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Comparison of TOFD and Radiographic Testing for a Mock-up Specimen  

Kim, Chung-Jick (Seoul Inspection and Testing Company)
Jeon, Jong-Gun (Seoul Inspection and Testing Company)
Kim, Jin-Taek (Seoul Inspection and Testing Company)
Publication Information
Abstract
In order to detect the internal defects which occur in welding parts of pressure vessel and structures, radiographic testing and ultrasonic testing is applied. However, because of the risks of radiation exposure and film processing, radiographic testing takes a relatively long time to verify the test results and it has affected in the production process. Typically, the manual ultrasonic testing is not easy to reproduce the result and it is highly dependent on the tester's skills. The TOFD technique, one of the automatic ultrasonic testings is spreading alternatively. This research describes the comparing test results by applying radiographic testing and TOFD technique to a mock-up specimen incruding the flaws. The TOFD technique will contribute to improve the objective reliability of the ultrasonic technique.
Keywords
Time of Flight Diffraction(TOFD); Radiographic Testing; TOFD Image; Detection Ability;
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  • Reference
1 이순흠, 김선형, 공용해, 이원흠, 'TOFD 법에서의 근거리 분해능 향상에 관한 연구', 비파괴검사학회지, Vol. 19, No. 6, pp 420-425, (1999)
2 FORCE Technology, 'TOFD general principles & manual'
3 ASME Code Case 2235-9 ('05 App.), 'Use of ultrasonic examination in lieu of radiography'