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Titolo:
Some possibilities for reducing circular saw idling noise
Autore:
Beljo-Lucic, R; Goglia, V;
Indirizzi:
Univ Zagreb, Fac Forestry, Zagreb 10002, Croatia Univ Zagreb Zagreb Croatia 10002 eb, Fac Forestry, Zagreb 10002, Croatia
Titolo Testata:
JOURNAL OF WOOD SCIENCE
fascicolo: 5, volume: 47, anno: 2001,
pagine: 389 - 393
SICI:
1435-0211(2001)47:5<389:SPFRCS>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
VIBRATION; SOUND; TEETH;
Keywords:
idling circular saw; whistling noise; noise level; rubber damping rings;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Beljo-Lucic, R Univ Zagreb, Fac Forestry, POB 422, Zagreb 10002, Croatia Univ Zagreb POB 422 Zagreb Croatia 10002 eb 10002, Croatia
Citazione:
R. Beljo-Lucic e V. Goglia, "Some possibilities for reducing circular saw idling noise", J WOOD SCI, 47(5), 2001, pp. 389-393

Abstract

The sound pressure level of differently designed circular saw blades were investigated during idling. Nine blade samples were used: three differentlydesigned blade bodies (without slots, with four radial slots, and with four slots with copper cork), each with three diameters (260, 280, and 300mm). The sound pressure level was measured at different rotational frequencies ranging from 25 to 65 rps in increments of 1 rps. Rubber damping rings 80 mm in diameter and 0.3mm thick were placed between the saw blade and the collars, and the emitted noise was measured. Because of the whistling sound the blades without slots emitted high sound pressure levels. There were no significant changes when rubber damping rings were used. The use of rubber damping rings on the samples with radial slots eliminates the whistling noise. The saws with copper corks did not emit a whistling noise at all, and their aerodynamic noise was 2-3dB(A) lower than them aerodynamic noise of the saws with radial slots. The relation between sound pressure emitted by the damped idling saw and peripheral velocity can be described by the power function with the exponent value between 4.8 and 5.2.

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Documento generato il 29/03/20 alle ore 15:20:40