Model-Guided Manufacturing of Transducer Arrays Based on Single-Fibre Piezocomposites
| Autor: | Angerer, Martin, Zapf, Michael, Leyrer, Benjamin, Ruiter, Nicole V. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
ultrasound computer tomography
lcsh:T KLM model transducer array manufacturing electro-mechanical impedance lcsh:Technology lcsh:QC1-999 lcsh:Chemistry lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 single-fibre piezocomposites ddc:620 quality control lcsh:Engineering (General). Civil engineering (General) lcsh:QH301-705.5 Engineering & allied operations lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 14 Applied Sciences, Vol 10, Iss 4927, p 4927 (2020) Applied Sciences, 10 (14), 4927 |
| ISSN: | 2076-3417 |
| DOI: | 10.5445/ir/1000122268 |
| Popis: | 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&ndash Leedom&ndash 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 &phi t 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. |
| Databáze: | OpenAIRE |
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