[{"date_updated":"2022-01-06T06:52:20Z","title":"Separation of mode-specific signals in a fluid-filled circular waveguide","status":"public","year":"2007","author":[{"full_name":"Rautenberg, Jens","last_name":"Rautenberg","first_name":"Jens"},{"full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd","id":"213"}],"user_id":"15911","_id":"15340","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"There are a couple of acoustic systems that are well suited for continuous and reliable concentration measurement of liquids, but the reliability is a great challenge: Most systems determine the amplitude ratio of deflected ultrasound bursts at different boundaries as well as the sound velocity of the liquid in order to calculate its acoustic impedance and therewith its density. The problem is the sensitivity of variations of reference material properties as well as abrasion or soiling of the boundaries. This contribution is about a new model-based method that uses the whole surface of an acoustic waveguide as reference boundary. On the one hand the integral over a large boundary decreases influence of small boundary defects. On the other hand it is possible to analyze different modes of sound in the fluid. This redundancy can be used to increase reliability. The decomposition of the received signal in its modal components by means of principle component analysis will be discussed in detail. It will be shown that it is possible to determine the amplitudes of each mode by means of one measured signal at the end of the waveguide, even if the transducer and the electronic components are of very simple kind."}],"publication":"Proceedings of the International Congress on Ultrasonics","citation":{"short":"J. Rautenberg, B. Henning, in: Proceedings of the International Congress on Ultrasonics, 2007.","chicago":"Rautenberg, Jens, and Bernd Henning. “Separation of Mode-Specific Signals in a Fluid-Filled Circular Waveguide.” In <i>Proceedings of the International Congress on Ultrasonics</i>, 2007.","apa":"Rautenberg, J., &#38; Henning, B. (2007). Separation of mode-specific signals in a fluid-filled circular waveguide. In <i>Proceedings of the International Congress on Ultrasonics</i>.","ieee":"J. Rautenberg and B. Henning, “Separation of mode-specific signals in a fluid-filled circular waveguide,” in <i>Proceedings of the International Congress on Ultrasonics</i>, 2007.","ama":"Rautenberg J, Henning B. Separation of mode-specific signals in a fluid-filled circular waveguide. In: <i>Proceedings of the International Congress on Ultrasonics</i>. ; 2007.","bibtex":"@inproceedings{Rautenberg_Henning_2007, title={Separation of mode-specific signals in a fluid-filled circular waveguide}, booktitle={Proceedings of the International Congress on Ultrasonics}, author={Rautenberg, Jens and Henning, Bernd}, year={2007} }","mla":"Rautenberg, Jens, and Bernd Henning. “Separation of Mode-Specific Signals in a Fluid-Filled Circular Waveguide.” <i>Proceedings of the International Congress on Ultrasonics</i>, 2007."},"type":"conference","department":[{"_id":"49"}],"date_created":"2019-12-17T13:23:16Z"},{"citation":{"ieee":"H.-M. Sonnenberg, A. Schmidt-Schoenian, J. Rautenberg, C. Unverzagt, R. Kehl, and B. Henning, <i>Ultraschallzähler</i>. 2007.","apa":"Sonnenberg, H.-M., Schmidt-Schoenian, A., Rautenberg, J., Unverzagt, C., Kehl, R., &#38; Henning, B. (2007). <i>Ultraschallzähler</i>.","chicago":"Sonnenberg, Hans-Michael, Axel Schmidt-Schoenian, Jens Rautenberg, Carsten Unverzagt, Romina Kehl, and Bernd Henning. <i>Ultraschallzähler</i>, 2007.","short":"H.-M. Sonnenberg, A. Schmidt-Schoenian, J. Rautenberg, C. Unverzagt, R. Kehl, B. Henning, Ultraschallzähler, 2007.","mla":"Sonnenberg, Hans-Michael, et al. <i>Ultraschallzähler</i>. 2007.","bibtex":"@book{Sonnenberg_Schmidt-Schoenian_Rautenberg_Unverzagt_Kehl_Henning_2007, title={Ultraschallzähler}, author={Sonnenberg, Hans-Michael and Schmidt-Schoenian, Axel and Rautenberg, Jens and Unverzagt, Carsten and Kehl, Romina and Henning, Bernd}, year={2007} }","ama":"Sonnenberg H-M, Schmidt-Schoenian A, Rautenberg J, Unverzagt C, Kehl R, Henning B. <i>Ultraschallzähler</i>.; 2007."},"date_created":"2019-12-17T13:24:08Z","department":[{"_id":"49"}],"type":"misc","author":[{"full_name":"Sonnenberg, Hans-Michael","first_name":"Hans-Michael","last_name":"Sonnenberg"},{"full_name":"Schmidt-Schoenian, Axel","first_name":"Axel","last_name":"Schmidt-Schoenian"},{"last_name":"Rautenberg","first_name":"Jens","full_name":"Rautenberg, Jens"},{"last_name":"Unverzagt","first_name":"Carsten","full_name":"Unverzagt, Carsten"},{"first_name":"Romina","last_name":"Kehl","full_name":"Kehl, Romina"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"title":"Ultraschallzähler","year":"2007","status":"public","date_updated":"2022-01-06T06:52:20Z","_id":"15341","language":[{"iso":"eng"}],"user_id":"15911"},{"place":"Berlin","date_created":"2019-12-17T13:25:15Z","department":[{"_id":"49"}],"type":"conference","citation":{"mla":"Vössing, Torsten, et al. “Sensorelektronik Zur Bestimmung von Reflexionen Sensoroberflächennaher Schichten.” <i>Fortschritte Der Akustik</i>, edited by Schew-Ram Mehra, Dt. Ges. für Akustik, 2007.","ama":"Vössing T, Rautenberg J, Henning B. Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten. In: Mehra S-R, ed. <i>Fortschritte Der Akustik</i>. Berlin: Dt. Ges. für Akustik; 2007.","bibtex":"@inproceedings{Vössing_Rautenberg_Henning_2007, place={Berlin}, title={Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten}, booktitle={Fortschritte der Akustik}, publisher={Dt. Ges. für Akustik}, author={Vössing, Torsten and Rautenberg, Jens and Henning, Bernd}, editor={Mehra, Schew-RamEditor}, year={2007} }","apa":"Vössing, T., Rautenberg, J., &#38; Henning, B. (2007). Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten. In S.-R. Mehra (Ed.), <i>Fortschritte der Akustik</i>. Berlin: Dt. Ges. für Akustik.","ieee":"T. Vössing, J. Rautenberg, and B. Henning, “Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten,” in <i>Fortschritte der Akustik</i>, 2007.","chicago":"Vössing, Torsten, Jens Rautenberg, and Bernd Henning. “Sensorelektronik Zur Bestimmung von Reflexionen Sensoroberflächennaher Schichten.” In <i>Fortschritte Der Akustik</i>, edited by Schew-Ram Mehra. Berlin: Dt. Ges. für Akustik, 2007.","short":"T. Vössing, J. Rautenberg, B. Henning, in: S.-R. Mehra (Ed.), Fortschritte Der Akustik, Dt. Ges. für Akustik, Berlin, 2007."},"publication":"Fortschritte der Akustik","abstract":[{"text":"In der Ultraschallmesstechnik ist der Einsatz des Impuls-Echoverfahrens verbreitet. Wird nur ein Ultraschallwandler eingesetzt, benötigt man für das sequentielle Senden und Empfangen einen Sende-/Empfangsumschalter. Häufig werden aber nicht nur Impulse gesendet, sondern auch sogenannte Bursts, die aus mehreren Wellenzügen bestehen. Die während des Sendebetriebs empfangenen Ultraschallwellen, die z. B. durch Reflexionen von nahe gelegenen Hindernissen entstehen, können bei diesen umschaltenden Systemen nicht ausgewertet werden.