NDLI: Plate-type waveguides for detecting acoustic emissions generated by termite attacks

Content Provider	Springer Nature Link
Author	Yanase, Yoshiyuki Fujii, Yoshihisa Okumura, Shogo Imamura, Yuji Yoshimura, Tsuyoshi
Copyright Year	2000
Abstract	To examine the feasibility of using plate-type waveguides for effective detection of acoustic emissions (AEs) from termite attacks in wood, AEs generated by breaking pencil leads or by termite attacks were detected using an AE sensor with a resonant frequency of 140kHz with steel plates of four different sizes and thickness and three AE sensors without them. The larger plates were associated with larger amplitudes of the artificial AEs. The amplitudes of AEs detected by an AE sensor with a steel plate larger than 30×30mm were greater than the average amplitude of the artificial AEs detected by three AE sensors. When detecting AEs generated by the feeding activity of workers,Coptotermes formosanus Shiraki, the cumulative AE events detected by the sensor with a steel plate were much larger than those of the three AE sensors without a plate. Because AE waves are attenuated much less in a steel plate than in wood, it is more effective to attach the AE sensor to wood with a steel plate rather than directly to the wood. These findings suggest that it is feasible to use an AE sensor with a plate-type waveguide for the nondestructive detection of termite attacks in wood.
Starting Page	243
Ending Page	247
Page Count	5
File Format	PDF
ISSN	14350211
Journal	Journal of Wood Science
Volume Number	46
Issue Number	3
e-ISSN	16114663
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-01-01
Publisher Place	Tokyo
Access Restriction	Subscribed
Subject Keyword	Acoustic emission (AE) monitoring Termite attack Plate-type waveguide Coptotermes formosanus Shiraki Wood Science & Technology Materials Science Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Biomaterials Forestry

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