---
_id: '15324'
author:
- first_name: Bernd
  full_name: Henning, Bernd
  last_name: Henning
citation:
  ama: 'Henning B. Editorial: XXI. Messtechnisches Symposium des Arbeitskreises der
    Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007. <i>Technisches
    Messen</i>. 2008;(4):217-220.'
  apa: 'Henning, B. (2008). Editorial: XXI. Messtechnisches Symposium des Arbeitskreises
    der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007. <i>Technisches
    Messen</i>, (4), 217–220.'
  bibtex: '@article{Henning_2008, title={Editorial: XXI. Messtechnisches Symposium
    des Arbeitskreises der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007},
    number={4}, journal={Technisches Messen}, author={Henning, Bernd}, year={2008},
    pages={217–220} }'
  chicago: 'Henning, Bernd. “Editorial: XXI. Messtechnisches Symposium Des Arbeitskreises
    Der Hochschullehrer Für Messtechnik (AHMT), Paderborn, 20.--22.09.2007.” <i>Technisches
    Messen</i>, no. 4 (2008): 217–20.'
  ieee: 'B. Henning, “Editorial: XXI. Messtechnisches Symposium des Arbeitskreises
    der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007,” <i>Technisches
    Messen</i>, no. 4, pp. 217–220, 2008.'
  mla: 'Henning, Bernd. “Editorial: XXI. Messtechnisches Symposium Des Arbeitskreises
    Der Hochschullehrer Für Messtechnik (AHMT), Paderborn, 20.--22.09.2007.” <i>Technisches
    Messen</i>, no. 4, 2008, pp. 217–20.'
  short: B. Henning, Technisches Messen (2008) 217–220.
date_created: 2019-12-13T10:38:13Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
issue: '4'
language:
- iso: eng
page: 217-220
publication: Technisches Messen
status: public
title: 'Editorial: XXI. Messtechnisches Symposium des Arbeitskreises der Hochschullehrer
  für Messtechnik (AHMT), Paderborn, 20.--22.09.2007'
type: journal_article
user_id: '15911'
year: '2008'
...
---
_id: '15325'
author:
- first_name: Bernd
  full_name: Henning, Bernd
  last_name: Henning
citation:
  ama: Henning B. Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums
    sowie Ultraschallzähler. 2008.
  apa: Henning, B. (2008). Verfahren zur Bestimmung einer Eigenschaft eines strömenden
    Mediums sowie Ultraschallzähler.
  bibtex: '@article{Henning_2008, title={Verfahren zur Bestimmung einer Eigenschaft
    eines strömenden Mediums sowie Ultraschallzähler}, author={Henning, Bernd}, year={2008}
    }'
  chicago: Henning, Bernd. “Verfahren Zur Bestimmung Einer Eigenschaft Eines Strömenden
    Mediums Sowie Ultraschallzähler,” 2008.
  ieee: B. Henning, “Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums
    sowie Ultraschallzähler.” 2008.
  mla: Henning, Bernd. <i>Verfahren Zur Bestimmung Einer Eigenschaft Eines Strömenden
    Mediums Sowie Ultraschallzähler</i>. 2008.
  short: B. Henning, (2008).
date_created: 2019-12-13T10:39:32Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
ipc: B25J 7/00
ipn: DE105007020491
publication_date: '2008'
status: public
title: Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums sowie Ultraschallzähler
type: patent
user_id: '15911'
year: '2008'
...
---
_id: '15326'
abstract:
- lang: eng
  text: In this contribution it is shown that the modal components of the received
    signal at the end of an acoustic waveguide can be suppressed or intensified if
    the two electrodes of a piezo-electric ceramic are shaped in a special way. With
    this it is possible to measure different signals which can be used to differ between
    the liquids dissipation and the signal attenuation caused by the waveguide geometry
    as well as impedance conditions. With the help of the principal component analysis
    it should be possible to infer the modal amplitudes from the received signals
    of one ultrasonic transducer and to calculate the acoustic impedance of the liquid
    that is included in the wave guide.
author:
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  last_name: Henning
citation:
  ama: 'Rautenberg J, Henning B. Separation und Bewertung verschiedener Moden der
    Schallausbreitung im akustischen Wellenleiter. In: ; 2008.'
  apa: Rautenberg, J., &#38; Henning, B. (2008). Separation und Bewertung verschiedener
    Moden der Schallausbreitung im akustischen Wellenleiter.
  bibtex: '@inproceedings{Rautenberg_Henning_2008, title={Separation und Bewertung
    verschiedener Moden der Schallausbreitung im akustischen Wellenleiter}, author={Rautenberg,
    Jens and Henning, Bernd}, year={2008} }'
  chicago: Rautenberg, Jens, and Bernd Henning. “Separation Und Bewertung Verschiedener
    Moden Der Schallausbreitung Im Akustischen Wellenleiter,” 2008.
