Summary
An acoustic resonance technique has been evaluated as a means of detecting deterioration in wood poles. The basis of the technique is that degradation of the pole by rot or other agency will lead to an increase in the damping of longitudinal acoustic waves, which can subsequently be detected by an examination of the acoustic resonance characteristics of the pole. The technique was assessed in a series of field trials conducted on in-situ poles, which were subsequently removed and dissected. The results of the acoustic testing compared favourably with the gradings of the poles following dissection.
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References
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The author wishes to thank the Sydney County Council for the assistance, material and other, provided in support of the project.
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Dunlop, J.I. Testing of poles by acoustic resonance. Wood Sci. Technol. 17, 31–38 (1983). https://doi.org/10.1007/BF00351830
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DOI: https://doi.org/10.1007/BF00351830