Review of Noncontact Ultrasonic Measurement System for Structural Health Monitoring_Crimson Publishers

Review of Noncontact Ultrasonic Measurement System for Structural Health Monitoring by Makiko Kobayashi in Advancements in Civil Engineering & Technology


Abstract

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.

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