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Development and Performance Evaluation of Immersion Phased Array Ultrasonic Transducer for Detecting Flaw of Alloy Steel Billet

Authors
Jeon, Won PyoKim, Gab Soon
Issue Date
Apr-2020
Publisher
KOREAN SOC NONDESTRUCTIVE TESTING
Keywords
Billet; Non-destructive inspection; Phased array ultrasonic inspection; Artificial flaw; CIVA software
Citation
JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING, v.40, no.2, pp 130 - 138
Pages
9
Indexed
ESCI
KCI
Journal Title
JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING
Volume
40
Number
2
Start Page
130
End Page
138
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/6789
DOI
10.7779/JKSNT.2020.40.2.130
ISSN
1225-7842
2287-402X
Abstract
Ultrasonic testing of an alloy steel billet in a steel mill has been conducted by multi single element by multi single element ultrasonic testing. However, single ultrasonic testing method has the problem of coupling errors caused by unstable water coupling law detections also reduced by the ultrasonic angle of incidence because of friction on the guide shoe and the billet surface during continuous inspection. In this study, an immersion phased array ultrasonic testing technique is applied to the billet to solve the problems with signal ultrasonic testing techniques and increase test reliability. To achieve this objective, the immersion array ultrasonic transducer was designed and fabricated by CIVA simulation software, and compared with artificial flaws specimens in the performance test. The performance test results show that the developed immersion phased-array ultrasonic transducer is four times more capable of confirming the signal-to-noise ratio compared with signal ultrasonic testing techniques, and is applicable to automated immersion testing of billets.
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Kim, Gab Soon
IT공과대학 (제어로봇공학과)
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