Determination of the acoustic pressure at and the reflection coefficient of a target through measurements of the absorbed power and the emitter voltage

A harmonic acoustic wave, fed back by a reflecting target, modifies the electric impedance of the emitter. This effect is studied using a tightly focused beam and various flat targets with known reflection coefficients, which are placed at pressure maxima or minima of the standing wave in the focal...

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Veröffentlicht in:	IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2004-01, Vol.51 (1), p.109-113
Hauptverfasser:	Mestas, J.-L.A., Lenz, P., Cathignol, D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustic absorption Acoustic beams Acoustic emission Acoustic impedance Acoustic measurements Acoustic reflection Acoustic waves Acoustical measurements and instrumentation Acoustics Acoustics - instrumentation Algorithms Electric Impedance Electric potential Electric power generation Emittance Energy Transfer Equipment Design Equipment Failure Analysis Exact sciences and technology Fundamental areas of phenomenology (including applications) Image Interpretation, Computer-Assisted - instrumentation Image Interpretation, Computer-Assisted - methods Impedance Models, Biological Optical reflection Phantoms, Imaging Physics Power measurement Pressure measurement Reflection coefficient Reproducibility of Results Scattering, Radiation Sensitivity and Specificity Transducers Transducers, Pressure Ultrasonography - instrumentation Ultrasonography - methods Voltage
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