Acoustoelastic stress measurement of wood in bending - A new attempt at determining stress conditions of wood

Y. Sasaki, M. Hasegawa, T. Iwata

研究成果: 専門家出版物への寄稿タイプ学術誌

7 被引用数 (Scopus)

抄録

The changes in ultrasonic wave velocity propagating in wood normal to the direction of applied stress were investigated experimentally. On the basis of the experimental results, bending stress distributions in wood specimens were estimated acoustoelastically by carrying out measurements of ultrasonic wave velocity. The investigation showed that ultrasonic waves changed speeds only a little, due to the applied stress. Acoustoelastic constants determined from the results of the experiment were used to express the percentage change in ultrasonic wave velocity as a function of the applied stress. The velocity change was seen to also depend on the mode of the ultrasonic wave. Bending stress distribution estimated acoustoelastically agreed well with stress measurements using the strain gauge method and results of numerical calculations. The results of the study show conclusively that the acoustoelastic phenomenon can be applied to determine stress conditions of wood, and it is expected that the method presented here will in the near future be developed into a useful, practical technique for stress measurement of wood.

本文言語英語
ページ237-243
ページ数7
59
No.4
専門出版物Holz als Roh - und Werkstoff
DOI
出版ステータス出版済み - 1月 1 2001
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 林業
  • 材料科学(全般)

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