Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Flávio Buiochi"'
Publikováno v:
Eng, Vol 4, Iss 4, Pp 2582-2600 (2023)
The measurement of acoustic fields generated by ultrasonic transducers is important for determining the focal length, lateral resolution, and amplitudes of the lateral and grating lobes. The acoustic field is commonly characterized by a set of scans
Externí odkaz:
https://doaj.org/article/d9d71e0d65754c6a8191cc634a94fe32
Publikováno v:
Sensors, Vol 24, Iss 13, p 4061 (2024)
This study introduces an innovative approach to the layered model, emphasizing the physical–chemical characterization of miscible liquid systems through ultrasonic techniques, with a specific focus on the water–ethanol system used in pharmaceutic
Externí odkaz:
https://doaj.org/article/0c148b7af0ca49068f671cb4c86302ce
Publikováno v:
Sensors, Vol 22, Iss 19, p 7236 (2022)
This work proposes the slope of the phase spectrum as a signal processing parameter for the ultrasonic monitoring of the water content of water-in-crude oil emulsions. Experimental measurements, with water volume fractions from 0 to 0.48 and test tem
Externí odkaz:
https://doaj.org/article/7606dad1d28d4d40a68e4c36321842bf
Autor:
Carlos A. B. Reyna, Ediguer E. Franco, Alberto L. Durán, Luiz O. V. Pereira, Marcos S. G. Tsuzuki, Flávio Buiochi
Publikováno v:
Machines, Vol 9, Iss 12, p 335 (2021)
This work deals with a transmission-reception ultrasonic technique for the real-time estimation of the water content in water-in-crude oil emulsions. The working principle is the measurement of the propagation velocity, using two in-house manufacture
Externí odkaz:
https://doaj.org/article/ad68619da8b54d2da64ec87adbd91a11
Autor:
Alberto L. Durán, Ediguer E. Franco, Carlos A. B. Reyna, Nicolás Pérez, Marcos S. G. Tsuzuki, Flávio Buiochi
Publikováno v:
Sensors, Vol 21, Iss 15, p 5088 (2021)
This work shows the application of an ultrasonic multiple-scattering sensor for monitoring water-in-petroleum emulsions. The sensor consists of a commercial ultrasonic transducer with an array of cylindrical scatterers placed in the near field. The s
Externí odkaz:
https://doaj.org/article/072e309f5ed342eab0948188845b5520
Autor:
Estevão Patricio Rodrigues, Timoteo Francisco de Oliveira, Marcelo Yassunori Matuda, Flávio Buiochi
Publikováno v:
Sensors, Vol 21, Iss 10, p 3501 (2021)
Most works that address 2-D array ultrasonic transducers for underwater applications are about the geometry aspects of the array and beamforming techniques to make 3-D images. They look for techniques to reduce the number of elements from wide apertu
Externí odkaz:
https://doaj.org/article/9321029a48be4be6bdb20802108a8e25
Publikováno v:
Dyna, Vol 78, Iss 168, Pp 58-64 (2011)
El comportamiento mecánico de los materiales elásticos es modelado por medio de dos constantes independientes: el módulo de elasticidad y el coeficiente de Poisson. La medición precisa de estas constantes es indispensable en algunas aplicaciones,
Externí odkaz:
https://doaj.org/article/addc668c181c40a3b5a54bdbabd46045
Autor:
Agesinaldo M. Silva, Marcos de Sales Guerra Tsuzuki, Flávio Buiochi, Alberto Lemos Duran, Júlio Cezar Adamowski, André Kubagawa Sato, Thiago de Castro Martins, Ediguer E. Franco
Publikováno v:
IFAC-PapersOnLine. 53:10480-10484
This work presents a GPU algorithm to calculate the acoustic field generated by a circular ultrasonic transducer radiating in water a continuous wave. The acoustic pressure in a space point in front of the transducer is calculated by Rayleigh integra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55586cb8361c2f8c5b5652bd6384c5d4
https://doi.org/10.1016/j.ifacol.2020.12.2792
https://doi.org/10.1016/j.ifacol.2020.12.2792
Autor:
Ediguer E. Franco, Carlos Arturo Burbano Reyna, Marcos de Sales Guerra Tsuzuki, Alberto Lemos Duran, Flávio Buiochi, Nicolás Pérez
Publikováno v:
Sensors, Vol 21, Iss 5088, p 5088 (2021)
Sensors (Basel, Switzerland)
RED: Repositorio Educativo Digital UAO
Universidad Autónoma de Occidente
instacron:Universidad Autónoma de Occidente
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Sensors (Basel, Switzerland)
RED: Repositorio Educativo Digital UAO
Universidad Autónoma de Occidente
instacron:Universidad Autónoma de Occidente
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
This work shows the application of an ultrasonic multiple-scattering sensor for monitoring water-in-petroleum emulsions. The sensor consists of a commercial ultrasonic transducer with an array of cylindrical scatterers placed in the near field. The s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19b0254517a78ddb1d94fce63ef9e168
https://www.mdpi.com/1424-8220/21/15/5088
https://www.mdpi.com/1424-8220/21/15/5088
Autor:
Marcelo Yassunori Matuda, Chi Nan Pai, Timoteo Francisco de Oliveira, Flávio Buiochi, Júlio Cezar Adamowski
Publikováno v:
Research on Biomedical Engineering. 35:27-37
This paper presents an ultrasonic flexible linear array transducer prototype developed to be coupled directly over human body curvatures. The transducer was made of a 2.25 MHz piezoelectric ceramic array and a curvature sensor, both encapsulated by a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d9bc9c4044209a4443846fe3eee54e2
https://doi.org/10.1007/s42600-019-00006-1
https://doi.org/10.1007/s42600-019-00006-1