Application of an Ultra-Compact Eddy-Current Transducer for Investigation of Defects in Welded Joints of High-Strength Steel

Abstract:

This article discusses the results of work on the creation of a flaw detection unit, which is focused on the study of high-strength steels. Welded joints of transformer tanks, which are made of steel grade 08G2B, were selected as the object of research. We chose this grade because of the ultra-low carbon content of this material. This opens up opportunities for the application of eddy current nondestructive testing methods. For practical measurements, a scanning device was designed and optimized. It includes a converter that uses the principles of eddy currents and includes three coils assembled on a ferrite core, grade 80NMZ. The device was tested on samples with model continuity defects (cracks and holes). Also, within the framework of the publication, modeling of corrosion defects in welded joints was carried out.

• Periodical: Materials Science Forum (Volume 1037)
• Pages: 400-408
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1037.400
• Online since: July 2021
• Authors: Vladimir N. Malikov, Alexey V. Ishkov*, Leonid Nikonov
• Keywords: Eddy Current Nondestructive Testing, Electromagnetic Induction, Flaw Detection, Ultra-Low Carbon Steels

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