Ance curve of two transducers in water. Figure eight. Conductance curve of two transducers in

Ance curve of two transducers in water. Figure eight. Conductance curve of two transducers in water.Actuators 2021, 10,9 ofFigure 8. Conductance curve of two transducers in water.Figure 9. Transmission voltage response curve of two transducers. Figure 9. Transmission voltage response curve of two transducers.Figure ten shows the directivity in the highfrequency transducers having a DS44960156 medchemexpress center hole at Figure ten shows the directivity in the highfrequency transducers having a center hole at 200 kHz. By means of comparative evaluation,the measured thickness from the vibration transvibration transducer 200 kHz. By means of comparative analysis, the measured thickness Actuators 2021, 10, x FOR PEER Assessment ten of 11 ducer a five mm mm disc hole within the centerincreases the principle lobe beam width by 0.7and and with having a five disc hole in the center increases the principle lobe beam width by 0.7 decreases the sidelobe level by 1.3 dB. decreases the sidelobe level by 1.three dB.Figure 200 kHz directivity diagram of disc disc transducer center hole. Figure 10. ten. 200 kHz directivity diagram oftransducer with awith a center hole.5. Conclusions As a result of highfrequency on the thickness vibration mode with the piezoelectric wafer, the vibration shape is quite complicated due to the coupling (-)-Chromanol 293B Purity & Documentation effect on the radial highorder mode, the thickness shear vibration modes, and also other modes. Within this paper, through theActuators 2021, 10,10 of5. Conclusions As a result of highfrequency of your thickness vibration mode on the piezoelectric wafer, the vibration shape is quite complex due to the coupling effect on the radial highorder mode, the thickness shear vibration modes, along with other modes. Within this paper, by means of the theoretical and simulation calculation on the vibration mode and coupling vibration frequency in the piezoelectric vibrator, the frequency optimization study, decoupling strategy and experimental verification have been carried out. The lowsidelobe highfrequency transducer was obtained by adjusting the central hole size in the perforated piezoelectric ceramic wafer. The simulation analysis and experimental final results show that the central hole features a basic but successful decoupling impact on the modal vibration of the circular highfrequency transducer, leading for the improvement of both the transmitting potential and directivity with the circular transducer. Using the enhance of your inner diameter on the hole within the center, the regular inverse vibration displacement in the disc surface disappears, the thickness vibration mode is progressively weakened by the coupling effect, and also the acoustic emission potential and sidelobe level of the transducer are enhanced. This easy strategy delivers technical assistance for the style of highfrequency transducers.Author Contributions: Conceptualization, H.Z. and H.L.; methodology, Y.W.; software program, J.B.; formal evaluation, Z.L.; investigation, H.Z.; sources, J.C.; writingoriginal draft preparation, H.Z.; writing evaluation and editing, J.C.; funding acquisition, H.Z. All authors have study and agreed to the published version from the manuscript. Funding: This research was funded by National All-natural Science Foundation of China, grant quantity 41906175, U1806221, U1809212, U1906218. Institutional Overview Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: Not applicable. Conflicts of Interest: The authors declare no conflict of interest.
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