Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Julio Quirce"'
Publikováno v:
Applied Sciences, Vol 10, Iss 24, p 8771 (2020)
Ferroelectrets are thin and porous polymeric films with a cellular microstructure, high porosity, permanent polarization and piezoelectric response. They have been used for different applications, where one of the most interesting ones is for the fab
Externí odkaz:
https://doaj.org/article/a6e9510ff6b042c9867f1f0d10ef0815
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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Transmission coefficient spectra of two ferroelectret films (showing several thickness resonances) measured with aircoupled ultrasound (0.2–3.5MHz) are presented and an explanation for the observed behavior is provided by proposing a film layered s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60f6439aec306dcd722bf1429276b61d
https://doi.org/10.1109/tuffc.2020.3025358
https://doi.org/10.1109/tuffc.2020.3025358
Publikováno v:
2021 IEEE International Ultrasonics Symposium (IUS).
Air-coupled ultrasonic transducers working at frequencies over 100 kHz have been widely used in the past for NDT applications and are a very attractive alternative when test specimens cannot enter in contact with water. In these cases, and in order t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91b2eb57fb5f0aa87f0b7d47a7b79af8
https://doi.org/10.1109/ius52206.2021.9593482
https://doi.org/10.1109/ius52206.2021.9593482
Publikováno v:
2021 IEEE International Ultrasonics Symposium (IUS).
Ferroelectret films are soft cellular solids capable to trap dielectric dipoles within the pores. These dipoles together with the large material compressibility give rise to a measurable piezoelectric response. They have been used to produce air-coup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3954bf0eb053049ae4defb48c4ec3d3
https://doi.org/10.1109/ius52206.2021.9593895
https://doi.org/10.1109/ius52206.2021.9593895
Publikováno v:
Polymers
Volume 13
Issue 19
Polymers, Vol 13, Iss 3239, p 3239 (2021)
Volume 13
Issue 19
Polymers, Vol 13, Iss 3239, p 3239 (2021)
Ferroelectret films are cellular polymers with electrically charged pores that exhibit piezoelectric response. Among other applications, ferroelectret films have been widely used as active elements in air-coupled ultrasonic transducers. More recently
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc8e964a9ef0293e02576175b91de10a
https://pubmed.ncbi.nlm.nih.gov/34641055
https://pubmed.ncbi.nlm.nih.gov/34641055
Publikováno v:
2019 IEEE International Ultrasonics Symposium (IUS).
The adaptation and optimization of polypropylene ferroelectret (FE) films as the main piezoelectric element for water immersion ultrasonic transducers is studied. One of its main features is that they present a very wide band response so they can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8315681873a5667e4d66aa6f1180003f
https://doi.org/10.1109/ultsym.2019.8926178
https://doi.org/10.1109/ultsym.2019.8926178
Publikováno v:
Proceedings of Meetings on Acoustics.
Investigation of the new type ferroelectret transducer excitation is presented. The conventional ultrasonic transducers made from piezoelectric ceramics, but the power efficiency change to mechanical efficiency is limited, furthermore the acoustic im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5c99384307d48a06520441ef2b67aa1
https://doi.org/10.1121/2.0001176
https://doi.org/10.1121/2.0001176
Publikováno v:
Proceedings of Meetings on Acoustics.
The ultrasonic inspection of low diameter pipes remains challenging, particularly in the power industry where new heater exchanger designs include tight curvatures and severe access restrictions. Moreover, advances in welding techniques require perfo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f737e265ba201b8a65cd932688bbd8eb
https://doi.org/10.1121/2.0001179
https://doi.org/10.1121/2.0001179
Publikováno v:
IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control; Apr2021, Vol. 68, p1245-1252, 8p
Autor:
Aguilar, Julio Quirce1 (AUTHOR) j.quirce@csic.es, Gómez Álvarez-Arenas, Tomás1 (AUTHOR) t.gomez@csic.es
Publikováno v:
Polymers (20734360). Oct2021, Vol. 13 Issue 19, p3239. 1p.