The fast processing 2D analytical model has been developed in order to predict the directivity patterns of contact type ultrasonic transducers by knowing the behavior of the transducer and the dispersive characteristics of the propagating medium.

Apr 1, 2021 · In this work, we propose a straightforward approach to assess the experimental directivity function of linear UAs. Hardware requirement is minimal, consisting essentially of a thin steel wire to emulate a two-dimensional point-like reflector, and a water tank for immersion.

Direc-tivity pattern consists of a main lobe and side lobes. Radiation intensity is dominant mainly in the front region of the transducer source, so the main lobe is di-rectly in front of the ultrasound transmitter, followed by side lobes sidewise with null region in between these lobes.

In this paper, the PZT transducer is used to build a directivity test platform for experimental exploration. The experimental results show that 8 8 array is an optimal choice for plane parallel arrangement, and the 3D concave array is proved to be applicable in directional sound system.

May 8, 2020 · This study presents a practical experimental setting that generates directivity and attenuation patterns for ultrasonic sensors as an individual or a configured array.

Mar 26, 2018 · In this paper, a novel 2D analytical model based on the Huygens’s principle of wave propagation is proposed in order to predict the directivity patterns of contact type ultrasonic transducers in the generation of guided waves (GWs).

For the measurements taken on a half-circle, a full directivity pattern can be obtained using the symmetry and antisymmetry of the SH 0 and Lamb wave modes. For each individual characteristic, the symmetry lines were located at 0–180° and 90–270°.

The directivity of a sensor unit used as an ultrasound switch is 8° to 30° (sound pressure half-angle). The directivity is also strongly affected by the shape of the

The graphical data describing the ultrasonic sensor directivity characteristics for a sample ultrasonic sensor is given in logarithmic scale in Figure 6. In the first array experiment, a...

The acoustic radiation pattern, or beam pattern, is the relative sensitivity of a transducer as a function of spatial angle. This pattern is determined by factors such as the frequency of operation and the size, shape and acoustic phase characteristics of the vibrating surface. The beam patterns of transducers are reciprocal, which