Advertisement

Journal of Wood Science

, Volume 63, Issue 6, pp 575–579 | Cite as

Effect of heat treatment temperature and time on sound absorption coefficient of Larix kaempferi wood

  • Hyunwoo Chung
  • Yonggun Park
  • Sang-Yun Yang
  • Hyunbin Kim
  • Yeonjung Han
  • Yoon-Seong Chang
  • Hwanmyeong Yeo
Original article

Abstract

Heat treatment improves the dimensional stability and hydrophobicity of wood, and heat-treated wood is currently attracting attention as a new interior material. However, there are few evaluations where the acoustic properties of heat-treated wood are reported when such wood is used as an interior material. In this study, Larix kaempferi wood, typically used as a building material, was heat-treated at 200, 220, and 240 °C for 9, 12, 15, and 18 h. The sound absorption coefficients of the treated wood samples were measured at 250, 500, 1000, 2000, and 4000 Hz in a reverberation room. The sound absorption coefficient increased with the treatment temperature and the treatment time. The results of this study showed that the high-frequency band range sound absorption coefficient of wood can be increased dramatically by heat treatment.

Keywords

Larch (Larix kaempferiReverberation room method Sound absorption coefficient Wood heat treatment 

Notes

Acknowledgements

The authors are grateful for the Grant provided by the Korea Forest Service ‘Forest Science and Technology Projects (Project no. S121315L010100)’.

References

  1. 1.
    Yoon K, Eom C, Park J, Kim H, Choi I, Lee J, Yeo H (2009) Color control and durability improvement of yellow poplar (Liriodendron tulipifera) by heat treatments. Mokchae Konghak 37(6):487–496Google Scholar
  2. 2.
    Militz H (2002) Heat treatment technologies in Europe: scientific background and technological state-of-art. In: Proceedings of conference on enhancing the durability of lumber and engineered wood products. Orlando, pp 11–13Google Scholar
  3. 3.
    Yildiz S, Yildiz C, Tomak D (2011) The effects of natural weathering on the properties of heat-treated alder wood. BioResour 6(3):2504–2521Google Scholar
  4. 4.
    Borůvka V, Zeidler A, Holeček T (2015) Comparison of stiffness and strength properties of untreated and heat-treated wood of Douglas fir and alder. BioResour 10(4):8281–8294Google Scholar
  5. 5.
    Wahyu H, Jang J, Park S, Qi Y, Febrianto F, Lee S, Kim N (2015) Effect of temperature and clamping during heat treatment on physical and mechanical properties of okan (Cylicodiscus gabunensis [Taub.] Harms) wood. BioResour 10(4):6961–6974CrossRefGoogle Scholar
  6. 6.
    Zwikker C, Kosten W (1949) Sound absorbing materials. Elsevier, New YorkGoogle Scholar
  7. 7.
    Biot A (1956) Theory of elastic waves in a fluid saturated porous solid. I. Low-frequency range. J Acoust Soc Am 28(2):168–178CrossRefGoogle Scholar
  8. 8.
    Biot A (1956) Theory of elastic waves in a fluid saturated porous solid. II. Higher frequency range. J Acoust Soc Am 28(2):179–191CrossRefGoogle Scholar
  9. 9.
    Lambert F (1982) Propagation of sound in highly porous open-cell foams. J Acoust Soc Am 73(4):1131–1138CrossRefGoogle Scholar
  10. 10.
    Allard F, Aknine A, Depollier C (1986) Acoustical properties of partially reticulated foams with high and medium flow resistance. J Acoust Soc Am 79(6):1734–1740CrossRefGoogle Scholar
  11. 11.
    Delany E, Bazley N (1969) Acoustical characteristics of fibrous absorbent materials. Natl Phys Lab Aero Rep Ac 37:105–116Google Scholar
  12. 12.
    Miki Y (1990) Acoustical properties of porous materials-modification of Delany-Bazley model. J Acoust Soc Jpn 11(1):19–22CrossRefGoogle Scholar
  13. 13.
    Allard F, Champoux Y (1992) New empirical equations for sound propagation in rigid frame fibrous materials. J Acoust Soc Am 91(6):3346–3353CrossRefGoogle Scholar
  14. 14.
    Cummings A, Beadle P (1993) Acoustic properties of reticulated plastic foams. J Sound Vib 175(1):115–133CrossRefGoogle Scholar
  15. 15.
    Wu Q (1988) Empirical relations between acoustical properties and flow resistivity of porous plastic open-cell foam. Appl Acoust 25:141–148CrossRefGoogle Scholar
  16. 16.
    Obataya E, Umezawa T, Nakatsubo F, Norimoto M (1999) The effects of water soluble extractives on the acoustic properties of reed (Arundo donax L.). Holzforsch 53(1):63–67CrossRefGoogle Scholar
  17. 17.
    Chang S, Chang H, Huang Y, Hsu F (2000) Effects of chemical modification reagents on acoustic properties of wood. Holzforsch 54(6):669–675CrossRefGoogle Scholar
  18. 18.
    Jiang Z, Zhao R, Fei B (2004) Sound absorption property of wood for five eucalypt species. J Forest Res 15(3):207–210CrossRefGoogle Scholar
  19. 19.
    Wang D, Peng L, Zhu G, Fu F, Zhou Y, Song B (2014) Improving the sound absorption capacity of wood by microwave treatment. BioResour 9(4):7504–7518Google Scholar
  20. 20.
    Zhu L, Liu Y, Liu Z (2016) Effect of high-temperature heat treatment on the acoustic-vibration performance of Picea jezoensis. BioResour 11(2):4921–4934Google Scholar

Copyright information

© The Japan Wood Research Society 2017

Authors and Affiliations

  1. 1.Department of Forest Sciences, College of Agriculture and Life SciencesSeoul National UniversitySeoulRepublic of Korea
  2. 2.National Institute of Forest ScienceSeoulRepublic of Korea
  3. 3.Research Institute of Agriculture and Life SciencesSeoul National UniversitySeoulRepublic of Korea

Personalised recommendations