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Home > Issues > RetrieveNovel Time-Domain Parameters for Detection and Classification of Flaws Using Pulsed Eddy Current Technique
Journal of Magnetics, Volume 25, Number 3, 30 Sep 2020, Pages 434-439
K. Sambasiva Rao (Department of Electronics and Communication Engineering, Madanapalle Institute of Technology & Science), T. V. Beatriceveena (Homi Bhabha National Institute, Anushakti Nagar), C. S. Angani (Department of Electronics and Physics, GIS, GITAM Deemed to be University), Lucky Agarwal * 
(School of Electronics Engineering, Vellore Institute of Technology)
(School of Electronics Engineering, Vellore Institute of Technology)
Abstract
Pulsed eddy current (PEC) testing is an electromagnetic nondestructive evaluation (NDE) technique which is
used for detection and classification of flaws. This paper presents an approach for the extraction of novel timedomain
flaw parameters viz. amplitude ratio (V1/V0) and time constant (τ) for detection and classification of
different flaws. Experiments are carried out on stainless steel (SS-316) plate with artificial EDM notches whose
width (1.0 mm & 3.0 mm) and depth (1.0 mm to 6.0 mm) varied. The proposed approach can classify both surface
and sub-surface flaws in an 8.0 mm thick SS plate. The advantage of the proposed approach is that it
doesn’t require a reference signal subtraction or signal processing methodologies for the detection and classification
of flaws.
used for detection and classification of flaws. This paper presents an approach for the extraction of novel timedomain
flaw parameters viz. amplitude ratio (V1/V0) and time constant (τ) for detection and classification of
different flaws. Experiments are carried out on stainless steel (SS-316) plate with artificial EDM notches whose
width (1.0 mm & 3.0 mm) and depth (1.0 mm to 6.0 mm) varied. The proposed approach can classify both surface
and sub-surface flaws in an 8.0 mm thick SS plate. The advantage of the proposed approach is that it
doesn’t require a reference signal subtraction or signal processing methodologies for the detection and classification
of flaws.
Keywords: pulsed eddy current; amplitude ratio; time constant; flaws and classification
DOI: https://doi.org/10.4283/JMAG.2020.25.3.434
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