1Graduate school of Science and Technology, Japan
2National Research Council of Canada, Canada
3Department of Intelligent Mechanical Engineering, Japan
*Corresponding author:Makiko Kobayashi, Graduate school of Science and Technology, Japan
Submission: September 04, 2019; Published: September 12, 2019
ISSN : 2639-0574Volume3 Issue4
Non-destructive testing (NDT) of infrastructure such as bridges and tunnels has become more important since it has aging problem and traffic was heavier than expected. Thin film ultrasonic sensors would be attractive because it is easy to integrate on huge structure. However, NDT of huge structure is still challenging because of sensor accessibility. Semi-noncontact ultrasonic sensors were proposed in this manuscript. 20cm diameter copper coil transmit/receive electrical signal from a pulser/receiver instrument and a thin film ultrasonic sensor and reflected echo from 12.7mm thick steel plate successfully. By this method, measurement using drone could be possible and it increases application possibility for huge infrastructure monitoring.
Keywords: NDT, Non-contact sensing; Ultrasound