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Model-Guided Manufacturing of Transducer Arrays Based on Single-Fibre Piezocomposites

Angerer, Martin; Zapf, Michael; Leyrer, Benjamin; Ruiter, Nicole V.

Abstract (englisch):
For breast cancer imaging, ultrasound computer tomography (USCT) is an emerging technology. To improve the image quality of our full 3-D system, a new transducer array system (TAS) design was previously proposed. This work presents a manufacturing approach which realises this new design. To monitor the transducer quality during production, the electro-mechanical impedance (EMI) was measured initially and after each assembly step. To evaluate the measured responses, an extended Krimholtz–Leedom–Matthaei (KLM) transducer model was used. The model aids in interpreting the measured responses and presents a useful tool for evaluating parasitic electric effects and attenuation at resonance. For quality control, the phase angle at thickness resonance φt was found to be the most specific EMI property. It can be used to verify the functionality of the piezocomposites and allows reliable detection of faults in the acoustic backing. Evaluating the final response of 68 transducers showed 5% variance of the series resonance frequency. This indicates good consistency of derived ultrasound performance parameters.

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Verlagsausgabe §
DOI: 10.5445/IR/1000122268
Veröffentlicht am 30.07.2020
DOI: 10.3390/app10144927
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2076-3417
KITopen-ID: 1000122268
Erschienen in Applied Sciences
Band 10
Heft 14
Seiten 4927
Vorab online veröffentlicht am 17.07.2020
Schlagwörter transducer array manufacturing; single-fibre piezocomposites; KLM model; electro-mechanical impedance; quality control; ultrasound computer tomography
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