To effectively detect AEs generated by termite attack inside of house walls, it is necessary to use a waveguide attached to the AE sensor that penetrated walls to reach the inner posts or studs. In the laboratory testing, performance of a screw-type waveguide was discussed. AE sensor was attached to the head of screw-type waveguide put in the wood specimen. Higher amplitude of AEs generated by termite attack was detected for the sensor with screw-type wave guide. AE sensor could detect AEs on the surface of the wood specimen, on the other hand, AEs could be detected effectively inner the wood using screw-type waveguide. In this finding, it is possible to use the screws that have been already put in the construction members of the wooden house as waveguide.
Screw-type wave guide
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