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Detection Of Termite Activity Through Acoustic Surveying (2007)

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Thesis Archive

Detection Of Termite Activity Through Acoustic Surveying (2007)

David, Jeffrey Q., Suguitan, Randolph Charles G. II, Cacatian, Neri Gary S., Duque, Richmond G.

Abstract:

-In this paper, a method for detecting termite activity through acoustic surveying is presented. The method uses a transducer which has a resonant frequency of 40 kHz, fed in a conditioning circuit, and outputs the data acquired in a Liquefied Crystal Display (LCD). The data acquired are in counts and samples per second. Further analysis can be made in the software applications available, MATLAB and Visual Basic (VB) through serial interface. Results from the application of the hardware and software modules and concerning the accuracy of detection are presented. Acoustic Emission- the class of phenomena whereby transient elastic waves are generated by the rapid release of energy from a localized source or sources within a material, or the transient elastic wave(s) so generated. Acoustic Emission Count (Emission Count) (N) – the number of times the acoustic emission signal amplitude exceeds a preset threshold during any selected portion of a test. Acoustic Emission Signal Amplitude – the peak voltage of the largest excursion attained by the signal waveform from an emission event.

 

Correspondence:

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