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Acoustic Transducer Articles & Analysis
11 articles found
This only works when the full acoustic output reaches the water; a coated transducer cannot deliver it. ...
Abstract The acoustic output from pulsed ultrasonic transducers has traditionally been analyzed with a hydrophone. ...
Abstract The basic design criteria for SAW transducers is typically a flat frequency response. design criteria for bulk wave transducers in nondestructive evaluation and medical imaging is the compactness of the impulse response. ...
Abstract A robust needle hydrophone has been developed for HIFU transducer characterization and reported on earlier [1]. After a brief review of the hydrophone design and performance, we demonstrate its use to characterize a 1.5 MHz, 10 cm diameter, F-number 1.5 spherically focused source driven to exceed an intensity of 1400 W/cm at its focus. Quantitative characterization of this source at high ...
The Krinholtz, Leedom, and Matthaei transmission line model for acoustic transducers has been implemented on an IBM PC-XT computer using transfer, or "ABCD" matrices. ...
Abstract A new type of transducer array has been designed and built for Imaging surface defect in metals such as aluminum. The array is formed by edge-bonding a piece of piezoelectric material to a substrate of the same material as the sample to be tested. The individual elements in the array are formed by photolithography, and each element acts as an edge-bonded surface wave transducer. The ...
We have developed an Iterative computer program to optimize the parameters for the acoustic matching layer(s) and the electrical matching network of a transducer for a minimum length of the impulse response. By including the Interactions between electrical and acoustic matching in our model » we have been able to significantly improve the ...
Abstract Ceramic strip resonators with rectangular cross-section have been made with aspect ratios (width to height ratios) from 0.1 to 30 . The short and open circuit resonant frequencies have been plotted as a function of aspect ratio and show good agreement between experiment and a simple coupled mode theory. The effect of loading these resonators acoustically with solids and liquids has also ...
At present, they are mainly used in the production of underwater acoustic transducers and electroacoustic transducers. Vibration control system, marine exploration and underground communication and other fields. Giant magnetostrictive materials are also used to manufacture intelligent vibration aging devices, ultrasonic ...
W. A. C. Bennet dam and G. M. Shrum generating station (GMS) are located on the Peace River in northeastern British Columbia, Canada. ...
Typical practice for turbine flow measurement has been to install instruments in the penstock, such as current meters (CM), acoustic time-of-flight transducers (ATF) or pressure-time taps (PT). At some plants, particularly those with buried penstocks, these methods have significant disadvantages, resulting in high costs. ...