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Two theoretical models of infrasound piezoelectric hydrophone (IPH) are proposed to meet the requirements of high sensitivity and low frequency hydrophone. The IPH has a laminated structure by using piezoelectric plates with polarization along thickness. Two connection forms of piezoelectric plates, in series and in parallel, are taken into consideration. The effect of structural parameters on the...
This work investigated that the mechanical and electrical behavior of PZT disk stacks embedded in asphalt pavement using a finite element analysis program. The stacks were composed with PZT disks with different thickness and diameter and connected in parallel. At first, the displacement difference of pavement surface with and without transducer was studied. The nylon was selected to fabricate cylindrical...
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