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DFG CRC/Transregio 39 PT-PIESA
SP K04

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)
  1. Aims
  2. Results
  3. Methods
  4. Publications
  5. Contact

 

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:


Dr.-Ing. Kai Hohlfeld
Technische Universität Dresden
Fakultät Maschinenwesen
Institut für Werkstoffwissenschaft (IfWW)
Professur für Anorg.-Nichtmet. Werkstoffe
01062 Dresden

E-Mail:

 

 

 

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