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Testing of poles by acoustic resonance

โœ Scribed by J. I. Dunlop

Publisher
Springer
Year
1983
Tongue
English
Weight
383 KB
Volume
17
Category
Article
ISSN
0043-7719

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โœฆ Synopsis

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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โœ J. I. Dunlop ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› Springer ๐ŸŒ English โš– 571 KB

Wood poles have been traditionally tested by "sounding" -striking with a hammer and making a subjective assessment on the basis of the sound emitted. Various other acoustic methods have been developed and employed for this function but none has been accepted on any regular basis as being successful.