The Paton Welding Journal, 2007, №01

2007 №01 (06)

2007 №01 (08)

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The Paton Welding Journal, 2007, #1, 31-35 pages

Peculiarities of detection of defects in fbw joints on pipes by ultrasonic inspection

S.I. Kuchuk-Yatsenko, V.P. Radko, B.I. Kazymov, I.V. Zyakhor, A.V. Nikolnikov

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
It is shown that the echo-reflection method involving transducers connected in tandem is an efficient method for ultrasonic inspection of large-diameter thick-walled pipes. For inspection of small-diameter thin-walled pipes, it is expedient to use chord-type TR transducers. Echo signals from defects and interferences in the form of bulges are shown to differ in time of arrival, which allows reliable identification of defects and interferences from the bulges formed as a result of displacement of the weld edges or reinforcement remaining after flash removal.
Keywords: automatic flash butt welding, welded joints, ultrasonic inspection, quality, defects, procedure, false signals, detectability of defects

References

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4. Mazur, I.I., Serafin, O.M., Karpenko, M.P. (1988) Resistance welding of pipelines: ways of improvement. Stroitelstvo Truboprovodov, 4, 8–11.
5. Radko, V.P., Troitsky, V.A., Kazymov, B.I. et al. (2006) Study and peculiarities of detection of oxide film type defects by ultrasonic inspection of flash butt welded joints. In: Proc. of Sci.- Techn. Conf, and Exhibition on Nondestructive Testing and Technical Diagnostics (Kyiv, April 10–14, 2006). Kyiv.
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Suggested Citation

S.I. Kuchuk-Yatsenko, V.P. Radko, B.I. Kazymov, I.V. Zyakhor, A.V. Nikolnikov (2007) Peculiarities of detection of defects in fbw joints on pipes by ultrasonic inspection. The Paton Welding J., 01, 31-35.

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