\r\nIn diesem Beitrag wird eine Sensor-Interface-Elektronik vorgestellt, die das gleichzeitige Senden und Empfangen von Ultraschallsignalen mit nur einem Ultraschallwandler erlaubt. Die dazu erforderliche Trennung von Sende- und Empfangssignal wird durch einen Richtkoppler ermöglicht, der mit vergleichsweise geringem technischem Aufwand aus Breitbandübertragern aufgebaut ist. Eine geeignete Dimensionierung für die verkoppelten Übertrager wurde durch die Analyse der zugehörigen Streumatrix dieses Aufbaus gefunden. Die Arbeitsweise sowie die Bedeutung der Anpassung der Tore des Richtkopplers wird anhand der Ankopplung verschiedener Medien an den Wandler erläutert. Die angekoppelte akustische Last beeinflusst dabei auch die elektrischen Eigenschaften des Sensors.\r\nDurch den Einsatz dieser Sensorelektronik wird es möglich, Reflexionen in unmittelbarer Nähe der Sensoroberfläche aufzunehmen, ohne dass z. B. Vorlaufkörper eingesetzt werden müssen. Möglichkeiten zur selbsttätigen Abstimmung der Sensorelektronik auf den angeschlossenen Ultraschallwandler bzw. dessen Parameteränderungen werden diskutiert.","lang":"eng"}],"_id":"15342","publisher":"Dt. Ges. für Akustik","language":[{"iso":"eng"}],"editor":[{"last_name":"Mehra","first_name":"Schew-Ram","full_name":"Mehra, Schew-Ram"}],"user_id":"15911","author":[{"full_name":"Vössing, Torsten","last_name":"Vössing","first_name":"Torsten"},{"first_name":"Jens","last_name":"Rautenberg","full_name":"Rautenberg, Jens"},{"id":"213","full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"}],"publication_identifier":{"isbn":["9783980865937"]},"status":"public","year":"2007","title":"Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten","date_updated":"2022-01-06T06:52:20Z"},{"publication_identifier":{"isbn":["9783980865937"]},"author":[{"full_name":"Vössing, Torsten","last_name":"Vössing","first_name":"Torsten"},{"full_name":"Rautenberg, Jens","last_name":"Rautenberg","first_name":"Jens"},{"id":"213","full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd"}],"conference":{"location":"Stuttgar","name":"3. Deutsche Jahrestagung für Akustik (DAGA 2007)","start_date":"19.03.2007 ","end_date":"22.03.2007 "},"title":"Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten","year":"2007","status":"public","date_updated":"2022-01-06T06:52:20Z","publisher":"Dt. Ges. für Akustik","_id":"15343","language":[{"iso":"eng"}],"editor":[{"last_name":"Mehra","first_name":"Schew-Ram","full_name":"Mehra, Schew-Ram"}],"user_id":"15911","citation":{"mla":"Vössing, Torsten, et al. “Sensorelektronik Zur Bestimmung von Reflexionen Sensoroberflächennaher Schichten.” <i>Fortschritte Der Akustik</i>, edited by Schew-Ram Mehra, Dt. Ges. für Akustik, 2007.","ama":"Vössing T, Rautenberg J, Henning B. Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten. In: Mehra S-R, ed. <i>Fortschritte Der Akustik</i>. Berlin: Dt. Ges. für Akustik; 2007.","bibtex":"@inproceedings{Vössing_Rautenberg_Henning_2007, place={Berlin}, title={Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten}, booktitle={Fortschritte der Akustik}, publisher={Dt. Ges. für Akustik}, author={Vössing, Torsten and Rautenberg, Jens and Henning, Bernd}, editor={Mehra, Schew-RamEditor}, year={2007} }","apa":"Vössing, T., Rautenberg, J., &#38; Henning, B. (2007). Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten. In S.-R. Mehra (Ed.), <i>Fortschritte der Akustik</i>. Berlin: Dt. Ges. für Akustik.","ieee":"T. Vössing, J. Rautenberg, and B. Henning, “Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten,” in <i>Fortschritte der Akustik</i>, Stuttgar, 2007.","chicago":"Vössing, Torsten, Jens Rautenberg, and Bernd Henning. “Sensorelektronik Zur Bestimmung von Reflexionen Sensoroberflächennaher Schichten.” In <i>Fortschritte Der Akustik</i>, edited by Schew-Ram Mehra. Berlin: Dt. Ges. für Akustik, 2007.","short":"T. Vössing, J. Rautenberg, B. Henning, in: S.-R. Mehra (Ed.), Fortschritte Der Akustik, Dt. Ges. für Akustik, Berlin, 2007."},"publication":"Fortschritte der Akustik","abstract":[{"text":"In der Ultraschallmesstechnik ist der Einsatz des Impuls-Echoverfahrens verbreitet. Wird nur ein Ultraschallwandler eingesetzt, benötigt man für das sequentielle Senden und Empfangen einen Sende-/Empfangsumschalter. Häufig werden aber nicht nur Impulse gesendet, sondern auch sogenannte Bursts, die aus mehreren Wellenzügen bestehen. Die während des Sendebetriebs empfangenen Ultraschallwellen, die z. B. durch Reflexionen von nahe gelegenen Hindernissen entstehen, können bei diesen umschaltenden Systemen nicht ausgewertet werden.\r\nIn diesem Beitrag wird eine Sensor-Interface-Elektronik vorgestellt, die das gleichzeitige Senden und Empfangen von Ultraschallsignalen mit nur einem Ultraschallwandler erlaubt. Die dazu erforderliche Trennung von Sende- und Empfangssignal wird durch einen Richtkoppler ermöglicht, der mit vergleichsweise geringem technischem Aufwand aus Breitbandübertragern aufgebaut ist. Eine geeignete Dimensionierung für die verkoppelten Übertrager wurde durch die Analyse der zugehörigen Streumatrix dieses Aufbaus gefunden. Die Arbeitsweise sowie die Bedeutung der Anpassung der Tore des Richtkopplers wird anhand der Ankopplung verschiedener Medien an den Wandler erläutert. Die angekoppelte akustische Last beeinflusst dabei auch die elektrischen Eigenschaften des Sensors.\r\nDurch den Einsatz dieser Sensorelektronik wird es möglich, Reflexionen in unmittelbarer Nähe der Sensoroberfläche aufzunehmen, ohne dass z. B. Vorlaufkörper eingesetzt werden müssen. Möglichkeiten zur selbsttätigen Abstimmung der Sensorelektronik auf den angeschlossenen Ultraschallwandler bzw. dessen Parameteränderungen werden diskutiert.","lang":"eng"}],"date_created":"2019-12-17T13:31:04Z","place":"Berlin","department":[{"_id":"49"}],"type":"conference"},{"date_created":"2019-12-17T14:22:24Z","department":[{"_id":"49"}],"type":"conference","citation":{"chicago":"Vössing, Torsten, Jens Rautenberg, Romina Kehl, and Bernd Henning. “Simultaneous Transmitting and Receiving with Ultrasonic Sensors,” 2007.","short":"T. Vössing, J. Rautenberg, R. Kehl, B. Henning, in: 2007.","ieee":"T. Vössing, J. Rautenberg, R. Kehl, and B. Henning, “Simultaneous transmitting and receiving with ultrasonic sensors,” presented at the 3th International Conference Sensor + Test 2007, Nuremberg, 2007.","apa":"Vössing, T., Rautenberg, J., Kehl, R., &#38; Henning, B. (2007). Simultaneous transmitting and receiving with ultrasonic sensors. Presented at the 3th International Conference Sensor + Test 2007, Nuremberg.","bibtex":"@inproceedings{Vössing_Rautenberg_Kehl_Henning_2007, title={Simultaneous transmitting and receiving with ultrasonic sensors}, author={Vössing, Torsten and Rautenberg, Jens and Kehl, Romina and Henning, Bernd}, year={2007} }","ama":"Vössing T, Rautenberg J, Kehl R, Henning B. Simultaneous transmitting and receiving with ultrasonic sensors. In: ; 2007.","mla":"Vössing, Torsten, et al. <i>Simultaneous Transmitting and Receiving with Ultrasonic Sensors</i>. 2007."