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Official Journal of the Japan Wood Research Society

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Idling noise from circular saws made of metals with different damping capacities

Abstract

Circular saw construction using materials with high internal damping has been found to be an effective way to suppress whistling noise during saw idling. A high-damping alloy called Silentalloy (12Cr-3Al-Fe) was previously shown to be an effective material for this purpose. Tests with Silentalloy suggested that a logarithmic decrement of at least 0.07 is needed. Silentalloy does have some disadvantages, such as modest strength, difficult heat treatability, and “special order” status. The purpose of these experiments was to confirm the general applicability of the minimum effective logarithmic decrement of 0.07 and to find more practical metals for saw-blade construction. Three commercially available metals of different damping capacity were selected. The idling noises of saws made of these metals were compared with those of saws made of typical saw steel and Silentalloy. The minimum logarithmic decrement for whistling-noise suppression was found to be approximately 0.01. On a logarithmic scale, this value is similar to the 0.07 value previously found for a Silentalloy saw. A ferromagnetic steel (20Cr-3A1-Fe) was found to be a useful alternative to Silentalloy from the viewpoint of strength, but the cost of this steel makes it unsuitable for mass production. The success in identifying an effective alternative material to Silentalloy provides encouragement for the identification of other high-damping alloys among the 13Cr-Fe to 18Cr-Fe series without the cost disadvantage of ferromagnetic steel.

References

  1. 1.

    Pahlitzsch G, Meins W (1960) Gerduschunterschungen an einer Kreissägemaschine. Holz Zentralbl Messeheft 86:64–66, 71–72

    Google Scholar 

  2. 2.

    Cudworth A (1960) Quieting circular saws. Noise Control 6:26–30, 52

    Article  Google Scholar 

  3. 3.

    Mote C, Leu M (1980) Whistling instability in idling circular saws. J Dyn Syst Meas Control 102:114–122

    Article  Google Scholar 

  4. 4.

    Pahlitzsch G, Rowinski B (1967) Über das Schwingungsverhalten von Kreissägeblättern. 4 Mitteilung: Ursachen des Pfeifens von Kreissägeblättern und Maßnahmen zu seiner Vermeidung. Holz Roh Werkst 25:393–397

    Article  Google Scholar 

  5. 5.

    Pahlitzsch G, Rowinski B (1967) Über das Schwingungsverhalten von Kreissägeblättern. Dritte Mitteilung: Schwingungen der Sägeblätter im Schnitt und Dämpfung. Holz Roh Werkst 25:348–357

    Article  Google Scholar 

  6. 6.

    Dugdale D (1969) Discrete frequency noise from free running circular saws. J Sound Vibration 10:296–304

    Article  Google Scholar 

  7. 7.

    Taki K, Kimura S, Fukui H, Toshima Y (1975) Saw noise. I. Free running noise (in Japanese). Mokuzai Gakkaishi 21:68–75

    Google Scholar 

  8. 8.

    Hattori N, Izumi S, Noguchi M (1986) Suppression of whistling noise in idling circular saws. Acoustics Lett 9(8):120–122

    Google Scholar 

  9. 9.

    Sugimoto K (1974) Recent advances in high damping alloys (in Japanese). Tetsu to Ko 60:2203–2220

    CAS  Article  Google Scholar 

  10. 10.

    Fujiyoshi Y (1988) Rotating plate with damping mechanism (in Japanese). Japan patent 63-1501

  11. 11.

    Saljé E, Bartsch U, Plester J (1979) Lärmminderung beim Sägen durch Verbundsysteme. HK 14:788–789

    Google Scholar 

  12. 12.

    Hattori N, Izumi S, Noguchi M (1987) Suppression of the whistling noise in tungsten carbide-tipped circular saws using a high-damping alloy (in Japanese). Mokuzai Gakkaishi 33:268–273

    Google Scholar 

  13. 13.

    Hattori N, Fujita T (1987) Circular saw (in Japanese). Japan patent 61-56217

  14. 14.

    Amano K, Fujita T, Nakagawa M (1975) High-damping metal “Silentalloy”, a new product (in Japanese). Toshiba Rev 30:572–574

    Google Scholar 

  15. 15.

    Hattori N, Ando K, Kitayama S, Nakashima K (1993) Suppression of the whistling noise in circular saws using a newly-developed high-damping alloy. Mokuzai Gakkaishi 39:891–896

    Google Scholar 

  16. 16.

    Hattori N, Iida T, Noguchi M (1991) Idling noise of tipped circularsaws made of “Silentalloy” with different damping capacities (in Japanese). Mokuzai Gakkaishi 37:177–180

    Google Scholar 

  17. 17.

    Nishizawa Y, Sudo H (1982) In: Japan Institute of Metals: Steel material, Kinzoku Binran (in Japanese). Maruzen, Tokyo, pp 733–864

    Google Scholar 

  18. 18.

    Kondo M, Fujita T (1967) In: Japan Institute of Metals and Iron and Steel Institute of Japan: Stainless steel, Tool steel, Tekkozairyo Binran (in Japanese). Maruzen, Tokyo, pp 607–641, 731–796

    Google Scholar 

  19. 19.

    Hattori N, Noguchi M (1992) Suppression of the whistling noise in circular saws using “Silentalloy”. Wood Sci Technol 26:449–459

    CAS  Article  Google Scholar 

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Correspondence to Nobuaki Hattori.

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Hattori, N., Iida, T. Idling noise from circular saws made of metals with different damping capacities. J Wood Sci 45, 392–395 (1999). https://doi.org/10.1007/BF01177911

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Key words

  • Circular saw
  • Whistling noise
  • Resonance Damping alloy
  • Noise