Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Kai Hohlfeld"'
Publikováno v:
Sensors and Actuators A: Physical. 291:32-38
The present contribution reports on a novel approach for enhanced piezoelectric patch transducers based on round piezoceramic fibres. Starting from a critical review of the well-known Active Fibre Composite (AFC) concerning electrical coupling betwee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::876ff0bc770e67c94147934fe458d16a
https://doi.org/10.1016/j.sna.2019.03.030
https://doi.org/10.1016/j.sna.2019.03.030
Publikováno v:
tm - Technisches Messen. 86:297-306
Zusammenfassung Ultraschallwandler werden zum Senden und Empfangen akustischer Wellen eingesetzt und bilden damit das Herzstück eines jeden Ultraschallprüfgeräts. Je nach Anwendung arbeiten sie in unterschiedlichen Frequenzbereichen. Ultraschallwa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6a9d3dbd7af36f9941250b8436d4681
https://doi.org/10.1515/teme-2018-0068
https://doi.org/10.1515/teme-2018-0068
Autor:
Kai Hohlfeld, Sirko Geller, Andreas Schönecker, Alexander Michaelis, Sophia Eßlinger, Peter Neumeister, Sylvia Gebhardt, M. Gude
Integration of piezoceramic particles into polymers is considered to meet current and future challenges of function integration in lightweight engineering. Especially composites with integrated piezoceramic transducers for sensory tasks such as condi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43b65333fd22dab84e51c0c80f16a71e
https://publica.fraunhofer.de/handle/publica/250969
https://publica.fraunhofer.de/handle/publica/250969
Publikováno v:
Advances in Applied Ceramics. 114:231-237
The present paper deals with the development of lead zirconate titanate (PZT) fibres, pearls and fibre fragments, for their use as active phase in piezocomposites. As new a approach, the green ceramic components are shaped by polysulphone spinning, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4e89da449858c7a64e500458b33a3ef
https://doi.org/10.1179/1743676114y.0000000229
https://doi.org/10.1179/1743676114y.0000000229
Autor:
Sylvia E. Gebhardt, Nicole V. Ruiter, Kai Hohlfeld, Patrick Pfistner, Michael Zapf, Alexander Michaelis, Koen W. A. van Dongen, Hartmut Gemmeke
Publikováno v:
Advanced Engineering Materials. 20:1800423
Ultrasound Computer Tomography (USCT) medical imaging is a promising approach for early detection of breast cancer. At Karlsruhe Institute of Technology (KIT) a 3D USCT system is developed. The system operates 2041 ultrasound transducers in a semi-el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1baf00d0dbc9a69a881a32c44257021c
https://doi.org/10.1002/adem.201800423
https://doi.org/10.1002/adem.201800423
Publikováno v:
Advanced Engineering Materials. 20:1800431
Piezoelectric sensors and actuators have gained increasing interest in lightweight engineering for shape control, vibration damping, condition, and structural health monitoring. In combination with complementary control units, these adaptive structur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b09d2a410afa3c7d0000db41bd77e17
https://doi.org/10.1002/adem.201800431
https://doi.org/10.1002/adem.201800431
Autor:
Koen W. A. van Dongen, Hartmut Gemmeke, Nicole V. Ruiter, Sylvia Gebhardt, Gourav Shah, Alexander Michaelis, Kai Hohlfeld, Michael Zapf
3-D Ultrasound Computer Tomography (USCT) is aimed at early detection of breast cancer. The system uses Synthetic Aperture Focusing Technique (SAFT) for reconstruction of images. 2041 unfocused ultrasound transducers with approx. 2.5MHz center freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f16b5a76aafe55c278565165a0fbd21f
https://publikationen.bibliothek.kit.edu/220103155
https://publikationen.bibliothek.kit.edu/220103155
Publikováno v:
2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy (ISAF/PFM).
Structural devices with integrated adaptive functions are demanded in lightweight engineering especially in automotive and aerospace industries and mechanical engineering. As base of such systems, piezocomposites are of high interest. They can be mad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57baf592ece8126b80634f9329797e08
https://doi.org/10.1109/isaf.2013.6748675
https://doi.org/10.1109/isaf.2013.6748675
Autor:
Gerald Gerlach, Alexander Michaelis, Kai Hohlfeld, Gunnar Suchaneck, A. Eydam, Sylvia E. Gebhardt
Publikováno v:
2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy (ISAF/PFM).
In this work, the polarization state of piezofiber composites consisting of lead zirconate titanate (PZT) fibers embedded in epoxy resin was evaluated by means of thermal wave methods. The average pyroelectric coefficient was found to be one order of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03ec1c97eea02a43a5d79a33cc88f5a9
https://doi.org/10.1109/isaf.2013.6748683
https://doi.org/10.1109/isaf.2013.6748683