Numerical Analysis of Ultrasonic Beam of Variable-Line-Focus-Beam Film Transducer
Numerical Analysis of Ultrasonic Beam of Variable-Line-Focus-Beam Film Transducer
复制标题
变线焦束薄膜换能器超声波束的数值分析
DOI：
10.1143/jjap.46.4486
复制
发表时间：
2007
影响因子：
1.5
通讯作者：
S. Ueha
中科院分区：
文献类型：
--
作者：
T. Aoyagi;M. Nakazawa;Kentaro Nakamura;S. Ueha
本研究利用时域有限差分（FDTD）方法和液体弹性波反射理论对变线焦波束换能器辐射的超声波束特性进行了数值计算。在透镜宽度与接收强度曲线中观察到由泄漏表面声波 (SAW) 引起的干扰纹波。得到了合理的结果，即文献中的真圆弧透镜。与传统的 V(z) 曲线一样，纹波根据衰减参数 α 和泄漏 SAW 速度而变化。与传统的真圆弧透镜不同，在焦点的两侧都可以观察到由泄漏 SAW 引起的波纹。
In this study, the characteristics of an ultrasonic beam radiated by a variable-line-focus-beam transducer were numerically calculated by finite-difference time domain (FDTD) method and liquid-elastic wave reflection theory. The interference ripple caused by a leaky surface acoustic wave (SAW) was observed in the lens width vs received intensity curve. Reasonable results, the true-circle-arc-lens in the literature, were obtained. As in the conventional V(z) curve, the ripple changed according to the attenuation parameter α and the leaky SAW velocity. Unlike for the conventional true-circle-arc-lens, the ripples caused by the leaky SAWs are observed at both sides of the focal point.
使用线聚焦束超声波材料表征系统评估玻璃材料
DOI：
--
发表时间：
2005
期刊：
IEEE Trans.Ultrason., Ferroelect., Freq.Contr. (in press)
影响因子：
--
作者：
J.Kushibiki;M.Arakawa;Y.Ohashi;R.Okabe
通讯作者：
R.Okabe
气相沉积聚合法制备主链具有低聚噻吩链段的聚脲薄膜的热释电性能
DOI：
--
发表时间：
2004
期刊：
Japanese Journal of Applied Physics 43
影响因子：
--
作者：
H.Muguruma;M.Ishikawa;J.Nakada;S.Hotta;Y.Takahashi
通讯作者：
Y.Takahashi