Measurement of Surface SH-Wave Velocities Generated on the Surface of Japanese Cypress Column

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DOI: 10.4236/oja.2014.44018    3,101 Downloads   3,563 Views  

ABSTRACT

Polyetherimide resin wedge transducers were used to generate a shear wave that was obliquely incident relative to the surface of a Japanese cypress column for measuring the surface SH-wave velocity. As the inter-transducer distance increased, the propagation time increased and the am-plitude became smaller. The propagation time and the amplitude were significantly correlated with the inter-transducer distance. The SH-wave velocity ranged from 1270 m/s to 1496 m/s. Surface SH-wave velocity was lower in the central part of the column and higher in the outer part. Velocity was negatively correlated with moisture content at 1% of significance level. These results suggest the accomplishment of the first target for applying the surface SH-wave acoustoelastic technique to nondestructive evaluation of drying stress in wood.

Cite this paper

Hasegawa, M. and Matsumura, J. (2014) Measurement of Surface SH-Wave Velocities Generated on the Surface of Japanese Cypress Column. Open Journal of Acoustics, 4, 177-183. doi: 10.4236/oja.2014.44018.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Simpson, W.T. (1983) Drying Wood: A Review—Part I. Drying Technology, 2, 235-264.
http://dx.doi.org/10.1080/07373938308959827
[2] Lee, N.H., Li, C., Zhao, X.F. and Park, M.J. (2010) Effect of Pretreatment with High Temperature and Low Humidity on Drying Time and Prevention of Checking during Radio-Frequency/Vacuum Drying of Japanese cedar Pillar. Journal of Wood Science, 56, 19-24.
http://dx.doi.org/10.1007/s10086-009-1050-4
[3] Matsumoto, A., Oda, H., Arima, T. and Fujimoto, N. (2012) Effect of Hot-Pressing as a Pre-Treatment for Prevention of Surface Checks in Sugi Columns with Pith. Mokuzai Gakkaishi, 58, 34-43.
http://dx.doi.org/10.2488/jwrs.58.34
[4] Kodama, Y. and Kawasaki, Y. (1994) An Estimating Method of Drying Stress for Column Lumber. Mokuzai Kougyo, 49, 120-123.
[5] Watanabe, K., Kobayashi, I., Matsushita, Y., Saito, S., Kuroda, N. and Noshiro, S. (2014) Application of Near-Infrared Spectroscopy for Evaluation of Drying Stress on Lumber Surface. Drying Technology, 32, 590-596.
http://dx.doi.org/10.1080/07373937.2013.846911
[6] Watanabe, K., Kobayashi, I., Saito, S., Kuroda, N. and Noshiro, S. (2013) Nondestructive Evaluation of Drying Stress Level on Wood Surface Using Near-Infrared Spectroscopy. Wood Science and Technology, 47, 299-315.
http://dx.doi.org/10.1007/s00226-012-0492-9
[7] Benson, R.W. and Raelson, V.J. (1959) Acoustoelasticity. Production Engineering, 30, 56-59.
[8] Crecraft, D.I. (1967) The Measurement of Applied and Residual Stresses in Metals Using Ultrasonic Waves. Journal of Sound and Vibration, 5, 173-192.
http://dx.doi.org/10.1016/0022-460X(67)90186-1
[9] Fukuoka, H., Toda, H. and Naka, H. (1983) Nondestructive Residual-Stress Measurement in a Wide-Flanged Rolled Beam by Acoustoelasticity. Experimental Mechanics, 23, 120-128.
http://dx.doi.org/10.1007/BF02328690
[10] Chaki, S. and Bourse, G. (2009) Stress Level Measurement in Prestressed Steel Strands Using Acoustoelastic Effect. Experimental Mechanics, 49, 673-681.
http://dx.doi.org/10.1007/s11340-008-9174-9
[11] Lillamand, I., Chaix, J.F., Ploix, M.A. and Garnier, V. (2010) Acoustoelastic Effect in Concrete Material under Uni-Axial Compressive Loading. NDT & E International, 43, 655-660.
http://dx.doi.org/10.1016/j.ndteint.2010.07.001
[12] Hasegawa, M., Yano, Y., Matsumura, J. and Oda, K. (2012) Prospects for Within-Tree Variation of the Acoustoelastic Behaviors in Japanese Cedar. NDT & E International, 49, 57-63.
http://dx.doi.org/10.1016/j.ndteint.2012.03.010
[13] Hasegawa, M., Matsumura, J., Kusano, R., Tsushima, S., Sasaki, Y. and Oda, K. (2010) Acoustoelastic Effect in Melia azedarach for Nondestructive Stress Measurement. Construction and Building Materials, 24, 1713-1717.
http://dx.doi.org/10.1016/j.conbuildmat.2010.02.018
[14] Tohmyoh, H., Ochi, Y. and Matsumura, T. (2001) Study on Detection and Quantitative Evaluation of Fatigue Cracks Using Surface SH Waves. Transactions of the Japan Society of Mechanical Engineers Series A, 67, 1508-1513.
[15] Yamagishi, H. and Fukuhara, M. (2007) Determination of Cyclic-Tension Fatigue of Al-4Cu-1Mg Alloy Using Ultrasonic Shear Waves. Materials Transactions, 48, 550-555.
http://dx.doi.org/10.2320/matertrans.48.550
[16] Sandoz, J.L. (1989) Grading of Construction Timber by Ultrasound. Wood Science and Technology, 23, 95-108.
http://dx.doi.org/10.1007/BF00350611
[17] Bucur, V. (2006) Acoustics of Wood. Springer-Verlag, Berlin.
[18] Hasegawa, M., Takata, M., Matsumura, J. and Oda, K. (2011) Effect of Wood Properties on Within-Tree Variation in Ultrasonic Wave Velocity in Softwood. Ultrasonics, 51, 296-302.
http://dx.doi.org/10.1016/j.ultras.2010.10.001
[19] Mishiro, A. (1996) Ultrasonic Velocity and Moisture Content in Wood II. Ultrasonic Velocity and Average Moisture Content in Wood During Desorption (1). Mokuzai Gakkaishi, 42, 612-617.
[20] Bucur, V. and Rocaboy, F. (1988) Surface Wave Propagation in Wood: Prospective Method for the Determination of Wood Off-Diagonal Terms of Stiffness Matrix. Ultrasonics, 26, 344-347.
http://dx.doi.org/10.1016/0041-624X(88)90033-9
[21] Sakai, H., Minamisawa, A. and Takagi, K. (1990) Effect of Moisture Content on Ultrasonic Velocity and Attenuation in Woods. Ultrasonics, 28, 382-385.
http://dx.doi.org/10.1016/0041-624X(90)90060-2
[22] Sandoz, J.L. (1993) Moisture Content and Temperature Effect on Ultrasound Timber Grading. Wood Science and Technology, 27, 373-380.
http://dx.doi.org/10.1007/BF00192223

  
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