  ieee: J. Rautenberg and B. Henning, “Separation und Bewertung verschiedener Moden
    der Schallausbreitung im akustischen Wellenleiter,” 2008.
  mla: Rautenberg, Jens, and Bernd Henning. <i>Separation Und Bewertung Verschiedener
    Moden Der Schallausbreitung Im Akustischen Wellenleiter</i>. 2008.
  short: 'J. Rautenberg, B. Henning, in: 2008.'
date_created: 2019-12-13T10:42:56Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
publication_identifier:
  isbn:
  - 978-3-18-092011-5
status: public
title: Separation und Bewertung verschiedener Moden der Schallausbreitung im akustischen
  Wellenleiter
type: conference
user_id: '15911'
year: '2008'
...
---
_id: '15327'
abstract:
- lang: eng
  text: This contribution is about different types of sonagram processing and their
    application for the simultaneous direct and indirect measurement of both the longitudinal
    and the transversal ultrasound velocities of highly absorbing isotropic synthetic
    polymers. Therefore, the pulse transmission of an initially longitudinal wave
    through a hollow cylindrical specimen is investigated experimentally and theoretically.
author:
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: 'Rautenberg J, Henning B. Simultaneous direct and indirect measurement of sound
    velocities. In: ; 2008:148-151.'
  apa: Rautenberg, J., &#38; Henning, B. (2008). Simultaneous direct and indirect
    measurement of sound velocities (pp. 148–151). Presented at the Eurosensors XXII,
    Dresden.
  bibtex: '@inproceedings{Rautenberg_Henning_2008, title={Simultaneous direct and
    indirect measurement of sound velocities}, author={Rautenberg, Jens and Henning,
    Bernd}, year={2008}, pages={148–151} }'
  chicago: Rautenberg, Jens, and Bernd Henning. “Simultaneous Direct and Indirect
    Measurement of Sound Velocities,” 148–51, 2008.
  ieee: J. Rautenberg and B. Henning, “Simultaneous direct and indirect measurement
    of sound velocities,” presented at the Eurosensors XXII, Dresden, 2008, pp. 148–151.
  mla: Rautenberg, Jens, and Bernd Henning. <i>Simultaneous Direct and Indirect Measurement
    of Sound Velocities</i>. 2008, pp. 148–51.
  short: 'J. Rautenberg, B. Henning, in: 2008, pp. 148–151.'
conference:
  end_date: 10.09.2008
  location: Dresden
  name: Eurosensors XXII
  start_date: 07.09.2008
date_created: 2019-12-13T10:43:55Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
page: 148-151
status: public
title: Simultaneous direct and indirect measurement of sound velocities
type: conference
user_id: '15911'
year: '2008'
...
---
_id: '15328'
author:
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Horst
  full_name: Ziegler, Horst
  last_name: Ziegler
- first_name: Ulrich
  full_name: Gaugler, Ulrich
  last_name: Gaugler
- first_name: Gerhard
  full_name: Dietz, Gerhard
  last_name: Dietz
- first_name: Carsten
  full_name: Unverzagt, Carsten
  last_name: Unverzagt
- first_name: Romina
  full_name: Kehl, Romina
  last_name: Kehl
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: Rautenberg J, Ziegler H, Gaugler U, et al. Piezosensor zur Temperaturmessung.
    2008.
  apa: Rautenberg, J., Ziegler, H., Gaugler, U., Dietz, G., Unverzagt, C., Kehl, R.,
    &#38; Henning, B. (2008). Piezosensor zur Temperaturmessung.
  bibtex: '@article{Rautenberg_Ziegler_Gaugler_Dietz_Unverzagt_Kehl_Henning_2008,
    title={Piezosensor zur Temperaturmessung}, author={Rautenberg, Jens and Ziegler,
    Horst and Gaugler, Ulrich and Dietz, Gerhard and Unverzagt, Carsten and Kehl,
    Romina and Henning, Bernd}, year={2008} }'
  chicago: Rautenberg, Jens, Horst Ziegler, Ulrich Gaugler, Gerhard Dietz, Carsten
    Unverzagt, Romina Kehl, and Bernd Henning. “Piezosensor Zur Temperaturmessung,”
    2008.
  ieee: J. Rautenberg <i>et al.</i>, “Piezosensor zur Temperaturmessung.” 2008.
  mla: Rautenberg, Jens, et al. <i>Piezosensor Zur Temperaturmessung</i>. 2008.
  short: J. Rautenberg, H. Ziegler, U. Gaugler, G. Dietz, C. Unverzagt, R. Kehl, B.