},"abstract":[{"lang":"eng","text":"In many applications ultrasonic transducers are used for transmitting and receiving ultrasonic waves. Ultrasonic sensor systems meet the practical requirements of industrial applications quite well. Typical sensor applications are for example the measurement of distance and thickness. Especially if only one ultrasonic transceiver and the well-known pulse-echo-method are used, the sensor electronics has to switch from transmitting to receiving mode. This is one of the most limiting properties because the probe can not receive echoes from nearby obstacles or thin material layers. This contribution deals with the development of an electronic interface circuit for ultrasonic sensors allowing transmitting and receiving of acoustic signals simultaneously. There are already several methods to separate the transmitted from the received signal for instance the well-known circulator in the telephone, the differential transformer mentioned by Bradfield [1] or a directional coupler [2]. The directional coupler consists of two broadband transformers linked with each other in such a way that it equally distributes the input power at port one to the third and fourth port, while port two is isolated. This circuit is also known as 3 dB directional coupler and makes it possible to get reference echoes directly from the interface between the sensor and the medium of interest. Several reflectors or multiple sound paths such as used in ultrasonic density measurement systems are unnecessary [3]."}],"language":[{"iso":"eng"}],"_id":"15344","user_id":"15911","publication_identifier":{"isbn":["978-3-9810993-2-4"]},"author":[{"full_name":"Vössing, Torsten","last_name":"Vössing","first_name":"Torsten"},{"full_name":"Rautenberg, Jens","last_name":"Rautenberg","first_name":"Jens"},{"last_name":"Kehl","first_name":"Romina","full_name":"Kehl, Romina"},{"id":"213","full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"}],"conference":{"location":"Nuremberg","start_date":"22.05.2007","name":"3th International Conference Sensor + Test 2007","end_date":"24.05.2007"},"status":"public","title":"Simultaneous transmitting and receiving with ultrasonic sensors","year":"2007","date_updated":"2022-01-06T06:52:21Z"},{"user_id":"15911","language":[{"iso":"eng"}],"_id":"15345","date_updated":"2022-01-06T06:52:21Z","author":[{"full_name":"Vössing, Torsten","last_name":"Vössing","first_name":"Torsten"},{"full_name":"Rautenberg, Jens","last_name":"Rautenberg","first_name":"Jens"},{"full_name":"Schröder, Andreas","last_name":"Schröder","first_name":"Andreas"},{"first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd","id":"213"}],"conference":{"end_date":"18.08.2007","location":"Xi’An, China","name":"8th International Conference on Electronic Measurement & Instruments, ICEMI 2007","start_date":"16.08.2007"},"title":"Ultrasonic measurement of the characteristic acoustic impedance using a directional coupler to analyse reference reflections from thin layers","year":"2007","status":"public","department":[{"_id":"49"}],"type":"conference","date_created":"2019-12-17T14:27:14Z","abstract":[{"lang":"eng","text":"In this contribution the application of a directional coupler for analysing reference reflections from thin layers in ultrasonic measurement of the characteristic acoustic impedance is presented. In a prior work ([2]) it was shown, that a directional coupler can be used in combination with an ultrasonic transducer to get reflections from layers that are very close to the transducers surface. Since the directional coupler provides the opportunity to send and receive signals at the same time, these layers can be very thin ({\\textless} 1 mm). Reflections that arrive at the transducer during the sending process can be analysed because the directional coupler separates the receiving signal from the input signal of the transducer. When only one transducer is used to measure the acoustic impedance of a liquid the reflections from the thin layer reach the transducer after a very short time. The reflections sum up and with the concept of reflection and transmission coefficients a relation is found between the measured amplitude and a reference amplitude which was measured before. The exciting signal could be a burst of some periods of a sinusoidal alternating voltage. The advantages of using thin layers for the described task are the small geometry that allows flexible application of the sensor and the minimisation of temperature gradients within the medium because thin layers can follow thermal fluctuations faster than thick ones. In this paper the functional principle and first achievements are presented."}],"citation":{"apa":"Vössing, T., Rautenberg, J., Schröder, A., &#38; Henning, B. (2007). Ultrasonic measurement of the characteristic acoustic impedance using a directional coupler to analyse reference reflections from thin layers. Presented at the 8th International Conference on Electronic Measurement &#38; Instruments, ICEMI 2007, Xi’An, China.","ieee":"T. Vössing, J. Rautenberg, A. Schröder, and B. Henning, “Ultrasonic measurement of the characteristic acoustic impedance using a directional coupler to analyse reference reflections from thin layers,” presented at the 8th International Conference on Electronic Measurement &#38; Instruments, ICEMI 2007, Xi’An, China, 2007.","chicago":"Vössing, Torsten, Jens Rautenberg, Andreas Schröder, and Bernd Henning. “Ultrasonic Measurement of the Characteristic Acoustic Impedance Using a Directional Coupler to Analyse Reference Reflections from Thin Layers,” 2007.","short":"T. Vössing, J. Rautenberg, A. Schröder, B. Henning, in: 2007.","mla":"Vössing, Torsten, et al. <i>Ultrasonic Measurement of the Characteristic Acoustic Impedance Using a Directional Coupler to Analyse Reference Reflections from Thin Layers</i>. 2007.","ama":"Vössing T, Rautenberg J, Schröder A, Henning B. Ultrasonic measurement of the characteristic acoustic impedance using a directional coupler to analyse reference reflections from thin layers. In: ; 2007.","bibtex":"@inproceedings{Vössing_Rautenberg_Schröder_Henning_2007, title={Ultrasonic measurement of the characteristic acoustic impedance using a directional coupler to analyse reference reflections from thin layers}, author={Vössing, Torsten and Rautenberg, Jens and Schröder, Andreas and Henning, Bernd}, year={2007} }"}},{"year":"2006","title":"Schwingungsverhalten eines flüssigkeitsgefüllten Tanks","status":"public","author":[{"full_name":"Kehl, Romina","last_name":"Kehl","first_name":"Romina"},{"full_name":"Rautenberg, Jens","first_name":"Jens","last_name":"Rautenberg"},{"id":"213","last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd"}],"conference":{"name":"32. Deutsche Jahrestagung für Akustik (DAGA 2006)","start_date":"21.03.2006","location":"Braunschweig","end_date":"23.03.2006"},"date_updated":"2022-01-06T06:52:21Z","page":"407-408","language":[{"iso":"eng"}],"_id":"15347","user_id":"15911","citation":{"mla":"Kehl, Romina, et al. <i>Schwingungsverhalten Eines Flüssigkeitsgefüllten Tanks</i>. 2006, pp. 407–08.","ama":"Kehl R, Rautenberg J, Henning B. Schwingungsverhalten eines flüssigkeitsgefüllten Tanks. In: ; 2006:407-408.","bibtex":"@inproceedings{Kehl_Rautenberg_Henning_2006, title={Schwingungsverhalten eines flüssigkeitsgefüllten Tanks}, author={Kehl, Romina and Rautenberg, Jens and Henning, Bernd}, year={2006}, pages={407–408} }","apa":"Kehl, R., Rautenberg, J., &#38; Henning, B. (2006). Schwingungsverhalten eines flüssigkeitsgefüllten Tanks (pp. 407–408). Presented at the 32. Deutsche Jahrestagung für Akustik (DAGA 2006), Braunschweig.","ieee":"R. Kehl, J. Rautenberg, and B. Henning, “Schwingungsverhalten eines flüssigkeitsgefüllten Tanks,” presented at the 32. Deutsche Jahrestagung für Akustik (DAGA 2006), Braunschweig, 2006, pp. 407–408.","short":"R. Kehl, J. Rautenberg, B. Henning, in: 2006, pp. 407–408.","chicago":"Kehl, Romina, Jens Rautenberg, and Bernd Henning. “Schwingungsverhalten Eines Flüssigkeitsgefüllten Tanks,” 407–8, 2006."},"abstract":[{"text":"Um das Schwingungsverhalten eines mit Flüssigkeit\r\ngefüllten zylindrischen Stahltanks mit beliebiger Füllhöhe zu\r\nmodellieren, werden Ansätze aus der Schalentheorie genutzt.\r\nVerschiedene analytische Modelle und Vereinfachungen\r\nwerden gegenübergestellt und für den leeren sowie komplett\r\ngefüllten Zylinder gelöst. Zudem wird ein semianalytisches\r\nModell für den teilweise gefüllten Zylinder entworfen.\r\nSimulationsergebnisse aus FEM-Simulationen sowie\r\nErgebnisse aus Testmessungen werden den Modellwerten\r\ngegenübergestellt.","lang":"eng"}],"date_created":"2019-12-17T14:30:29Z","type":"conference","department":[{"_id":"49"}]},{"conference":{"location":"Hannover","start_date":"12.10.2006","name":"Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC 2006)","end_date":"14.10.2006"},"author":[{"full_name":"Kehl, Romina","first_name":"Romina","last_name":"Kehl"},{"first_name":"Ralf","last_name":"Stroop","full_name":"Stroop, Ralf"},{"first_name":"David","last_name":"Oliva Uribe","full_name":"Oliva Uribe, David"},{"full_name":"Hemsel, Tobias","first_name":"Tobias","last_name":"Hemsel"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"year":"2006","title":"Tactile sensors for determination of elastic properties of brain tissue mimicking phantoms","status":"public","date_updated":"2022-01-06T06:52:21Z","language":[{"iso":"eng"}],"_id":"15348","user_id":"15911","citation":{"ieee":"R. Kehl, R. Stroop, D. Oliva Uribe, T. Hemsel, and B. Henning, “Tactile sensors for determination of elastic properties of brain tissue mimicking phantoms,” presented at the Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC 2006), Hannover, 2006.","apa":"Kehl, R., Stroop, R., Oliva Uribe, D., Hemsel, T., &#38; Henning, B. (2006). Tactile sensors for determination of elastic properties of brain tissue mimicking phantoms. Presented at the Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC 2006), Hannover.","short":"R. Kehl, R. Stroop, D. Oliva Uribe, T. Hemsel, B. Henning, in: 2006.","chicago":"Kehl, Romina, Ralf Stroop, David Oliva Uribe, Tobias Hemsel, and Bernd Henning. “Tactile Sensors for Determination of Elastic Properties of Brain Tissue Mimicking Phantoms,” 2006.","mla":"Kehl, Romina, et al. <i>Tactile Sensors for Determination of Elastic Properties of Brain Tissue Mimicking Phantoms</i>. 2006.","bibtex":"@inproceedings{Kehl_Stroop_Oliva Uribe_Hemsel_Henning_2006, title={Tactile sensors for determination of elastic properties of brain tissue mimicking phantoms}, author={Kehl, Romina and Stroop, Ralf and Oliva Uribe, David and Hemsel, Tobias and Henning, Bernd}, year={2006} }","ama":"Kehl R, Stroop R, Oliva Uribe D, Hemsel T, Henning B. Tactile sensors for determination of elastic properties of brain tissue mimicking phantoms. In: ; 2006."},"abstract":[{"text":"In spite of the outstanding importance of neuronavigational techniques the neurosurgeon has still highly to rely on his visual as well as tactile sense and his experience in distinguishing tumor tissue from intact brain parenchyma. All the more - as neuronavigation is based on preoperative imaging scans - considerable brain shift may occur during surgery and that will lead to erroneous results. Furthermore the surgeon loses his tactile sense during endoscopic surgery. Therefore control of tissue manipulation is limited today to the fiberoptic image techniques, possibly ensured by neuronavigational supervision or haptic feedback systems. In robotic guided surgery the missing tactile sensing will be particularly crucial. The human sense of touch is a highly complex sensory perception comprising epicritical and propiozeptive information processing. The development of a tool for intraoperative tactile perception will be a highly challenging task to improve the safety during surgery. Different sensor concepts (elasticity probe and resonant piezoelectric sensor) have been set up and adapted to distinguish elasticity differences in soft tissue mimicking gel phantoms. The elasticity probe is based on two leaf springs of different bending stiffness. The two tips of the beams act both on the material to be tested. The two deflections measured by strain gauges are processed in a mathematical model calculating the phantoms' stiffness. In contrast to this differential sensing concept the piezoelectric sensor, which is driven at its resonance, measures stiffness and damping of the phantoms by evaluating frequency or phase shift and amplitude change. Gelatine gels of different concentrations (5{\\%}, 10{\\%}, 20{\\%} of gelatine) have been used for a characterization of sensor elements and their sensitivity to elasticity distinctions. Using the hand-guided elasticity probe the determination of gel elasticity is performed with high reliability. By constant mechanical load the piezoelectric sensor also presents a proportional dependency of tissue elasticity.","lang":"eng"}],"date_created":"2019-12-17T14:33:15Z","department":[{"_id":"49"}],"type":"conference"},{"page":"55-73","language":[{"iso":"eng"}],"_id":"15349","user_id":"15911","status":"public","year":"2006","title":"Messung der akustischen Impedanz einer Flüssigkeit in einem akustischen Wellenleiter","publication_identifier":{"isbn":["978-3-8322-5419-3"]},"author":[{"last_name":"Rautenberg","first_name":"Jens","full_name":"Rautenberg, Jens"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"conference":{"location":"Bayreuth","start_date":"05.10.2006","name":"XX. Messtechnisches Symposium 2006 (AHMT)","end_date":"07.10.2006"},"date_updated":"2022-01-06T06:52:21Z","date_created":"2019-12-17T14:34:33Z","type":"conference","department":[{"_id":"49"}],"citation":{"apa":"Rautenberg, J., &#38; Henning, B. (2006). Messung der akustischen Impedanz einer Flüssigkeit in einem akustischen Wellenleiter (pp. 55–73). Presented at the XX. Messtechnisches Symposium 2006 (AHMT), Bayreuth.","ieee":"J. Rautenberg and B. Henning, “Messung der akustischen Impedanz einer Flüssigkeit in einem akustischen Wellenleiter,” presented at the XX. Messtechnisches Symposium 2006 (AHMT), Bayreuth, 2006, pp. 55–73.","short":"J. Rautenberg, B. Henning, in: 2006, pp. 55–73.","chicago":"Rautenberg, Jens, and Bernd Henning. “Messung Der Akustischen Impedanz Einer Flüssigkeit in Einem Akustischen Wellenleiter,” 55–73, 2006.","mla":"Rautenberg, Jens, and Bernd Henning. <i>Messung Der Akustischen Impedanz Einer Flüssigkeit in Einem Akustischen Wellenleiter</i>. 2006, pp. 55–73.","ama":"Rautenberg J, Henning B. Messung der akustischen Impedanz einer Flüssigkeit in einem akustischen Wellenleiter. In: ; 2006:55-73.","bibtex":"@inproceedings{Rautenberg_Henning_2006, title={Messung der akustischen Impedanz einer Flüssigkeit in einem akustischen Wellenleiter}, author={Rautenberg, Jens and Henning, Bernd}, year={2006}, pages={55–73} }"},"abstract":[{"text":"Die kontinuierliche und zuverlässige Konzentrationsmessung in Flüssigkeiten\r\nob zur Dosierung oder Prozessverfolgung stellt auch heute noch eine große\r\nmesstechnische Herausforderung dar. Akustische Sensorsysteme sind für diese\r\nMessaufgabe insbesondere unter industriellen Einsatzbedingungen prädestiniert.\r\nEs gibt eine Vielzahl verschiedener sorgfältig entworfener Ultraschallsensoren,\r\ndie diese Aufgabe durch Bestimmung der Schallgeschwindigkeit und\r\nder akustischen Impedanz lösen. Sie basieren meist auf senkrechten Durchgängen\r\ndes Schalls durch Grenzschichten, was sie sehr empfindlich gegenüber Ablagerungen\r\nmacht.\r\nDieser Beitrag liefert einen neuen Ansatz, indem die gesamte Oberfläche des\r\nMessraumes als akustischer Wellenleiter gestaltet und genutzt wird. Es hat sich\r\ngezeigt, dass sich durch Ausnutzen verschiedener Simulationswerkzeuge die\r\nHauptkomponenten eines Empfangssignals berechnen lassen, die eindeutig den\r\nverschiedenen modalen Anteilen zugeordnet werden können. Damit ist es möglich,\r\nallein aus dem Empfangssignal eines herkömmlichen Ultraschallwandlers\r\nauf die modalen Anteilsfaktoren zu schließen. Mit Hilfe dieser Koeffizienten\r\nund eines Modells des akustischen Wellenleiters lässt sich ein Gleichungssystem\r\naufstellen, das den Zusammenhang zwischen Dissipation in der Flüssigkeit\r\nsowie der durch Wellenleitergeometrie und Impedanzverhältnisse bedingten\r\nSignaldämpfung und den Amplituden der modalen Anteilsfaktoren beschreibt.","lang":"eng"}]},{"date_created":"2019-12-17T15:35:07Z","department":[{"_id":"49"}],"type":"conference","citation":{"bibtex":"@inproceedings{Unverzagt_Rautenberg_Kehl_Henning_2006, title={Optimization of ultrasound reflecting mirrors}, booktitle={2006 IEEE International Ultrasonics Symposium}, author={Unverzagt, Carsten and Rautenberg, Jens and Kehl, Romina and Henning, Bernd}, year={2006}, pages={1390–1393} }","ama":"Unverzagt C, Rautenberg J, Kehl R, Henning B. Optimization of ultrasound reflecting mirrors. In: <i>2006 IEEE International Ultrasonics Symposium</i>. ; 2006:1390-1393.","mla":"Unverzagt, Carsten, et al. “Optimization of Ultrasound Reflecting Mirrors.” <i>2006 IEEE International Ultrasonics Symposium</i>, 2006, pp. 1390–93.","chicago":"Unverzagt, Carsten, Jens Rautenberg, Romina Kehl, and Bernd Henning. “Optimization of Ultrasound Reflecting Mirrors.” In <i>2006 IEEE International Ultrasonics Symposium</i>, 1390–93, 2006.","short":"C. Unverzagt, J. Rautenberg, R. Kehl, B. Henning, in: 2006 IEEE International Ultrasonics Symposium, 2006, pp. 1390–1393.","ieee":"C. Unverzagt, J. Rautenberg, R. Kehl, and B. Henning, “Optimization of ultrasound reflecting mirrors,” in <i>2006 IEEE International Ultrasonics Symposium</i>, 2006, pp. 1390–1393.","apa":"Unverzagt, C., Rautenberg, J., Kehl, R., &#38; Henning, B. (2006). Optimization of ultrasound reflecting mirrors. In <i>2006 IEEE International Ultrasonics Symposium</i> (pp. 1390–1393)."},"publication":"2006 IEEE International Ultrasonics Symposium","abstract":[{"lang":"eng","text":"In many different ultrasound applications mirrors are often used to deflect ultrasonic waves. The dimensions of the mirror and the applied materials have an essential influence on the output signal characteristics and the obtained measuring quantities. The extension of mirror geometry is not necessarily associated with a higher reflection coefficient. This can be explained with the aid of coincidence condition. A second criterion aims at the avoidance of the mirror resonance. This two conditions lead to an optimal dimensioning of mirror geometry with given material properties and operation mode, as exemplified for a rectangular mirror."}],"_id":"15350","language":[{"iso":"eng"}],"page":"1390-1393","user_id":"15911","author":[{"first_name":"Carsten","last_name":"Unverzagt","full_name":"Unverzagt, Carsten"},{"first_name":"Jens","last_name":"Rautenberg","full_name":"Rautenberg, Jens"},{"full_name":"Kehl, Romina","first_name":"Romina","last_name":"Kehl"},{"first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd","id":"213"}],"title":"Optimization of ultrasound reflecting mirrors","year":"2006","status":"public","date_updated":"2022-01-06T06:52:21Z"},{"user_id":"15911","_id":"15351","language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:52:21Z","title":"Investigation of colour phenomena in condensed water droplets","year":"2006","status":"public","conference":{"location":"Nürenberg","name":" OPTO & IRS² 2006 Conference","start_date":"30.05.2006","end_date":"01.06.2006"},"author":[{"full_name":"Wetzlar, Dietmar","first_name":"Dietmar","last_name":"Wetzlar"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"},{"first_name":"Sascha","last_name":"Nolte","full_name":"Nolte, Sascha"},{"full_name":"Klahold, Jens","last_name":"Klahold","first_name":"Jens"}],"publication_identifier":{"isbn":["978-3-9810993-0-0"]},"type":"conference","department":[{"_id":"49"}],"date_created":"2019-12-17T15:35:59Z","abstract":[{"text":"Today's automotive headlights are built with transparent cover lenses. Therefore condensation of water leads to a visible optical defect. This paper presents a new approach for determination of the droplet size using colour phenomena in totally reflected light. It is based on a model of the generation of colour patterns by interference of several rays of light each multiple totally reflected inside condensed droplets. The droplet size may be determined by the colour if the contact angle is known. Measurement of both droplet size and colour all","lang":"eng"}],"citation":{"apa":"Wetzlar, D., Henning, B., Nolte, S., &#38; Klahold, J. (2006). Investigation of colour phenomena in condensed water droplets. Presented at the  OPTO &#38; IRS<sup>2</sup> 2006 Conference, Nürenberg.","ieee":"D. Wetzlar, B. Henning, S. Nolte, and J. Klahold, “Investigation of colour phenomena in condensed water droplets,” presented at the  OPTO &#38; IRS<sup>2</sup> 2006 Conference, Nürenberg, 2006.","chicago":"Wetzlar, Dietmar, Bernd Henning, Sascha Nolte, and Jens Klahold. “Investigation of Colour Phenomena in Condensed Water Droplets,” 2006.","short":"D. Wetzlar, B. Henning, S. Nolte, J. Klahold, in: 2006.","mla":"Wetzlar, Dietmar, et al. <i>Investigation of Colour Phenomena in Condensed Water Droplets</i>. 2006.","ama":"Wetzlar D, Henning B, Nolte S, Klahold J. Investigation of colour phenomena in condensed water droplets. In: ; 2006.","bibtex":"@inproceedings{Wetzlar_Henning_Nolte_Klahold_2006, title={Investigation of colour phenomena in condensed water droplets}, author={Wetzlar, Dietmar and Henning, Bernd and Nolte, Sascha and Klahold, Jens}, year={2006} }"}},{"publication":"Ultrasonics","issue":"44","citation":{"apa":"Henning, B., &#38; Rautenberg, J. (2006). Process monitoring using ultrasonic sensor systems. <i>Ultrasonics</i>, (44), e1395–e1399.","ieee":"B. Henning and J. Rautenberg, “Process monitoring using ultrasonic sensor systems,” <i>Ultrasonics</i>, no. 44, pp. e1395–e1399, 2006.","short":"B. Henning, J. Rautenberg, Ultrasonics (2006) e1395–e1399.","chicago":"Henning, Bernd, and Jens Rautenberg. “Process Monitoring Using Ultrasonic Sensor Systems.” <i>Ultrasonics</i>, no. 44 (2006): e1395–99.","mla":"Henning, Bernd, and Jens Rautenberg. “Process Monitoring Using Ultrasonic Sensor Systems.” <i>Ultrasonics</i>, no. 44, 2006, pp. e1395–99.","ama":"Henning B, Rautenberg J. Process monitoring using ultrasonic sensor systems. <i>Ultrasonics</i>. 