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vibration amplitude of the piezoelectric transducer

Views: 32     Author: Site Editor     Publish Time: 2018-04-29      Origin: Site

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1

piezoceramic ring pressure transducer 


2

piezoelectric transducer quartz 


9CA28CE0BEA58A21F9384B515E434818

piezoelectric tubes knock sensor



When the 2 mm thickness piezoelectric ceramic is excited by the corresponding resonant frequency, the maximum vibration amplitude is reduced by 38.88% with respect to 1 mm, and the maximum vibration amplitude of the 3 mm piezoceramic ring pressure transducer under the excitation of the resonant frequency is reduced by 54.24% with respect to 1 mm. The 5 mm thickness piezo ceramics is reduced by 65.78% , which means that as the thickness of the piezo ceramics increases, the maximum amplitude of piezoelectric transducer quartz will initially attenuate at the corresponding resonant frequency, and then the rate of change will gradually decrease or reduce. When the thickness of piezoelectric ceramic is greater than 1 mm, with the increasing of the thickness of the piezoelectric ceramic, the resonant frequency value is corresponding to its maximum amplitude and the maximum amplitude under the excitation of the corresponding frequency will exhibit nonlinear attenuation. The vibration amplitude of the piezoelectric ring transducer affects its ability to radiate ultrasonic waves. When the thickness of the piezoelectric ceramic changes, it will influence the radiated acoustic energy. This article will analyze and study the acoustic field generated by the vibration of the piezoelectric ceramic.


The finite analysis of the sound field of piezoelectric tubes knock sensor with different thicknesses under the excitation of the corresponding frequency was carried out. The piezoelectric ceramic is embedded for smart module, and the simulated piezoelectric ceramic radiates ultrasonic waves when it is oscillating in the concrete to study the maximum sound pressure and the directionality of propagation.The PZT-5H material piezo ceramic cylinderwere studied to simulate the piezoelectric ceramics wrapped in a concrete environment with a radius of 50mm. The sound field distribution of piezoelectric ceramics at different thicknesses was studied. The parameters for the sound field study include compliance constants, damping coefficients, piezoelectric coefficients, density of concrete, and sound velocity of ultrasonic waves in concrete. Under the different environments, the ability of piezoelectric tubes for micro-actuator is to radiate ultrasonic waves is very different. This article compares the distribution of buried ultrasonic waves between piezoelectric ceramics and piezoelectric ceramics in a free state. Ultrasound piezo is radiated in the environment, at this time the maximum acoustic pressure of the ultrasonic wave is 2.93


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