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Improved iterative algorithm for ultrasonic computerized tomography of concrete(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年06期
Page:
69-73
Research Field:
Publishing date:
2009-12-20

Info

Title:
Improved iterative algorithm for ultrasonic computerized tomography of concrete
Author(s):
SONG Huan-sheng; QI Xiu-zhen; LI Jia-hui; ZHAO Xiang-mo
School of Information Engineering,Chang’an University,Xi’an 710064,Shaanxi,China
Keywords:
structure engineering;  concrete;  nondestructive testing (NDT);  image reconstruction;  computerized tomography;  iterative algorithm
PACS:
TP391.41
DOI:
-
Abstract:
In order to enhance the speed and to improve the accuracy of the ultrasonic computerized tomography of concrete, an improved algebraic reconstruction technique (IART) is presented. In IART algorithm, the defect probability of each unit is accounted based on the detected data. Then, the images of concrete structures are initialized, and the error of detected data is distributed depend on the probability. The results show that the IART algorithm is effective to control wave velocity dispersion and to improve the accuracy of computation and the quality of image reconstruction on concrete; the IART algorithm is more accurate for reflecting the internal structure of concrete. 2 tabs, 4 figs, 8 refs.

References:

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Memo

Memo:
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Last Update: 2009-12-20