Acoustic and flow data of fluidic and piezoelectric ultrasonic transducers

Abstract

This data article presents characteristic acoustic and flow data of a fluidic ultrasonic transducer as well as acoustic data of a commercial piezoelectric ultrasonic transducer used in non-destructive testing for civil engineering. The flow data has been acquired using hot-wire anemometry and a Pitot tube. The three-dimensional acoustic data of both devices has been acquired using a calibrated microphone. The distribution of characteristic acoustic properties of both transducers are extracted and given in addition to the raw data. The data presented in the article will be a valuable source for reference and validation, both for developing fluidic and alternate ultrasound generation technologies. Furthermore, they will give additional insight into the acoustic-flow interaction phenomena of high speed switching devices. This article is accompanying the paper Experimental Analysis of the Acoustic Field of an Ultrasonic Pulse Induced by a Fluidic Switch (Bühling et al., 2021) published in The Journal of the Acoustical Society of America, where the data is interpreted in detail and the rationale for characteristic sound properties of the fluidic transducer are given.

Fluidic Ultrasound Generation for Non‐Destructive Testing

“…Fluidic Transducer Operation: The fluidic transducer was operated in the mode described in a previous study [83] and shown in Figure 3a. A constant pressure of 1.8 bar was applied to the main inlet.…”

“…The accuracy of these averaged maximum pressure values was estimated to be about ±5%. [83] Materials: The materials used in this study are listed in Table 1 together with the dimensions of the specimens and the literature values for the respective sound velocities. The time window [𝜏 l , 𝜏 u ] in which the cross-correlation maximum occurs was limited to both reduce the computation time and exclude cross-correlation maxima caused by the airborne sound interacting with the back-surface vibrometer.…”

“…The accuracy of these averaged maximum pressure values was estimated to be about $$\pm 5\%$$. [ 83 ]…”

Development of an Accurate and Robust Air-Coupled Ultrasonic Time-of-Flight Measurement Technique

“… ( a ) Sound field of the Ultran NCG100-S63 transducer in the center plane, where is the maximum sound pressure. The pressure data originate from a previous study [ 56 ]. ( b ) The full width at half maximum (FWHM) along the x -axis.…”