PVDF線集束型超音波センサを用いた漏えいレーリー波・漏えいクリーピング波・表面SV波速度の測定

概要

論文の詳細を見る
A method of measuring leaky Rayleigh wave velocity precisely has been developed with a line-focused PVDF ultrasonic transducer and a digital signal processing. A focused PVDF ultrasonic transducer is constructed by cementing PVDF film on a concave surface. The measurement system is composed of an ultrasonic pulser/receiver, a high-speed digital wave memory and a personal computer. The relative precision of the measurement for the leaky Rayleigh wave velocity of fused silica, the standard deviation divided by the mean velocity, is 10^<-4>. PVDF ultrasonic transducers have broad band width, therefore, leaky creeping wave and surface SV wave are clearly identified and these wave velocities have been measured simultaneously.
一般社団法人日本機械学会の論文
1997-11-25