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Ultrasonic characterization of emulsions: milk and water in oil
(1999-12-01)
Measurements of ultrasonic attenuation and velocity in milk and low concentration water-in-oil (W/O) emulsion were conducted, using a measurement cell with a double-element transducer that eliminates diffraction losses. ...
Ultrasonic characterization of emulsions: milk and water in oil
(1999-12-01)
Measurements of ultrasonic attenuation and velocity in milk and low concentration water-in-oil (W/O) emulsion were conducted, using a measurement cell with a double-element transducer that eliminates diffraction losses. ...
Ultrasonic material characterization using diffraction-free PVDF receivers
(2010-01-01)
This work describes the use of a large aperture PVDF receiver in the measurement of density of liquids and elastic constants of composite materials. The density measurement of several liquids is obtained with the accuracy ...
Ultrasonic material characterization using diffraction-free PVDF receivers
(2010-01-01)
This work describes the use of a large aperture PVDF receiver in the measurement of density of liquids and elastic constants of composite materials. The density measurement of several liquids is obtained with the accuracy ...
Modeling of functionally graded piezoelectric ultrasonic transducers
(ELSEVIER SCIENCE BV, 2009)
The application of functionally graded material (FGM) concept to piezoelectric transducers allows the design of composite transducers without interfaces, due to the continuous change of property values. Thus, large ...
Analysis of 1-3 piezocomposite and homogeneous piezoelectric rings for power ultrasonic transducers
(Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM, 2009)
Some power ultrasonic transducers, such as Tonpilz transducers, require high-power transmitting capability as well as broadband performance. Optimized vibrational modes can achieve these requirements. This work compares ...
Sparse arrays and image compounding techniques for non-destructive testing using guided acoustic waves
(2013-06-01)
Piezoelectric array transducers applications are becoming usual in the ultrasonic non-destructive testing area. However, the number of elements can increase the system complexity, due to the necessity of multichannel ...
Sparse arrays and image compounding techniques for non-destructive testing using guided acoustic waves
(2013-06-01)
Piezoelectric array transducers applications are becoming usual in the ultrasonic non-destructive testing area. However, the number of elements can increase the system complexity, due to the necessity of multichannel ...