Measurement System for Studying Flaws in Alloy Slabs by Means of Subminiature Eddy-Current Transducers

S. F. Dmitriev; A. V. Ishkov; A. O. Katasonov; E. A. Kolubaev; V. N. Malikov; A. M. Sagalakov; L. I. Shevtsova

doi:10.1007/s11018-017-1204-5

Measurement System for Studying Flaws in Alloy Slabs by Means of Subminiature Eddy-Current Transducers

Authors: Dmitriev S.F.¹, Ishkov A.V.², Katasonov A.O.³, Kolubaev E.A.⁴, Malikov V.N.¹, Sagalakov A.M.¹, Shevtsova L.I.⁵
Affiliations:
1. Altai State University
2. Altai State Agrarian University
3. NPF Gamma-Test
4. Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS)
5. Novosibirsk State Technical University
Issue: Vol 60, No 4 (2017)
Pages: 372-375
Section: Electromagnetic Measurements
URL: https://journals.rcsi.science/0543-1972/article/view/246143
DOI: https://doi.org/10.1007/s11018-017-1204-5
ID: 246143

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Abstract

A measurement system based on subminiature eddy-current transducers is developed for local study of defects in aluminum-magnesium alloy plates. A modified Delianna filter is made which can greatly enhance the signal-to-noise ratio. A dependence of the response of the eddy-current transducer on flaws in the form of hidden slits and apertures inside the slabs is derived for excitation coil frequencies of 300–700 Hz.