A Comparison of Ultrasonics and Radiography for Weld Inspection
Since the 1940’s, the accepted inspection method for structural welds in the U.S. Navy has been radiography (RT). This technique has been accepted as an inspection method for welds since the 1940’s. A major advantage of radiography compared to other inspection techniques is the availability of objective quality evidence, the radiograph, as a permanent record of the inspection. Radiography has gained precedence as the inspection method to prescribe for these welds because this permanent record is perceived to evince all discontinuities and facilitates auditing. This technique and the criteria used to accept or reject discontinuities have generally proved adequate although technical limitations and cost disadvantages have been encountered.
KeywordsAcceptance Criterion Radiographic Technique Inspection Method Ultrasonic Inspection Inspection Technique
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- 1.Jessop, T.J., P.J. Mudge, and J.D. Harrison, “Ultrasonic Measurement of Weld Flaw Size,” The Welding Institute, National Cooperative Highway Research Program Report 242, (Dec 1981).Google Scholar
- 2.Ruescher, E.H., and H.C. Graber, “Analysis of Radiographic Evaluation of PVRC Weld Specimens 155,202,203,and 251 J,” Weld Research Council Bulletin 259, (June 1980). Google Scholar
- 3.Pawlowski, Z., J. Szelazek, and J. Gorzny, “Dimensioning, Identification and Evaluation of Weld Defects with Ultrasonics,” in Proceedings of 9th World Conference on NDT, Melbourne, Australia (1979). Google Scholar
- 4.Marais, J.J., “Defect Assessment by Means of Nondestructive Testing,” in Proceedings of the First National Conference on Fracture. Johannesburg, South Africa (1979).Google Scholar
- 5.Lundin, C.D., “The Significance of Weld Discontinuities — A Review of Current Literature,” Welding Research Bulletin (December 1976).Google Scholar
- 6.Forli, O, B. Hansen, S. Kjellander, B. Pettersen and T. Anstrom, “A Comparison of Radiographic and Ultrasonic NDE,” Nordtest Report 72–76 (1983).Google Scholar
- 7.Juva, A., “Comparison Between Shear Wave Ultrasonic Examination and Radiographic Examination of Some Austenitic StainlessSteel Pipe Welds,” Technical Research Center of Finland Metals Laboratory Report, (1979).Google Scholar