The amplitude-frequency measurement in non-destructive testing using the eddy current method

Adam Kondej, Artur Szczepański

Abstrakt


The paper describes a miniaturized device that records changes in voltage amplitude and signal frequency. After applying the measuring probe to the surface of the tested material, the voltage and frequency amplitude changes. In a place free from defects and nonconformities values of voltage amplitude and frequency are taken as reference values, with which the results obtained during further tests are compared. A clear change in the value of any of the parameters indicates a change in the condition of the tested material. Registration of two parameters with different sensitivityfor selected factors allows for a more accurate analysis of the condition of the testedmaterial. The miniaturized device can works in manual measurement mode or in auto-matic mode, it can be used in defectoscopy, structure and thickness measurements.


Słowa kluczowe


eddy current; amplitude-frequency measurement; discontinuities detection

Pełny tekst:

PDF (English)

Bibliografia


J. Garcia-Martin, J. Gómez-Gil, E. Vázquez-Sánchez, Non-Destructive Techniques Based on Eddy Current Testing, Sensors (2011), no. 11, 2525-2565.

M. Sirois, M. Bouchard, A. Raude, R. Boba, Korozja naprężeniowa – kiedy głębokość wady ma znaczenie, Badania Nieniszczące i Diagnostyka (2017), nr 3, 43-46.

A. Sophian, G. Tian, M. Fan, Pulsed Eddy Current Non-destructive Testing and Evaluation: A Review, Chinese Journal of Mechanical Engineering (2017), nr 30, 500-514.

Urząd Dozoru Technicznego, website, www.udt.gov.pl/prady-wirowe-guided-waves (accessed: 06.07.2018).

A. Lewińska-Romicka, Badania materiałów. Metoda prądów wirowych, Biuro Gamma, Warszawa (2007).

A. Lewińska-Romicka, Badania nieniszczące. Podstawy defektoskopii, Wydawnictwa Naukowo-Techniczne, Warszawa (2001).

Norma Europejska PN-EN ISO 15549, Non-destructive testing – Eddy current testing – General principles (2011).

A. Kondej, M. Baranowski, K. Niedźwiedzki, S. Jończyk., A. Szczepański, Automatyczne stanowisko do badań nieniszczących metodą prądów wirowych, Inżynieria Powierzchni (2014), nr 1, 57-62.




DOI: http://dx.doi.org/10.26628/wtr.v90i11.973

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