Time – frequency dynamic characteristics 2D in the quality assessment of welded joints

• Autorzy: Szeleziński A. , Muc A. , Murawski L.

Identyfikatory

DOI

10.5604/01.3001.0012.2855

• Języki publikacji: EN

Abstrakty

EN

The authors of the article have been looking for a new parameters and dynamic characteristics, which can be applied to non-destructive testing of welded joints. All characteristics have been based on recorded data generated during the vibration tests of welded joints with and without failures. The article deals with the methods of assessing welding joints using 2D: time – frequency dynamic characteristics. A calculation procedure used for analysing simultaneous changes of the response modules, registered by acceleration sensors was presented. Vibrations amplitudes were transformed to a function of time and frequency (simultaneously) and presented over 2D time – frequency characteristics. The analyses of the characteristics were performed for a plate without any welded joint, for a plate with non-defected welded joint and for a plate with a welded joint defected by an edge bonding. Having analysed registered 2D time – frequency dynamic characteristics it can be noticed that presenting the responses analysed simultaneously over the time and frequency allows evaluating if examined system maintains non-linearity and, at the same time, it allows to indirectly assess the quality of the welded joint. The proposed measure parameters of the quality of a welded joint can be defined as a dispersion of colours on the obtained characteristics. The faults (and the vibration nonlinearity) of the welded joints is bigger if the dispersion is greater.

Słowa kluczowe

EN

welding; welded joints; non-destructive testing; NDT; SHM; vibrations; time–frequency characteristics

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2018
• Tom: Vol. 25, No. 2
• Strony: 357--361
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Szeleziński A.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83 – 87, 81-225 Gdynia, Poland tel.:[phone], fax: [phone]

autor

Muc A.

• Gdynia Maritime University, Faculty of Electrical Engineering Morska Street 83 – 87, 81-225 Gdynia, Poland tel.: [phone]

autor

Murawski L.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83 – 87, 81-225 Gdynia, Poland tel.:[phone], fax: [phone]

Bibliografia

• [1] Szeleziński, A., Murawski, L., Muc, A., Gesella, G., Wybór końcówki młotka modalnego i miejsca uderzenia w badaniach metodą drganiową płyt spawanych, Zeszyt Naukowe Akademii Morskiej w Gdyni, 96, 2016.
• [2] Szeleziński, A., Murawski, L., Muc, A., Analysis of ability to detect defects in welding structures with usage of dynamic characteristics spectrums, Journal of KONES Powertrain and Transport, Vol. 23, No. 2, Warsaw 2016.
• [3] Szeleziński, A., Muc, A., Murawski, L., Quality assessment of welded joints using the mean value distribution of amplitude spectrums calculated by the time window method, Journal of KONES Powertrain and Transport, Vol. 24, No. 2, Warsaw 2017.
• [4] Szeleziński, A. Muc, A., Murawski, L., Analysis concerning changes of structure damping in welded joints diagnostics, Journal of KONES Powertrain and Transport, Vol. 24, No. 4, Warsaw 2017.
• [5] Lewicka – Romicka, A., Badania nieniszczące, Podstawy defektoskopii, Wydawnictwo Naukowo-Techniczne, Warszawa 2001
• [6] Krajewski, A., Hudycz, M., Zapewnienie jakości i kontrola złączy spajanych, Oficyna Wydawnicza Politechniki Warszawskiej, Warszawa 2015.
• [7] Cuchryj, J., Badania złączy spawanych wg norm europejskich, Biuro Gamma, Warszawa 2003.
• [8] Muc, A., Murawski, L., Szeleziński, A., Methods of cracks detection in marine structures’ welded joints based on signals’ time waveform analysis, Brodogradnja/Shipbilding, in press, Vol. 69, No. 3, 2018.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).