Development of an integrated piezo-fibre ultrasound transducer for 3D Ultrasound computer tomography (3D USCT)
Cooperation of Technische Universität Dresden and Fraunhofer IKTS, Dresden (Hohlfeld, Gebhardt) & Karlsruhe Institute for Technology (KIT), Institute for data processing and electronics (IPE) (Zapf, Ruiter)
Aims
Development of a reliable production process of piezo-fibre ultrasound transducers and evaluation and characterization of acoustic behavior of the composite transducer.
Vision are reproducible ultrasound transducers for 3D ultrasound computer tomography.
Further information: https://www.ipe.kit.edu/167.php.
Results
- Design and production of PZT-fibers Ø 450 µm, multiple composite discs Ø 23 mm, thickness 0.40 to 2.05 mm
- Optical evaluation of the spatial accuracy of the fibres into the matrix material
- Metalisation via sputtering: Au- and Cr/Au layers (for improved adhesion)
- Further analysis (in progress):
- Analysis of the polarization process, characterization of individual fibres via impedance spectroscopy
- Built-up of prototypes and electrical connectivity
- Acoustical characterization with an hydrophone and electrical with a phase impedance analysator
- Evaluation of experimental results against simulation and expectations
Methods
- AP 1: Design of fibre based ultrasound transducers via simulation (IPE)
- AP 2: Production (IfWW)
- AP 3: Characterization and evaluation (IfWW und IPE)
- AP 4: Integration and electrical connectivity into the US probe (IfWW and IPE)
- AP 5: Optimization of the design of the US probe, for instance bandwidth, sound pressure (IPE und IfWW)
Publications
| [Hoh15] | Hohlfeld K, Gebhardt S, Schönecker A, Michaelis A: „PZT components derived from polysulphone spinning process“. In: Advances in Applied Ceramics 2015; 114(4), 231-237. |
| [Zap15] | Zapf M, Hohlfeld K, Shah G, Gebhardt S, Gemmeke H, Michaelis A, Ruiter N V: „Evaluation of piezo composite based omnidirectional single fibre transducers for 3D USCT“. In: Proc. IEEE Int. Ultrasonics Symp., October 21-24, 2015, Taipei (Taiwan). |
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Contact
Michael Zapf, M.Sc.
KIT Campus-Nord
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
E-Mail: michael.zapf@…
Dr.-Ing. Kai Hohlfeld
Technische Universität Dresden
Fakultät Maschinenwesen
Institut für Werkstoffwissenschaft (IfWW)
Professur für Anorg.-Nichtmet. Werkstoffe
01062 Dresden
E-Mail: kai.hohlfeld@…
