[1A04-07] Instrumentation and Control

[1A04] Fundamental study on the three-dimensional object shape imaging method using air-coupled ultrasonic sensing

*Hironobu Kiuchi¹, Shun Kimura¹, Hideharu Takahashi¹, Hiroshige Kikura¹, Daisuke Sasa², Shuichi Omori² (1. Tokyo Tech, 2. TEPCO)

Keywords:Air-coupled ultrasound, Ultaronic Imaging, Shape measurement, Radiation resistance

The three-dimensional object shape imaging method using air-coupled ultrasonic sensing is proposed to obtain clear status of fuel debris in Fukushima Daiichi nuclear power plant. Two fundamental experiments: radiation resistance test of air-coupled ultrasonic sensor and the object shape imaging with the sensor, showed high-radiation resistance of the sensor and utility of the imaging method.