Publication detail
Diagnostics of Circular Sawblade Vibration by Displacement Sensors
VESELÝ, P. KOPECKÝ, Z. HEJMAL, Z. POKORNÝ, P.
Czech title
Diagnostics of Circular Sawblade Vibration by Displacement Sensors
English title
Diagnostics of Circular Sawblade Vibration by Displacement Sensors
Type
journal article in Web of Science
Language
en
Original abstract
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 sensor 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.
Czech abstract
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 sensor 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.
English abstract
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 sensor 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.
Keywords in Czech
circular sawblade; critical rotational speed; resonant rotational speed; vibration; Fast Fourier Transform analysis
Keywords in English
circular sawblade; critical rotational speed; resonant rotational speed; vibration; Fast Fourier Transform analysis
RIV year
2012
Released
01.06.2012
Publisher
ZAGREB UNIV, FAC FORESTRY
Location
SVETOSIMUNSKA 25, ZAGREB, HRVATSKA 10000, CROATIA
ISSN
0012-6772
Volume
63
Number
2
Pages from–to
81–86
Pages count
6
BIBTEX
@article{BUT93945,
author="Přemysl {Pokorný},
title="Diagnostics of Circular Sawblade Vibration by Displacement Sensors",
year="2012",
volume="63",
number="2",
month="June",
pages="81--86",
publisher="ZAGREB UNIV, FAC FORESTRY",
address="SVETOSIMUNSKA 25, ZAGREB, HRVATSKA 10000, CROATIA",
issn="0012-6772"
}