Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) for Nondestructive Evaluation of Conducting Materials

Grochowalski, Jacek Michał; Chady, Tomasz

doi:10.3390/ma14185311

Open AccessArticle

Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) for Nondestructive Evaluation of Conducting Materials

by

Jacek Michał Grochowalski

^*

and

Tomasz Chady

^*

Faculty of Electrical Engineering, West Pomeranian University of Technology, 70-313 Szczecin, Poland

^*

Authors to whom correspondence should be addressed.

Materials 2021, 14(18), 5311; https://doi.org/10.3390/ma14185311

Submission received: 21 July 2021 / Revised: 4 September 2021 / Accepted: 13 September 2021 / Published: 15 September 2021

(This article belongs to the Special Issue Micro Non-destructive Testing and Evaluation)

Download

Browse Figures

Versions Notes

Abstract

This paper presents a new method for nondestructive testing—a pulsed multifrequency excitation and spectrogram eddy current testing (PMFES-ECT), which is an extension of the multifrequency excitation and spectrogram eddy current testing. The new method uses excitation in the form of pulses repeated at a specified time, containing several periods of a waveform consisting of the sum of sinusoids with a selected frequency, amplitude and phase. This solution allows the maintenance of the advantages of multifrequency excitation and, at the same time, generates high energy pulses similar to those used in pulse eddy current testing (PECT). The effectiveness of the new method was confirmed by numerical simulations and the measurement of thin Inconel plates, consisting of notches manufactured by the electric-discharge method.

Keywords: multifrequency excitation and spectrogram eddy current testing; pulsed eddy current testing; nondestructive testing

Share and Cite

MDPI and ACS Style

Grochowalski, J.M.; Chady, T. Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) for Nondestructive Evaluation of Conducting Materials. Materials 2021, 14, 5311. https://doi.org/10.3390/ma14185311

AMA Style

Grochowalski JM, Chady T. Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) for Nondestructive Evaluation of Conducting Materials. Materials. 2021; 14(18):5311. https://doi.org/10.3390/ma14185311

Chicago/Turabian Style

Grochowalski, Jacek Michał, and Tomasz Chady. 2021. "Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) for Nondestructive Evaluation of Conducting Materials" Materials 14, no. 18: 5311. https://doi.org/10.3390/ma14185311

APA Style

Grochowalski, J. M., & Chady, T. (2021). Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) for Nondestructive Evaluation of Conducting Materials. Materials, 14(18), 5311. https://doi.org/10.3390/ma14185311

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Menu

Pulsed Multifrequency Excitation and Spectrogram Eddy Current Testing (PMFES-ECT) for Nondestructive Evaluation of Conducting Materials

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI