A simple pre-stress estimating method of langevin transducers
Bo, Fu
Ting, Li
Hemsel, Tobias
capacitors
impedance convertors
piezoelectric transducers
stress analysis
Langevin transducers
basic circuit theory
capacitor
impedance converter
piezoelectric equation
pre-stress estimating method
voltmeter
Capacitors
Educational institutions
Equations
Force measurement
Impedance measurement
Manufacturing
Mechatronics
Piezoelectric transducers
Voltage
Voltmeters
Langevin transducer
capacitor
piezoelectric element
pre-stress
A simple pre-stress estimate method of Langevin transducers is studied. The measurement setup consists of a capacitor, an impedance converter and a voltmeter. Based on the piezoelectric equation and the basic circuit theory, the mathematical expression between the pre-stress and the voltage across the capacitor is derived. The pre-stress level can then be calculated out of the measurement of the capacitor voltage. In order to evaluate the precision of this method, a force washer is used to measure the pre-stress of the Langevin transducer. The result shows the pre-stress level obtained from this method is 30-40\% higher than the pre-stress level measured by the force washer. This method is simple and can be used to estimate the pre-stress of various Langevin transducers. The precision of this method can be raised if d33 is identified under different pre-stress levels.
2008
info:eu-repo/semantics/conferenceObject
doc-type:conferenceObject
text
http://purl.org/coar/resource_type/c_5794
https://ris.uni-paderborn.de/record/9568
Bo F, Ting L, Hemsel T. A simple pre-stress estimating method of langevin transducers. In: <i>Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium On</i>. ; 2008:324-327. doi:<a href="https://doi.org/10.1109/SPAWDA.2008.4775801">10.1109/SPAWDA.2008.4775801</a>
eng
info:eu-repo/semantics/altIdentifier/doi/10.1109/SPAWDA.2008.4775801
info:eu-repo/semantics/closedAccess