Hengchang Jing
College of Management, Henan University of Science and Technology, Luoyang, 471003, China
ABSTRACT
Concrete structures were used in civil engineering wildly. In ultrasonic test for concrete structures, B-scan was a preliminary method to display the results of concrete detection which could give a original, poor resolution graphic display of the inner structure because of some kinds of disturbing noise by low-frequency detection. Synthetic Aperture Focusing Technique (SAFT) was one of effect methods in the area, however, when B-scan data were processed by SAFT, wavepacket would be further elongated because low-frequency detection signal covers a relative long period. Therefore, Wavepacket Decomposition Technique (WDT), which could use a few parameters to describe the original signal so that it could avoid the processing of the whole time history of signals, was introduced here to solve this problem. Better focusing effect could be achieved and imaging resolution could be enhanced by combining SAFT with WDT. Numerical simulation and experimental results have proved the efficiency of the technology. Imaging resolution is improved obviously and the embedded object in a test specimen is located accurately.
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How to cite this article
Hengchang Jing, 2013. Improving SAFT Imaging Technology for Ultrasonic Detection of Concrete Structures. Journal of Applied Sciences, 13: 4363-4370.
DOI: 10.3923/jas.2013.4363.4370
URL: https://scialert.net/abstract/?doi=jas.2013.4363.4370
DOI: 10.3923/jas.2013.4363.4370
URL: https://scialert.net/abstract/?doi=jas.2013.4363.4370
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