Zobrazeno 1 - 10
of 19
pro vyhledávání: '"E. Chamberod"'
Publikováno v:
Measurement Science and Technology. 13:631-637
a0 mode Lamb waves are generated in a non-piezoelectric plate by mode conversion using P(VDF-TrFE) transducers upon which single-phase comb electrodes are etched. The determination of the propagation equations of the waves according to the device par
Publikováno v:
Ultrasonics. 36:257-262
At great depths, the rocks of the sea bottom are exposed to very high pressures that can modify their elastic parameters. The classic laboratory techniques on bore hole rock samples are carried out at ambient pressure, so we have developed an innovat
Publikováno v:
Ultrasonics. 36:15-20
Early works in elastic waves devices for sensors applications at liquid interfaces mainly utilize plate mode resonators, build with thin film technology. In general, these plates are fragile and difficult to handle during manufacture and use. Some of
Publikováno v:
International Journal of Electronics. 82:117-124
We present a low cost electronic system designed to determine the resonant frequency of a composite piezopolymer resonator under an applied stress. Two high frequency signals are digitally synthesized, one of which is fed to the resonator, then the p
Publikováno v:
Sensors and Actuators A: Physical. 57:173-177
We present a new method for measuring static force or pressure using a piezoelectric element. Our structure is based on a composite resonator using poly (vinylidene fluoride) (PVDF), brass electrodes and rubber. This resonator presents a resonance-fr
Publikováno v:
Ferroelectrics. 171:217-224
We present a new method for measuring static force or pressure using a piezoelectric element. Our structure is based on a composite resonator using PVDF, brass electrodes and rubber. This resonator presents a resonance frequency shift under applied s
Publikováno v:
Measurement Science and Technology. 5:604-606
An angular and acceleration measurement system using the piezoelectric polymer poly (vinylidene fluoride) is described, furthermore a compensation of the polymer's pyroelectric effects has been achieved. The advantages of this sensor are that there a
Publikováno v:
1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118).
We present the temperature-dependent characteristics of a Lamb wave device used as a liquid density sensor. Its fabrication process was simplified using a P(VF/sub 2/-VF/sub 3/) film stuck on a non-piezoelectric medium. The lowest order antisymmetric
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Akademický článek
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