Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
권호 표지
DOI QR코드

DOI QR Code

Radial Variation of Sound Absorption Capability in the Cross Sectional Surface of Yellow Poplar Wood

백합나무 횡단면 흡음성능의 방사방향 변이

  • Kang, Chun-Won (Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Chonbuk National University) ;
  • Lee, Youn-Hun (Department of Mathematics, College of Natural Science, Chonbuk National University) ;
  • Kang, Ho-Yang (Department of Biobased Materials, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Kang, Wook (Department of Wood Science and Engineering, College of Agriculture and Life Science, Chonnam National University) ;
  • Xu, Huiran (Department of Wood Science and Engineering, College of Agriculture and Life Science, Chonnam National University) ;
  • Chung, Woo-Yang (Department of Wood Science and Engineering, College of Agriculture and Life Science, Chonnam National University)
  • 강춘원 (전북대학교 생활과학대학 주거환경학과, 전북대학교 인간생활과학연구소) ;
  • 이용훈 (전북대학교 자연과학대학 수학과) ;
  • 강호양 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 강욱 (전남대학교 농업생명과학대학 임산공학과) ;
  • 서혜란 (전남대학교 농업생명과학대학 임산공학과) ;
  • 정우양 (전남대학교 농업생명과학대학 임산공학과)
  • Received : 2011.04.11
  • Accepted : 2011.07.07
  • Published : 2011.07.25
Download PDF
⟨ Previous Next ⟩

Abstract

Radial variation of sound absorption capability and air permeability of yellow poplar (Liriodendron tulipifera) wood in cross sectional surface and effect of steam explosion treatment were estimated by the two microphone transfer function method and the capillary flow porometry, respectively. The sound absorption coefficients of steam explosion treated wood was higher than those of control wood and these values increased with frequency. Abundant and big vessel may behave as sound absorbing pore observed on the cross sectional surface of yellow poplar wood. The sound absorption coefficients and air permeability of sapwood were higher than those of heartwood for Liriodendron tulipifera.

국산 산공재 중 구조적 특징이 목재흡음에 적합하다고 생각되는 백합나무 목재 횡단면의 흡음성능과 기체투과성의 방사방향 변동과 폭쇄처리 영향을 관찰하고자 무처리와 폭쇄처리 목재원반에서 방사방향위치가 다른 원형시험편을 채취하여 전달함수법과 CFP (capillary flow porometry)법으로 흡음율과 기체투과성을 각각 측정, 비교하였다. 측정주파수범위에서 폭쇄처리 횡단면의 흡음율이 무처리재보다 높은 흡음성능을 나타내었으며 횡단면에서는 대경 도관이 다수 존재하여 다공질형흡음에 유용한 연속된 모세관이 다량 존재하는 사실을 확인할 수 있었다. 방사방향으로는 심재부위에서 채취한 시험편보다 변재부위에서 채취한 시험편의 흡음계수가 높은 흡음율을 나타내었으며, 기체투과성도 변재부위가 심재부위보다 높은 수치를 나타내었다.

Keywords

References

  1. 강춘원, 박희준. 2001. 공명흡음에 의한 목재와 목질보드의 흡음성능개선. 목재공학 29(1): 16-21
  2. 강춘원, 이남호. 2005. 탈리그닌처리에 의한 목재의 흡음성능과 구조적특징의 변화. 목재공학 33(4): 9-14
  3. 강춘원, 강욱, 정인수, 박희준, 전순식. 2008. 버섯폐골목의 흡음성능과 구조적특징. 목재공학 36(1): 54-60. https://doi.org/10.5658/WOOD.2008.36.1.054
  4. 강춘원, 강욱, 김광철. 2010. 고흡음성 목재의 흡음성능과 구조적특징. 목재공학 38(3): 54-60. https://doi.org/10.5658/WOOD.2010.38.4.292
  5. 박상진. 1981. 환공재 주요구성요소의 방사방향변동. 목재공학 9(3): 1-6.
  6. 지우근, 김규혁. 1996. 북양침엽수재의 공기투과성. 목재공학 24(4): 22-31.
  7. 한철수. 1987. 주요산공재 구성요소의 방사방향 변동에 관한 연구. 목재공학 15(2): 26-22.
  8. Akshaya Jena and Krishna Gupta. Characterization of pore structure of filtration media. 2002. Fluid/particle Separation Journal. 14(3): 227-241.
  9. Con Wassilieff. 1996. Sound Absorption of Wood-Based Materials. Applied Acoustics. 48(4): 339-356. https://doi.org/10.1016/0003-682X(96)00013-8
  10. Chunwon Kang, Wook Kang, Wooyang Chung, Junji Matsumura, and Oda Kazuyuki. 2008. Changes In Anatomical Features, Air Permeability And Sound Absorption Capability Of Wood By Delignification Treatment. J. Fac. Agr., Kyushu Univ. 53(2): 479-483.
  11. Chunwon Kang, Gwangchul Kim, Heejun Park, Namho Lee, Wook Kang, and Junji Matsumura. 2010. Changes in permeability and sound absorption capability of yellow popla wood by steam explosion treatment. J. Fac. Agr., Kyushu Univ. 55(2): 327-332.
  12. Erickson, H. D. 1970. permeability of southern pine wood. Wood Sci. 2(3): 149-158.
  13. Kanazawa, Y, Hayashi K, and Yasuzima, A. 1992. Improvement of dryability by local steam explosion for Japanese cedar. Proceedings of the 3rd IUFRO International Wood Drying Conference, Vienna, pp. 269-276.
  14. Perng, W. R. and L. P. Sebastian. 1983. Variation of permeability and penetrability within a red spruce tree. Mokuzai Gakkaishi 29(3): 197-204.
  15. Watanabe, T. T. Matsumoto. N. Kinoshita, and H. Hayashi. 1967. Acoustical study of woods and wood products. J. Japan Wood Res. Soc. 13(5): 177-182.
  16. Zhen Kai Xie, Teruyuki Ikeda, Yoshiyuki Okuda, and Hideo Nakamura. 2004. Characteristics of sound absorption in lotus-type porous magnesium., J. of the Japan Society of Applied Physics. 43(10): 7315-7319. https://doi.org/10.1143/JJAP.43.7315
  17. Yang hanseung, Daejun Kim, Yongkyu Lee, Hyunjoong Kim, JInyong Jeon, and Chunwon Kang. 2004. Possibility of using waste tire composites reinforced with rice straw as construction materials. Bioresource Technology 95(2004): 61-65. https://doi.org/10.1016/j.biortech.2004.02.002

Cited by

  1. Sound Absorption Capability and Bending Strength of Miscanthus Particle Based Board vol.40, pp.1, 2012, https://doi.org/10.5658/WOOD.2012.40.1.38
  2. Effect of Flame Resistant Treatment on The Sound Absorption Capability of Sawdust-mandarin Peel Composite Particleboard vol.43, pp.4, 2015, https://doi.org/10.5658/WOOD.2015.43.4.511