2006;(44):e1395-e1399.","bibtex":"@article{Henning_Rautenberg_2006, title={Process monitoring using ultrasonic sensor systems}, number={44}, journal={Ultrasonics}, author={Henning, Bernd and Rautenberg, Jens}, year={2006}, pages={e1395–e1399} }"},"type":"journal_article","department":[{"_id":"49"}],"date_created":"2019-12-17T15:44:52Z","date_updated":"2022-01-06T06:52:21Z","status":"public","year":"2006","title":"Process monitoring using ultrasonic sensor systems","author":[{"id":"213","full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"},{"last_name":"Rautenberg","first_name":"Jens","full_name":"Rautenberg, Jens"}],"user_id":"15911","page":"e1395-e1399","language":[{"iso":"eng"}],"_id":"15357"},{"citation":{"mla":"Henning, Bernd, and Jens Rautenberg. “Process Monitoring Using Ultrasonic Sensor Systems.” <i>Ultrasonics</i>, no. 44, 2006, pp. e1395–99.","ama":"Henning B, Rautenberg J. Process monitoring using ultrasonic sensor systems. <i>Ultrasonics</i>. 2006;(44):e1395-e1399.","bibtex":"@article{Henning_Rautenberg_2006, title={Process monitoring using ultrasonic sensor systems}, number={44}, journal={Ultrasonics}, author={Henning, Bernd and Rautenberg, Jens}, year={2006}, pages={e1395–e1399} }","apa":"Henning, B., &#38; Rautenberg, J. (2006). Process monitoring using ultrasonic sensor systems. <i>Ultrasonics</i>, <i>44</i>, e1395–e1399.","ieee":"B. Henning and J. Rautenberg, “Process monitoring using ultrasonic sensor systems,” <i>Ultrasonics</i>, no. 44, pp. e1395–e1399, 2006.","chicago":"Henning, Bernd, and Jens Rautenberg. “Process Monitoring Using Ultrasonic Sensor Systems.” <i>Ultrasonics</i>, no. 44 (2006): e1395–99.","short":"B. Henning, J. Rautenberg, Ultrasonics (2006) e1395–e1399."},"issue":"44","publication":"Ultrasonics","department":[{"_id":"49"}],"type":"journal_article","date_created":"2019-12-17T14:29:21Z","date_updated":"2026-02-25T14:08:09Z","author":[{"id":"213","full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"},{"last_name":"Rautenberg","first_name":"Jens","full_name":"Rautenberg, Jens"}],"year":"2006","status":"public","title":"Process monitoring using ultrasonic sensor systems","user_id":"15911","language":[{"iso":"eng"}],"_id":"15346","page":"e1395-e1399"},{"date_created":"2019-12-17T15:37:43Z","department":[{"_id":"49"}],"type":"misc","citation":{"apa":"Gulsch, M., &#38; Henning, B. (2005). <i>Bestimmung des Anteils ungelöster Gase in flüssigen Medien</i>.","mla":"Gulsch, Michael, and Bernd Henning. <i>Bestimmung Des Anteils Ungelöster Gase in Flüssigen Medien</i>. 2005.","ieee":"M. Gulsch and B. Henning, <i>Bestimmung des Anteils ungelöster Gase in flüssigen Medien</i>. 2005.","chicago":"Gulsch, Michael, and Bernd Henning. <i>Bestimmung Des Anteils Ungelöster Gase in Flüssigen Medien</i>, 2005.","short":"M. Gulsch, B. Henning, Bestimmung Des Anteils Ungelöster Gase in Flüssigen Medien, 2005.","ama":"Gulsch M, Henning B. <i>Bestimmung Des Anteils Ungelöster Gase in Flüssigen Medien</i>.; 2005.","bibtex":"@book{Gulsch_Henning_2005, title={Bestimmung des Anteils ungelöster Gase in flüssigen Medien}, author={Gulsch, Michael and Henning, Bernd}, year={2005} }"},"abstract":[{"text":"Impulsbasierte Ultraschallsensorsysteme zur Messung von Füllstand, Durchfluss und Konzentration sind heutzutage aufgrund ihrer Robustheit und Wartungsfreundlichkeit weit verbreitet. Probleme treten immer dann auf, wenn sich Gasblasen im Medium befinden. Diese verändern das empfangene Signal derart, dass eine exakte Messung der Schallgeschwindigkeit des flüssigen Mediums nicht mehr möglich ist. Dieser Beitrag behandelt eine neue Art der Signalauswertung, die eine zuverlässige Bestimmung der Schallgeschwindigkeit auch in diesem Fall gewährleistet. Darüber hinaus können auch Rückschlüsse auf den Gasanteil innerhalb des flüssigen Mediums gewonnen werden.","lang":"eng"}],"language":[{"iso":"eng"}],"_id":"15352","user_id":"15911","author":[{"full_name":"Gulsch, Michael","last_name":"Gulsch","first_name":"Michael"},{"last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd","id":"213"}],"title":"Bestimmung des Anteils ungelöster Gase in flüssigen Medien","year":"2005","status":"public","date_updated":"2022-01-06T06:52:21Z"},{"_id":"15353","language":[{"iso":"eng"}],"page":"780-782","user_id":"15911","author":[{"first_name":"Michael","last_name":"Gulsch","full_name":"Gulsch, Michael"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"year":"2005","status":"public","title":"Bubble detection and gas volume measurement in bubble loaded liquids with pulse driven measurement devices","date_updated":"2022-01-06T06:52:21Z","date_created":"2019-12-17T15:39:19Z","department":[{"_id":"49"}],"type":"conference","citation":{"short":"M. Gulsch, B. Henning, in: 2005 IEEE Ultrasonics Symposium, 2005, pp. 780–782.","chicago":"Gulsch, Michael, and Bernd Henning. “Bubble Detection and Gas Volume Measurement in Bubble Loaded Liquids with Pulse Driven Measurement Devices.” In <i>2005 IEEE Ultrasonics Symposium</i>, 780–82, 2005.","ieee":"M. Gulsch and B. Henning, “Bubble detection and gas volume measurement in bubble loaded liquids with pulse driven measurement devices,” in <i>2005 IEEE Ultrasonics Symposium</i>, 2005, pp. 780–782.","apa":"Gulsch, M., &#38; Henning, B. (2005). Bubble detection and gas volume measurement in bubble loaded liquids with pulse driven measurement devices. In <i>2005 IEEE Ultrasonics Symposium</i> (pp. 780–782).","bibtex":"@inproceedings{Gulsch_Henning_2005, title={Bubble detection and gas volume measurement in bubble loaded liquids with pulse driven measurement devices}, booktitle={2005 IEEE Ultrasonics Symposium}, author={Gulsch, Michael and Henning, Bernd}, year={2005}, pages={780–782} }","ama":"Gulsch M, Henning B. Bubble detection and gas volume measurement in bubble loaded liquids with pulse driven measurement devices. In: <i>2005 IEEE Ultrasonics Symposium</i>. ; 2005:780-782.","mla":"Gulsch, Michael, and Bernd Henning. “Bubble Detection and Gas Volume Measurement in Bubble Loaded Liquids with Pulse Driven Measurement Devices.” <i>2005 IEEE Ultrasonics Symposium</i>, 2005, pp. 780–82."},"publication":"2005 IEEE Ultrasonics Symposium","abstract":[{"lang":"eng","text":"Currently there are pulse based ultrasonic sensor systems used to measure flow, liquid level, concentration or in process monitoring. In several processes the investigated media are a mixture of liquid and solid ingredients (emulsions, suspensions). The use of ultrasonic sensor systems will be very complicated if gas bubbles appear at the measurement place caused by chemical reactions, high temperature or fast flow that means by typical process conditions. Firstly, the appearance of gas bubbles falsifies the measured absorption. Secondly, the measured velocity is influenced by gas bubbles. In figure 1 is visible that a volume fraction of 0.1 ppm of undissolved air decreases the sound velocity by 1.4 m s-1"}]},{"date_updated":"2022-01-06T06:52:21Z","author":[{"first_name":"Michael","last_name":"Gulsch","full_name":"Gulsch, Michael"},{"id":"213","full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd"}],"publication_identifier":{"isbn":["3-9808659-1-6"]},"status":"public","title":"Gasvolumenmessung in blasenbeladenen Flüssigkeiten","year":"2005","editor":[{"last_name":"Fastl","first_name":"Hugo","full_name":"Fastl, Hugo"},{"first_name":"Markus","last_name":"Fruhmann","full_name":"Fruhmann, Markus"}],"user_id":"15911","language":[{"iso":"eng"}],"_id":"15354","publisher":"Deutsche Gesellsch. f. Akustik","page":"587-588","abstract":[{"lang":"eng","text":"In vielen verfahrenstechnischen Prozessen ist die kontinuierliche Regelung von Prozessgrößen für einen stabilen und sicheren Betrieb eine wichtige Vorraussetzung. Die Erfassung der Zielgrößen geschieht aufgrund von hoher Robustheit und Wartungsfreundlichkeit zunehmend mit akustischen Messverfahren. Besonders impulsbasierte Messsysteme werden häufig zur Messung von Durchfluss, Füllstand und in der Flüssigkeitsanalytik auch zur Konzentrationsmessung benutzt. Dabei führen am Messort auftretende Gasblasen zu großen messtechnischen Problemen. Sie verändern die gemessenen akustischen Stoffkenngrößen, wodurch es zur fehlerhaften Regelung bestimmter Prozesszielgrößen kommt."