Gómez-Lozano Vicente, Rubio Constanza, Candelas Pilar, Uris Antonio, Belmar Francisco
Centro de Tecnologías Físicas, Universitat Politécnica de Valencia, Avd. Los Naranjos, s/n., Valencia 46022, Spain.
Materials (Basel). 2016 Jun 7;9(6):453. doi: 10.3390/ma9060453.
Underwater ultrasonic transmissions for fluid-solid and air-solid phononic brass plates are reported in this work. Although the structure is roughly the same, experimental results show very different behaviour between fluid-solid and air-solid phononic plates, due to most of the properties of the fluid-solid perforated plates rely on Fabry-Perot resonances, Wood anomalies and Lamb modes. In air-solid phononic plates Fabry-Perot resonance is highly attenuated due to impedances difference between air and water, and therefore some transmission modes are now distinguishable due to surface modes coupling.
本文报道了用于流固和声固声子铜板的水下超声传输。尽管结构大致相同，但实验结果表明，流固和声固声子板之间的行为存在很大差异，这是因为流固穿孔板的大多数特性依赖于法布里-珀罗共振、伍德异常和兰姆模式。在声固声子板中，由于空气和水之间的阻抗差异，法布里-珀罗共振被高度衰减，因此，由于表面模式耦合，一些传输模式现在可以区分开来。
