[5p-C22-1~9] 1.6 Ultrasonics

[5p-C22-4] Development of air-coupled ultrasonic probe using piezoelectric element rods

〇Toshihiro Tsuji¹, Daitaro Kitahara¹, Yasuhiro Tanaka¹, Yoshikazu Ohara¹, Tsuyoshi Mihara¹ (1.Tohoku Univ.)

Keywords:air-coupled ultrasound, gas composite vibrator, dicing

Air-coupled ultrasound method needs the improvement of the transmission efficiency of a probe. We developed a probe using gas-composite vibrator based on diced piezoelectric rods array. However, dominant mechanism of transmission frequency is not revealed. In this study, we found a possibility of controlling frequency characteristics by changing kerf width.