Application of ultrasonic CT method in nondestructive detection of interior defects in large scale concrete structural member of bridge  

作　　者：Xiaopei ZHANG Jianhui QIU Jianjun NIU Lizhi DU Xuege WANG 

机构地区：[1]College of Construction Engineering, Jilin university, Changchun 130026, China [2]China Northeast Municipal Engineering Design and Research Institute, Changchun 130021, China China Northeast Municipal Engineering Design and Research Institute, Changchun 130021, China

出　　处：《Global Geology》2008年第4期218-221,共4页世界地质（英文版）

基　　金：Supported by Project of the National High Technology Research and Development Program of China(No.2007AA06Z215)

摘　　要：The ultrasonic computed tomography （USCT） method is derived from the basic principles of X-ray section scanning. This method records the arriving times of ultrasonic wave between the probes and the sources to ealculate the elastic wave velocity values in the section using the arrival times. Through analyzed the distribution Of elastic wave velocity in aim area, the information of the strength and the homogeneity of the investigated zone could be got indirectly. The authors introduced the operational principle of USCT and a practical case of using this method to detect the interior defects in large scale concrete structural member. Compared with other exploration methods, this method is more efficient and accurate.The ultrasonic computed tomography(USCT)method is derived from the basic principles of X-ray section scanning.This method records the arriving times of ultrasonic wave between the probes and the sources to calculate the elastic wave velocity values in the section using the arrival times.Through analyzed the distribution of elastic wave velocity in aim area,the information of the strength and the homogeneity of the investigated zone could be got indirectly.The authors introduced the operational principle of USCT and a practical case of using this method to detect the interior defects in large scale concrete structural member.Compared with other exploration methods,this method is more efficient and accurate.

关 键 词：Ultrasonic CT concrete structural member nondestructive detection 

分 类 号：TG115.28[金属学及工艺—物理冶金]