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This paper proposes an H-type magnetoelectric (ME) composite transducer structure consisting of a magnetostrictive Fe-Ni fork substrate and piezoelectric PZT plates. The fork composite structure has a higher ME voltage coefficient and a higher ME power output relative to other ME composite structures due to its higher quality (Q) factor. The ME sensitivity of the fork structure reaches 11 V/Oe. The...
The magnetic sensor employing Terfenol-D/PZT/FeCuNbSiB (MPF) magnetoelectric (ME) laminate is investigated. The high permeability of FeCuNbSiB can concentrate the magnetic flux and enhance the effective dynamic strain coefficient in Terfenol-D, consequently resulting in the increase of the dynamic ME voltage coefficient (MEVC) (i.e., dVME/dHac under dc bias field) and the ME voltage sensitivity to...
Magnetostrictive properties in a type of iron-nickel-based ferromagnetic alloy with constant elasticity (FeNi-FACE) are investigated. The results indicate that the strain coefficient at resonance achieves 865.70 nm/A due to the high effective mechanical quality factor (~3000) of the alloy. A magnetoelectric (ME) transducer with high effective mechanical quality factor is developed, which employs the...
This paper presents a new high-efficiency ME composite transducer consisting of magnetostrictive Terfenol-D arrays, piezoelectric PZT arrays and a substrate. Magnetostrictive resonant unidirectional transducer (MRUDT) array groups and a piezoelectric unidirectional transducer (PUDT) array group are created inside the transducer while propagating the unidirectionality required for low loss and converting...
This paper presents a new magnetoelectric (ME) composite transducer consisting of a magnetostrictive Terfenol-D plate, multiple piezoelectric PZT plates and an ultrasonic horn. The energy of the vibrating wave induced from the magnetostrictive Terfenol-D plate can be converged by using an ultrasonic horn and the more vibrating energy can convert into electric energy through PZT plates at positions...
The sensory behaviors of the concrete modules embedded with piezoelectric devices (PZT element) are characterized. Such PZT-embedded concrete modules demonstrate sensitivity to the load applied on the modules. In this case, the load produces stress in the concrete module, which is detected by measuring the equivalent circuit parameters (equivalent parameters for short) of the PZT element embedded...
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