References
- Beall, F.C. 2002. Overview of the use of ultrasonic technologies in research on wood properties. Wood Science and Technology 36(3): 197-212. https://doi.org/10.1007/s00226-002-0138-4
- Cavalli, A., Bevilacqua, L., Capecchi, G., Cibecchini, D., Fioravanti, M., Goli, G., Togni, M., Uzielli, L. 2016. MOE and MOR assessment of in service and dismantled old structural timber. Engineering Structures 125: 294-299. https://doi.org/10.1016/j.engstruct.2016.06.054
- Jang, S.S. 2000. Effects of moisture content and slope of grain on ultrasonic transmission speed of wood. Journal of the Korean Wood Science and Technology 28(2): 10-18.
- Kang, H., Booker, R.E., 2002. Variation of stress wave velocity with MC and temperature. Wood Science and Technology 36(1): 41-54. https://doi.org/10.1007/s00226-001-0129-x
- Kim, D.W., Hwang, S.W., Lee, W.H. 2014. A Study on The Mechanical Properties of Korean Red Pine (Geumgangsong, Pinus densiflora forma erecta Uyeki). Journal of the Korean Wood Science and Technology 42(1): 58-67. https://doi.org/10.5658/WOOD.2014.42.1.58
- Kodama, Y., Akishika, T. 1993. Non-destructive inspection of defects in woods by use of the pulse-echo technique of ultrasonic waves, 1: Measurements of enclosed knots. Journal of the Japan Wood Research Society (Japan).
- Kodama, Y., Akishika, T., Nakao, T., Takahashi, A. 1994. Non-destructive inspection of knots in wood by use of the frequency shift of propagated acoustic waves. Journal of the Japan Wood Research Society (Japan).
- Korea forest service, 2016. Survey on actual use of timber.
- Mishiro, A. 1995. Ultrasonic velocity in wood and its moisture content, 1: Effects of moisture gradients on ultrasonic velocity in wood. Journal of the Japan Wood Research Society (Japan).
- Lee, J.J., Kim, G.M., Bae, M.S. 2003. Investigation of transmission process for ultrasonic wave in wood. Journal of the Korean Wood Science and Technology 31(2): 31-37.
- Park, J.C., Hong, S.I. 2008. Determination of localized defects in wood by the transfer time of ultrasonic waves. Journal of the Korean Wood Science and Technology 36(1): 61-68.
- Sakai, H., Minamisawa, A., Takagi, K. 1990. Effect of moisture content on ultrasonic velocity and attenuation in woods. Ultrasonics 28(6): 382-385. https://doi.org/10.1016/0041-624X(90)90060-2
- Sandoz, J.L. 1993. Moisture content and temperature effect on ultrasound timber grading. Wood Science and Technology 27(5): 373-380. https://doi.org/10.1007/BF00192223