}],"citation":{"apa":"Gulsch, M., &#38; Henning, B. (2005). Gasvolumenmessung in blasenbeladenen Flüssigkeiten. In H. Fastl &#38; M. Fruhmann (Eds.), <i>Fortschritte der Akustik - DAGA ’05</i> (pp. 587–588). Berlin: Deutsche Gesellsch. f. Akustik.","ieee":"M. Gulsch and B. Henning, “Gasvolumenmessung in blasenbeladenen Flüssigkeiten,” in <i>Fortschritte der Akustik - DAGA ’05</i>, 2005, pp. 587–588.","short":"M. Gulsch, B. Henning, in: H. Fastl, M. Fruhmann (Eds.), Fortschritte Der Akustik - DAGA ’05, Deutsche Gesellsch. f. Akustik, Berlin, 2005, pp. 587–588.","chicago":"Gulsch, Michael, and Bernd Henning. “Gasvolumenmessung in Blasenbeladenen Flüssigkeiten.” In <i>Fortschritte Der Akustik - DAGA ’05</i>, edited by Hugo Fastl and Markus Fruhmann, 587–88. Berlin: Deutsche Gesellsch. f. Akustik, 2005.","mla":"Gulsch, Michael, and Bernd Henning. “Gasvolumenmessung in Blasenbeladenen Flüssigkeiten.” <i>Fortschritte Der Akustik - DAGA ’05</i>, edited by Hugo Fastl and Markus Fruhmann, Deutsche Gesellsch. f. Akustik, 2005, pp. 587–88.","ama":"Gulsch M, Henning B. Gasvolumenmessung in blasenbeladenen Flüssigkeiten. In: Fastl H, Fruhmann M, eds. <i>Fortschritte Der Akustik - DAGA ’05</i>. Berlin: Deutsche Gesellsch. f. Akustik; 2005:587-588.","bibtex":"@inproceedings{Gulsch_Henning_2005, place={Berlin}, title={Gasvolumenmessung in blasenbeladenen Flüssigkeiten}, booktitle={Fortschritte der Akustik - DAGA ’05}, publisher={Deutsche Gesellsch. f. Akustik}, author={Gulsch, Michael and Henning, Bernd}, editor={Fastl, Hugo and Fruhmann, MarkusEditors}, year={2005}, pages={587–588} }"},"publication":"Fortschritte der Akustik - DAGA '05","department":[{"_id":"49"}],"type":"conference","place":"Berlin","date_created":"2019-12-17T15:40:10Z"},{"page":"455-460","_id":"15355","language":[{"iso":"eng"}],"user_id":"15911","title":"Visualisation and Measurement of Condensed Water in Automobile Headlights","status":"public","year":"2005","conference":{"location":"Nürnberg","name":"Sensor/Test 2005","start_date":"09.05.2005","end_date":"11.05.2005"},"author":[{"last_name":"Gulsch","first_name":"Michael","full_name":"Gulsch, Michael"},{"full_name":"Unverzagt, Carsten","first_name":"Carsten","last_name":"Unverzagt"},{"id":"213","first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd"},{"last_name":"Nolte","first_name":"Sascha","full_name":"Nolte, Sascha"}],"date_updated":"2022-01-06T06:52:21Z","date_created":"2019-12-17T15:41:19Z","type":"conference","department":[{"_id":"49"}],"citation":{"apa":"Gulsch, M., Unverzagt, C., Henning, B., &#38; Nolte, S. (2005). Visualisation and Measurement of Condensed Water in Automobile Headlights (pp. 455–460). Presented at the Sensor/Test 2005, Nürnberg.","ieee":"M. Gulsch, C. Unverzagt, B. Henning, and S. Nolte, “Visualisation and Measurement of Condensed Water in Automobile Headlights,” presented at the Sensor/Test 2005, Nürnberg, 2005, pp. 455–460.","short":"M. Gulsch, C. Unverzagt, B. Henning, S. Nolte, in: 2005, pp. 455–460.","chicago":"Gulsch, Michael, Carsten Unverzagt, Bernd Henning, and Sascha Nolte. “Visualisation and Measurement of Condensed Water in Automobile Headlights,” 455–60, 2005.","mla":"Gulsch, Michael, et al. <i>Visualisation and Measurement of Condensed Water in Automobile Headlights</i>. 2005, pp. 455–60.","ama":"Gulsch M, Unverzagt C, Henning B, Nolte S. Visualisation and Measurement of Condensed Water in Automobile Headlights. In: ; 2005:455-460.","bibtex":"@inproceedings{Gulsch_Unverzagt_Henning_Nolte_2005, title={Visualisation and Measurement of Condensed Water in Automobile Headlights}, author={Gulsch, Michael and Unverzagt, Carsten and Henning, Bernd and Nolte, Sascha}, year={2005}, pages={455–460} }"},"abstract":[{"text":"Today headlights are built with transparent polycarbonate front windows. If the air moisture inside the headlight is high and the outside temperature decreases below the dew-point, the air moisture condensates inside and the inner surface of the polycarbonate front window (PCFW) becomes nontransparent (figure 1). To the costumer this appears as an optical defect.In order to avoid the condensation and to speed up the evaporation of the condensed water (condensate) on the PCFW a Computational-Fluid-Dynamic-simulation is used. The simulation results are proceeded to optimise the airflow and the arrangement of the breather holes. An important problem is the validation of the simulated results with the reality. It was necessary to build a non-invasive measurement system for the continuous characterisation of condensated areas without affecting the material properties, the airflow and the light distribution inside the headlight.","lang":"eng"}]},{"issue":"9","publication":"IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control","citation":{"ieee":"P. Handel, A. Tournier, and B. Henning, “Quantum 1/f Effect in Resonant Biochemical Piezoelectric and MEMS Sensors,” <i>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control</i>, vol. 52, no. 9, pp. 1461–1467, 2005.","apa":"Handel, P., Tournier, A., &#38; Henning, B. (2005). Quantum 1/f Effect in Resonant Biochemical Piezoelectric and MEMS Sensors. <i>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control</i>, <i>52</i>(9), 1461–1467.","chicago":"Handel, Peter, Adam Tournier, and Bernd Henning. “Quantum 1/f Effect in Resonant Biochemical Piezoelectric and MEMS Sensors.” <i>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control</i> 52, no. 9 (2005): 1461–67.","short":"P. Handel, A. Tournier, B. Henning, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 52 (2005) 1461–1467.","mla":"Handel, Peter, et al. “Quantum 1/f Effect in Resonant Biochemical Piezoelectric and MEMS Sensors.” <i>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control</i>, vol. 52, no. 9, 2005, pp. 1461–67.","bibtex":"@article{Handel_Tournier_Henning_2005, title={Quantum 1/f Effect in Resonant Biochemical Piezoelectric and MEMS Sensors}, volume={52}, number={9}, journal={IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control}, author={Handel, Peter and Tournier, Adam and Henning, Bernd}, year={2005}, pages={1461–1467} }","ama":"Handel P, Tournier A, Henning B. Quantum 1/f Effect in Resonant Biochemical Piezoelectric and MEMS Sensors. <i>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control</i>. 2005;52(9):1461-1467."