Diagnostics of Circular Sawblade Vibration by Displacement Sensors

The paper deals with problems of the circular sawblade vibration. In the introductory part, theoretical bases are summarized to determine the form of vibrations and critical and resonant rotational frequency. A diagnostic method is proposed for the direct measurement of amplitudes of a circular sawb...

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Autores principales:	Přemysl Veselý, Zdeněk Kopecký, Zdeněk Hejmal, Přemysl Pokorný
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2012
Materias:	circular sawblade critical rotational speed resonant rotational speed vibration Fast Fourier Transform analysis Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/1128db94a6a64274b780f183db99e3c3
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id	oai:doaj.org-article:1128db94a6a64274b780f183db99e3c3
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spelling	oai:doaj.org-article:1128db94a6a64274b780f183db99e3c32021-12-02T00:51:58ZDiagnostics of Circular Sawblade Vibration by Displacement Sensors0012-67721847-1153https://doaj.org/article/1128db94a6a64274b780f183db99e3c32012-06-01T00:00:00Zhttp://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=124232https://doaj.org/toc/0012-6772https://doaj.org/toc/1847-1153The paper deals with problems of the circular sawblade vibration. In the introductory part, theoretical bases are summarized to determine the form of vibrations and critical and resonant rotational frequency. A diagnostic method is proposed for the direct measurement of amplitudes of a circular sawblade by displacement sensors with the subsequent Fast Fourier Transform (FFT) analysis. This method with the spectral analysis of a signal in the time area makes possible to determine the size and shape of vibration of a circular sawblade with respect to usability/applicability under operational conditions. Unlike standard methods, when the sawblade is excited by external sources, natural vibrations are used such as disk deformations and the dynamic unbalance of a circular sawblade, effects of chucking/gripping and machine vibration and, last but not least, the disk and sawn wood interaction.Přemysl VeselýZdeněk KopeckýZdeněk HejmalPřemysl PokornýUniversity of Zagreb, Faculty of Forestry and Wood Technologyarticlecircular sawbladecritical rotational speedresonant rotational speedvibrationFast Fourier Transform analysisForestrySD1-669.5ENDrvna Industrija, Vol 63, Iss 2, Pp 81-86 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	circular sawblade critical rotational speed resonant rotational speed vibration Fast Fourier Transform analysis Forestry SD1-669.5
spellingShingle	circular sawblade critical rotational speed resonant rotational speed vibration Fast Fourier Transform analysis Forestry SD1-669.5 Přemysl Veselý Zdeněk Kopecký Zdeněk Hejmal Přemysl Pokorný Diagnostics of Circular Sawblade Vibration by Displacement Sensors
description	The paper deals with problems of the circular sawblade vibration. In the introductory part, theoretical bases are summarized to determine the form of vibrations and critical and resonant rotational frequency. A diagnostic method is proposed for the direct measurement of amplitudes of a circular sawblade by displacement sensors with the subsequent Fast Fourier Transform (FFT) analysis. This method with the spectral analysis of a signal in the time area makes possible to determine the size and shape of vibration of a circular sawblade with respect to usability/applicability under operational conditions. Unlike standard methods, when the sawblade is excited by external sources, natural vibrations are used such as disk deformations and the dynamic unbalance of a circular sawblade, effects of chucking/gripping and machine vibration and, last but not least, the disk and sawn wood interaction.
format	article
author	Přemysl Veselý Zdeněk Kopecký Zdeněk Hejmal Přemysl Pokorný
author_facet	Přemysl Veselý Zdeněk Kopecký Zdeněk Hejmal Přemysl Pokorný
author_sort	Přemysl Veselý
title	Diagnostics of Circular Sawblade Vibration by Displacement Sensors
title_short	Diagnostics of Circular Sawblade Vibration by Displacement Sensors
title_full	Diagnostics of Circular Sawblade Vibration by Displacement Sensors
title_fullStr	Diagnostics of Circular Sawblade Vibration by Displacement Sensors
title_full_unstemmed	Diagnostics of Circular Sawblade Vibration by Displacement Sensors
title_sort	diagnostics of circular sawblade vibration by displacement sensors
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2012
url	https://doaj.org/article/1128db94a6a64274b780f183db99e3c3
work_keys_str_mv	AT premyslvesely diagnosticsofcircularsawbladevibrationbydisplacementsensors AT zdenekkopecky diagnosticsofcircularsawbladevibrationbydisplacementsensors AT zdenekhejmal diagnosticsofcircularsawbladevibrationbydisplacementsensors AT premyslpokorny diagnosticsofcircularsawbladevibrationbydisplacementsensors
_version_	1718403420185952256

Diagnostics of Circular Sawblade Vibration by Displacement Sensors

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