracks in a concrete structure is an important topic in civil engineering. In this paper, a multisource, multireceiver method that considers the travel times diffracted by a crack tip is introduced, to backcalculate a 3-D image of the crack tip of a surface opening crack. The possible location of the crack tip front is on the surface of an ellipsoid, which is constructed by a fixed travel time length measured from the source to the receiver, by letting the source and receiver points be the foci of the corresponding ellipsoid. If the locations of the source and the receiver, together with the associated measured travel time of the diffracted echo between each source-receiver pair are known, the image of the tip can be determined by counting the number of intersections of the ellipsoidal surfaces in an image construction cellular structure. The backcalculated crack tip image, as seen from experimental data, match the dimensions of the real crack very well, demonstrating the capability and accuracy of this newly proposed multisource, multireceiver method for concrete NDE.
關聯:	JOURNAL OF NONDESTRUCTIVE EVALUATION
显示于类别:	[土木工程研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	611	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....