Department of Physics and Technology, UiT The Arctic University of Norway, 9037 Tromsø, Norway.
Sensors (Basel). 2018 Jun 12;18(6):1908. doi: 10.3390/s18061908.
High-frequency unfocused polymer array transducers are developed using an adhesive-free layer-by-layer assembly method. The current paper focuses on experimental and numerical methods for measuring the acoustic performance of these types of array transducers. Two different types of numerical approaches were used to simulate the transducer performance, including a finite element method (FEM) study of the transducer response done in COMSOL 5.2a Multiphysics, and modeling of the excited ultrasonic pressure fields using the open source software k-Wave 1.2.1. The experimental characterization also involves two methods (narrow and broadband pulses), which are measurements of the acoustic reflections picked up by the transducer elements. Later on, measurements were undertaken of the ultrasonic pressure fields in a water-scanning tank using a hydrophone system. Ultrasonic pressure field measurements were visualized at various distances from the transducer surface and compared with the numerical findings.
高频非聚焦聚合物阵列换能器采用无胶层层组装方法开发。本文侧重于测量此类阵列换能器声性能的实验和数值方法。使用两种不同类型的数值方法来模拟换能器性能，包括在 COMSOL 5.2a Multiphysics 中进行的换能器响应的有限元法（FEM）研究，以及使用开源软件 k-Wave 1.2.1 对激励超声压力场进行建模。实验特性还涉及两种方法（窄带和宽带脉冲），即测量换能器元件接收到的声反射。之后，使用水扫描槽中的水听器系统在水中进行了超声压力场的测量。在距换能器表面的不同距离处对超声压力场进行了可视化，并与数值结果进行了比较。