},"type":"journal_article","department":[{"_id":"49"}],"date_created":"2019-12-17T15:44:02Z","date_updated":"2022-01-06T06:52:21Z","intvolume":"        52","title":"Quantum 1/f Effect in Resonant Biochemical Piezoelectric and MEMS Sensors","status":"public","year":"2005","author":[{"full_name":"Handel, Peter","last_name":"Handel","first_name":"Peter"},{"full_name":"Tournier, Adam","last_name":"Tournier","first_name":"Adam"},{"first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd","id":"213"}],"user_id":"15911","volume":52,"page":"1461-1467","language":[{"iso":"eng"}],"_id":"15356"},{"abstract":[{"lang":"eng","text":"In the 1950's many investigations have been made in measuring the Young's and the shear modus of isotropic materials with acoustic waves. Therefore both the longitudinal and transversal sound velocities have been determined with only one specimen, that had to be large in comparison to the wavelength (Brown, Reynolds, Dunegan). Therewith the method was suited only for low absorbing materials. In the 1990's further developments led to mono mode rods to describe viscoelastic properties. Their diameters had to be very small for high frequencies, thus giving practical values up to 65 kHz (Benatar). This contribution is about a tubular multi mode specimen and its application for the simultaneous measurement of the abovementioned acoustic properties at high frequencies."}],"citation":{"bibtex":"@inproceedings{Rautenberg_Henning_2005, title={Acoustic properties of highly attenuating isotropic media}, author={Rautenberg, Jens and Henning, Bernd}, year={2005} }","short":"J. Rautenberg, B. Henning, in: 2005.","ama":"Rautenberg J, Henning B. Acoustic properties of highly attenuating isotropic media. In: ; 2005.","chicago":"Rautenberg, Jens, and Bernd Henning. “Acoustic Properties of Highly Attenuating Isotropic Media,” 2005.","ieee":"J. Rautenberg and B. Henning, “Acoustic properties of highly attenuating isotropic media,” presented at the 6th World Congress on Ultrasonics (WCU 2005), Beijing, China, 2005.","apa":"Rautenberg, J., &#38; Henning, B. (2005). Acoustic properties of highly attenuating isotropic media. Presented at the 6th World Congress on Ultrasonics (WCU 2005), Beijing, China.","mla":"Rautenberg, Jens, and Bernd Henning. <i>Acoustic Properties of Highly Attenuating Isotropic Media</i>. 2005."},"department":[{"_id":"49"}],"type":"conference","date_created":"2019-12-17T15:45:54Z","date_updated":"2022-01-06T06:52:21Z","conference":{"location":"Beijing, China","name":"6th World Congress on Ultrasonics (WCU 2005)","start_date":"28.08.2005","end_date":"09.09.2005"},"author":[{"first_name":"Jens","last_name":"Rautenberg","full_name":"Rautenberg, Jens"},{"first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd","id":"213"}],"title":"Acoustic properties of highly attenuating isotropic media","status":"public","year":"2005","user_id":"15911","language":[{"iso":"eng"}],"_id":"15358"},{"type":"conference","department":[{"_id":"49"}],"place":"Berlin","date_created":"2019-12-17T15:46:48Z","abstract":[{"text":"In den bekannten grundlegenden Ausf¨uhrungen zur Erzeugung hörbaren Schalls durch Eigendemodulation amplitudenmodulierten\r\nLeistungsultraschalls (siehe u.a. Westervelt, Berktay) wird von zwei räumlich übereinander\r\nliegenden Wellen unterschiedlicher Frequenz im nichtlinearen Medium ausgegangen, so dass neben ihren\r\nHarmonischen auch Summen- und Differenzfrequenzen entstehen. Die perfekte räumliche Ueberdeckung\r\nder Wellen im Freifeld kann mit herkömmlichen Schallwandlern allerdings nur unzul¨anglich erreicht werden.\r\nTrotzdem sind in der Vergangenheit einige so genannte parametrische Lautsprecher entwickelt worden. Um\r\nannähernd die erwähnten Voraussetzungen zu gewährleisten, sind gängige Systeme mit einem Durchmesser\r\nvon ca. 30 cm relativ groß. Dies soll auch dem angestrebten Sekundärschalldruck Rechnung tragen, der linear\r\nmit der effektiv abstrahlenden Fl¨ache wächst. Zum Aufbau dieser großen Flächen werden teilweise viele\r\nkleine Ultraschallwandler zu einem Array zusammengesetzt. Der hohe Preis einzelner Wandler aber auch\r\ndie notwendige Sortierung beispielsweise bezüglich ihrer Mittenfrequenz macht den Aufbau solcher Systeme\r\naufwändig. Erst am vollständig aufgebauten Array werden schließlich Frequenzgang und Richtcharakteristik\r\ndes Sekundärschalls ermittelt. Im Sinne kürzerer Entwicklungszeiten und -kosten wäre es wünschenswert,\r\nbereits vor dem Aufbau des Arrays allein durch Untersuchung des einzelnen Ultraschallwandlers eine Prognose\r\nüber die zu erwartenden Eigenschaften des Gesamtsystems vornehmen zu können. In diesem Beitrag\r\nwird ein Versuchsaufbau vorgestellt, der unter strenger Beachtung der anfangs erwähnten Voraussetzungen\r\ndie parametrische Schallerzeugung mit nur einem Ultraschallwandler kleiner Baugröße erlaubt. Die Frequenzg\r\nänge des Sekundärschalls von Einzelelement und Array werden bei entsprechender Distanz gegen¨ubergestellt.\r\nVorzüge des neuen Messaufbaus, beispielsweise die Möglichkeit zur Variation von Druck, Temperatur\r\noder Luftfeuchtigkeit, um atmosphärische Einflüsse auf die parametrische Schallerzeugung zu untersuchen,\r\nwerden skizziert","lang":"eng"}],"publication":"Fortschritte der Akustik - DAGA '05","citation":{"apa":"Rautenberg, J., &#38; Henning, B. (2005). Charakterisierung einzelner Ultraschallwandler für den Aufbau eines mehrelementigen parametrischen Lautsprechers. In H. Fastl &#38; M. Fruhmann (Eds.), <i>Fortschritte der Akustik - DAGA ’05</i> (pp. 491–492). Berlin: Deutsche Gesellsch. f. Akustik.","mla":"Rautenberg, Jens, and Bernd Henning. “Charakterisierung Einzelner Ultraschallwandler Für Den Aufbau Eines Mehrelementigen Parametrischen Lautsprechers.” <i>Fortschritte Der Akustik - DAGA ’05</i>, edited by Hugo Fastl and Markus Fruhmann, Deutsche Gesellsch. f. Akustik, 2005, pp. 491–92.","ieee":"J. Rautenberg and B. Henning, “Charakterisierung einzelner Ultraschallwandler für den Aufbau eines mehrelementigen parametrischen Lautsprechers,” in <i>Fortschritte der Akustik - DAGA ’05</i>, 2005, pp. 491–492.","ama":"Rautenberg J, Henning B. Charakterisierung einzelner Ultraschallwandler für den Aufbau eines mehrelementigen parametrischen Lautsprechers. In: Fastl H, Fruhmann M, eds. <i>Fortschritte Der Akustik - DAGA ’05</i>. Berlin: Deutsche Gesellsch. f. Akustik; 2005:491-492.","short":"J. Rautenberg, B. Henning, in: H. Fastl, M. Fruhmann (Eds.), Fortschritte Der Akustik - DAGA ’05, Deutsche Gesellsch. f. Akustik, Berlin, 2005, pp. 491–492.","chicago":"Rautenberg, Jens, and Bernd Henning. “Charakterisierung Einzelner Ultraschallwandler Für Den Aufbau Eines Mehrelementigen Parametrischen Lautsprechers.” In <i>Fortschritte Der Akustik - DAGA ’05</i>, edited by Hugo Fastl and Markus Fruhmann, 491–92. Berlin: Deutsche Gesellsch. f. Akustik, 2005.","bibtex":"@inproceedings{Rautenberg_Henning_2005, place={Berlin}, title={Charakterisierung einzelner Ultraschallwandler für den Aufbau eines mehrelementigen parametrischen Lautsprechers}, booktitle={Fortschritte der Akustik - DAGA ’05}, publisher={Deutsche Gesellsch. f. Akustik}, author={Rautenberg, Jens and Henning, Bernd}, editor={Fastl, Hugo and Fruhmann, MarkusEditors}, year={2005}, pages={491–492} }"},"user_id":"15911","editor":[{"full_name":"Fastl, Hugo","first_name":"Hugo","last_name":"Fastl"},{"first_name":"Markus","last_name":"Fruhmann","full_name":"Fruhmann, Markus"}],"page":"491-492","_id":"15359","publisher":"Deutsche Gesellsch. f. Akustik","language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:52:21Z","title":"Charakterisierung einzelner Ultraschallwandler für den Aufbau eines mehrelementigen parametrischen Lautsprechers","status":"public","year":"2005","publication_identifier":{"isbn":["3-9808659-1-6"]},"author":[{"first_name":"Jens","last_name":"Rautenberg","full_name":"Rautenberg, Jens"},{"last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd","id":"213"}]}]