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Ultrasonic techniques for the detection of discontinuities in aluminum foams
(American Institute of Physics, 2017-02)
Metal foams are interesting materials with many potential applications. They are characterized by a cellular structure, that is the metals or metal alloys foamed include gas voids in the material. Their particular lightweight ...
Material properties of the skull layers of the primate parietal bone: A single-subject study
(Public Library of Science, 2020-01-01)
The outer cortical table of the parietal bone has been commonly used as a calvarial bone graft site for the craniofacial reconstruction. However, little is known about how removing the outer table may affect the function ...
Material properties of the skull layers of the primate parietal bone: A single-subject study
(Public Library of Science, 2020-01-01)
The outer cortical table of the parietal bone has been commonly used as a calvarial bone graft site for the craniofacial reconstruction. However, little is known about how removing the outer table may affect the function ...
Electromechanical characterization of piezoelectric polymer thin films in a broad frequency range
(Elsevier, 2014-08)
Piezoelectric materials are usually characterized using resonant methods. However, piezoelectric polymers are used in broadband devices, thus requiring characterization over a wide range of frequencies. In this work, we ...
A method for the calibration of wideband ultrasonic sensors for optoacoustics
(American Institute of Physics, 2021-06-16)
A method for calibration of ultrasonic sensors for optoacoustics that provides both frequency response and sensitivity is presented. In order to obtain the bandwidth and the frequency response of an uncalibrated sensor, a ...
Application of ultrasound in comminutionULTRASONICSUltrasonics
(ELSEVIER SCIENCE BV, 2017)
Application of ultrasound in comminutionULTRASONICSUltrasonics
(ELSEVIER SCIENCE BV, 2017)
Generation of sub-microsecond quasi-unipolar pressure pulses
(Elsevier Science, 2019-05)
We present a method to generate sub-microsecond quasi-unipolar pressure pulses. Our approach is based on the laser irradiation of a thin copper wire submerged in water. The acoustic waveforms were recorded using two ...
Mejora en la calidad de imágenes ultrasónicas aplicando métodos de composición especial y empleando sistemas de Phased ArrayImprovement in the quality of ultrasonic images by applying spatial composition methods and using phased array systems
(Universidade Federal do Rio de Janeiro, 2018-07)
La técnica de ultrasonidos de Phased Array (PA) se ha convertido en una herramienta para la Evaluación No Destructiva (END) por imágenes muy utilizada en el sector industrial. La técnica PA permite realizar deflexiones y ...