摘要
The controls of the pass-bands in an asymmetric acoustic transmission system are investigated numerically and ex- perimentally, and the system consists of a periodical rectangular grating and two uniform brass plates in water. We reveal that the pass-band of the asymmetric acoustic transmission is closely related to the grating period, but is affected slightly by the brass plate thickness. Moreover, the transmittance can be improved by adjusting the grating period and other structural parameters simultaneously. The control method of the system has the advantages of wider frequency range and simple operation, which has great potential applications in ultrasonic devices.
The controls of the pass-bands in an asymmetric acoustic transmission system are investigated numerically and ex- perimentally, and the system consists of a periodical rectangular grating and two uniform brass plates in water. We reveal that the pass-band of the asymmetric acoustic transmission is closely related to the grating period, but is affected slightly by the brass plate thickness. Moreover, the transmittance can be improved by adjusting the grating period and other structural parameters simultaneously. The control method of the system has the advantages of wider frequency range and simple operation, which has great potential applications in ultrasonic devices.
基金
Project supported by the National Basic Research Program of China(Grant No.2012CB921504)
the Major Program of the National Natural Science Foundation of China(Grant No.51239005)
the National Natural Science Foundation of China(Grant Nos.11174142 and 11404147)
the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20140519)
the China Postdoctoral Science Foundation(Grant No.2015M571672)
the Training Project of Young Backbone Teachers of Jiangsu University,China
the Research Fund for Advanced Talents of Jiangsu University,China(Grant No.13JDG106)
