Improved methodology of measuring moisture content of wood by a vibrational technique |
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Authors: | Mitsuru Taniwaki Hidemi Akimoto Takanori Hanada Minami Tohro Naoki Sakurai |
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Affiliation: | a Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Japanb Applied Vibro-Acoustics Inc., Higashi-Hiroshima, Japan |
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Abstract: | A method of measuring moisture content of wood is introduced. This method uses a vibrational technique. A shaker driven by swept sine signals was used for the accurate generation of vibration. A cylindrical wood sample was used to verify the method of measuring the moisture content. Resonance frequencies of the wood sample decreased as its moisture content increased. An experiment was performed by measuring the vibration of a tree to explore the feasibility of applying the method to the measurement of the moisture content of trees. The circumferential mode, which is independent of the height of a tree, was identified using a white oak tree. |
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Keywords: | Acoustic measurement circumferential mode laser Doppler vibrometer non-destructive measurement |
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