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Listar por palabra clave "Transducers"

Mostrando ítems 1-6 de 6

Acoustic radiation efficiency of a periodically corrugated rigid piston

Estrada, Héctor; Uris Martínez, Antonio; Meseguer Rico, Francisco Javier (American Institute of Physics, 2012-09-03)

The radiation of sound by a periodically corrugated rigid piston is explored using theoretical and numerical approaches and compared with the radiation of flat rigid piston. The depth and the period of the corrugation are ...
Analysis of design methods of ultrasonic horns for high power applications

Martínez Izquierdo, Joan Jesús (Universitat Politècnica de València, 2013-10-14)

Sound waves are defined as a sequence of elastic compression and expansion of the molecules in a medium. The number of repeated sequences per unit time is called the frequency. These sound waves are detected by the human ...
Characterizing and modeling backscattering in silicon microring resonators

Ballesteros García, Guillem; Matres Abril, Joaquín; Martí Sendra, Javier; Oton Nieto, Claudio José (Optical Society of America, 2011)

We present an experimental technique to characterize back-scattering in silicon microring resonators, together with a simple analytical model that reproduces the experimental results. The model can extract all the key ...
Explicit finite-difference time-domain scheme for the simulation of 1-3 piezoelectric effect in axisymmetrical configurations

Ferri García, Marcelino; Camarena Femenia, Francisco; Redondo, Javier; Picó Vila, Rubén; Avis, Mark R. (Elsevier, 2012-09)

[EN] Numerical simulations are useful in the processes of design, development and optimization of transducers for non-destructive testing. In this work, a three-dimensional velocity-stress finite-difference model is presented ...
Video Sensor Architecture for Surveillance Applications

Sánchez Peñarroja, Jordi; Benet Gilabert, Ginés; Simó Ten, José Enrique (MDPI, 2012)

This paper introduces a flexible hardware and software architecture for a smart video sensor. This sensor has been applied in a video surveillance application where some of these video sensors are deployed, constituting ...
Wavelet-based 2D fusing of ultrasonic pulse-echo traces measured from two arrays radiating orthogonal beams

Rodríguez-Hernández, Miguel A.; Ramos, Antonio; San Emeterio Prieto, José Luis (IOP Publishing: Hybrid Open Access, 2011-10)

Ultrasonic measurements using orthogonal collimated beams provide both complementary and redundant information about internal parts of pieces or structures being tested, which must be fused. In this paper, a new wavelet-based ...