J042014 圧電式リング形センサーによる高次ねじりモードガイド波の励起と不要な周方向ガイド波の励起について([J04201]超音波計測・解析法の新展開(1))

抄録

Excitation of higher-order mode guided waves using a piezoelectric ring-shaped transducer were presented. The principle of the transduction and the experimental verifications of the T(0,1), T(1,1) and T(2,1) mode generations in frequency range from 30 kHz to 80 kHz were shown. It was also confirmed that the circumferential Lamb waves were excited resonantly by the piezoelectric ring-shaped transducer as spurious signals at appropriate frequencies.