Golinske, René ; Hoffmann, Maik ; Konetzke, Eric ; Unger, Alexander ; Rutsch, Matthias ; Kupnik, Mario (2015)
Diffraction loss calculation based on boundary element method for an air-coupled phased array.
IEEE IUS 2015. Taipei, Taiwan (21.10.2015-24.10.2015)
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
We present an efficient numerical method to analyze the diffraction loss of an ultrasonic air–coupled phased array transducer to an arbitrary located receiving aperture. The objective is the efficient calculation of diffraction loss for applications in which such an array is excited with arbitrary input signals on all channels for different beam steering angles. Available software, such as Field II, provide the pressure field in front of the phased transducer array, i.e. they assume a point source receiver. Our calculation method, however, is focused on directly calculating the diffraction loss to a given receiving aperture, such as a microphone or a receiving transducer, with arbitrary location and orientation. The boundary element method (BEM) is used for an efficient calculation. The entire model is implemented in the commercially avail- able software package Mathematica V10 from Wolfram Research. Excellent agreement between calculation results and microphone measurements validate the approach. For future work, we will use this model for further optimizing the development of high-performance air-coupled phased array transducer designs.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Golinske, René ; Hoffmann, Maik ; Konetzke, Eric ; Unger, Alexander ; Rutsch, Matthias ; Kupnik, Mario |
| Art des Eintrags: | Bibliographie |
| Titel: | Diffraction loss calculation based on boundary element method for an air-coupled phased array |
| Sprache: | Englisch |
| Publikationsjahr: | 21 Oktober 2015 |
| Veranstaltungstitel: | IEEE IUS 2015 |
| Veranstaltungsort: | Taipei, Taiwan |
| Veranstaltungsdatum: | 21.10.2015-24.10.2015 |
| Kurzbeschreibung (Abstract): | We present an efficient numerical method to analyze the diffraction loss of an ultrasonic air–coupled phased array transducer to an arbitrary located receiving aperture. The objective is the efficient calculation of diffraction loss for applications in which such an array is excited with arbitrary input signals on all channels for different beam steering angles. Available software, such as Field II, provide the pressure field in front of the phased transducer array, i.e. they assume a point source receiver. Our calculation method, however, is focused on directly calculating the diffraction loss to a given receiving aperture, such as a microphone or a receiving transducer, with arbitrary location and orientation. The boundary element method (BEM) is used for an efficient calculation. The entire model is implemented in the commercially avail- able software package Mathematica V10 from Wolfram Research. Excellent agreement between calculation results and microphone measurements validate the approach. For future work, we will use this model for further optimizing the development of high-performance air-coupled phased array transducer designs. |
| Freie Schlagworte: | Phased Array, Air-Coupled, Diffraction loss, 40 kHz Ultrasound, BEM, Boundary Element Method |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektromechanische Konstruktionen (aufgelöst 18.12.2018) 18 Fachbereich Elektrotechnik und Informationstechnik > Mess- und Sensortechnik 18 Fachbereich Elektrotechnik und Informationstechnik |
| Hinterlegungsdatum: | 04 Nov 2015 13:44 |
| Letzte Änderung: | 04 Nov 2015 14:05 |
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