3-D Modelings of Radiated Ultrasonic Wave Field from Linear and Matrix Phased Array Transducers and Comparison of Their Performances

Abstract

〕 n has hcen proposed in order tD calculate off − axis wave 恥 lds from an ultrasonic transducer as well as on − ax 互 s wave fields ． Using this MGB model ， we can model three dimens玉 onal ( 3 − D )elastic wave fields radiated fr 〔 ) m an array transducer to a g ． olid with an efHcient computational time． 亙 n this paper ， brief formulations of th巳 MGB model are described 丘rst and then the accuracy of the MGB model i5 Ghecked ill comparisoll with results of the Rayleigh − Sommerfeld numerical integral mode1 ， As applications of the MGB mode1 ， we investigate performances of both linear and 皿 a むrix phased array transducers using the MGB inodel ． Also the 3 − D wave fields froln the matrix phased array transducer irl solid are visualized