A study of underwater transducers based on piezoelectric composites working at shear vibration modal

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (8) : 193-197.

JIA Junbo1,2,QIN Lei1,2,3,ZHONG Chao1,WANG Likun1,2,3

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Abstract

The shear vibration modes (d15 mode) of piezoelectric ceramics have many advantages, such as high electromechanical coupling coefficient, generally higher piezoelectric constant, low frequency constant, and dielectric constant.It thus has a good performance in piezoelectric energy collector and new structural composite transducers.The shear vibrations generated by the piezoelectric ceramics were converted into the thickness vibration of the composite with designing a transition layer with a special structure.At the same time, this transition layer meets the requirements to radiate underwater longitudinal wave, and thus improves the piezoelectric properties of composite materials.The impact of the transition layer material types on the overall performance of the composite material was studied through the finite element analysis and experiments.

Key words

piezoelectric composites / d15 shear-mode / turn the transfer / finite element analysis

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JIA Junbo1,2,QIN Lei1,2,3,ZHONG Chao1,WANG Likun1,2,3 . A study of underwater transducers based on piezoelectric composites working at shear vibration modal[J]. Journal of Vibration and Shock, 2019, 38(8): 193-197

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