    Henning, (2008).
date_created: 2019-12-13T10:45:48Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
ipc: GO1F 1/66
ipn: DE 102007020491 A1
publication_date: '2008'
status: public
title: Piezosensor zur Temperaturmessung
type: patent
user_id: '15911'
year: '2008'
...
---
_id: '15329'
author:
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Horst
  full_name: Ziegler, Horst
  last_name: Ziegler
- first_name: Ulrich
  full_name: Gaugler, Ulrich
  last_name: Gaugler
- first_name: Gerhard
  full_name: Dietz, Gerhard
  last_name: Dietz
- first_name: Carsten
  full_name: Unverzagt, Carsten
  last_name: Unverzagt
- first_name: Romina
  full_name: Kehl, Romina
  last_name: Kehl
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: Rautenberg J, Ziegler H, Gaugler U, et al. Verfahren zur Bestimmung einer Eigenschaft
    eines strömenden Mediums. 2008.
  apa: Rautenberg, J., Ziegler, H., Gaugler, U., Dietz, G., Unverzagt, C., Kehl, R.,
    &#38; Henning, B. (2008). Verfahren zur Bestimmung einer Eigenschaft eines strömenden
    Mediums.
  bibtex: '@article{Rautenberg_Ziegler_Gaugler_Dietz_Unverzagt_Kehl_Henning_2008,
    title={Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums}, author={Rautenberg,
    Jens and Ziegler, Horst and Gaugler, Ulrich and Dietz, Gerhard and Unverzagt,
    Carsten and Kehl, Romina and Henning, Bernd}, year={2008} }'
  chicago: Rautenberg, Jens, Horst Ziegler, Ulrich Gaugler, Gerhard Dietz, Carsten
    Unverzagt, Romina Kehl, and Bernd Henning. “Verfahren Zur Bestimmung Einer Eigenschaft
    Eines Strömenden Mediums,” 2008.
  ieee: J. Rautenberg <i>et al.</i>, “Verfahren zur Bestimmung einer Eigenschaft eines
    strömenden Mediums.” 2008.
  mla: Rautenberg, Jens, et al. <i>Verfahren Zur Bestimmung Einer Eigenschaft Eines
    Strömenden Mediums</i>. 2008.
  short: J. Rautenberg, H. Ziegler, U. Gaugler, G. Dietz, C. Unverzagt, R. Kehl, B.
    Henning, (2008).
date_created: 2019-12-13T10:48:08Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
ipc: G01F 1/66
ipn: EP 1985974 A3
publication_date: '2008'
status: public
title: Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums
type: patent
user_id: '15911'
year: '2008'
...
---
_id: '15243'
author:
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: Henning B. <i>Ultraschall-Messtechnik Und Ultraschall-Tomografie</i>.; 29AD.
  apa: Henning, B. (29AD). <i>Ultraschall-Messtechnik und Ultraschall-Tomografie</i>.
  bibtex: '@book{Henning_29AD, title={Ultraschall-Messtechnik und Ultraschall-Tomografie},
    author={Henning, Bernd}, year={29AD} }'
  chicago: Henning, Bernd. <i>Ultraschall-Messtechnik Und Ultraschall-Tomografie</i>,
    29AD.
  ieee: B. Henning, <i>Ultraschall-Messtechnik und Ultraschall-Tomografie</i>. 29AD.
  mla: Henning, Bernd. <i>Ultraschall-Messtechnik Und Ultraschall-Tomografie</i>.
    29AD.
  short: B. Henning, Ultraschall-Messtechnik Und Ultraschall-Tomografie, 29AD.
date_created: 2019-12-04T11:51:03Z
date_updated: 2022-01-06T06:52:19Z
department:
- _id: '49'
language:
- iso: eng
status: public
title: Ultraschall-Messtechnik und Ultraschall-Tomografie
type: misc
user_id: '15911'
year: '2008'
...
---
_id: '15335'
author:
- first_name: Bernd
  full_name: Henning, Bernd
  last_name: Henning
citation:
  ama: Henning B. <i>Liquid Analysis Using Acoustical Sensors</i>.
  apa: Henning, B. (n.d.). <i>Liquid analysis using acoustical sensors</i>.
  bibtex: '@book{Henning, title={Liquid analysis using acoustical sensors}, author={Henning,
    Bernd} }'
  chicago: Henning, Bernd. <i>Liquid Analysis Using Acoustical Sensors</i>, n.d.
  ieee: B. Henning, <i>Liquid analysis using acoustical sensors</i>. .
  mla: Henning, Bernd. <i>Liquid Analysis Using Acoustical Sensors</i>.
  short: B. Henning, Liquid Analysis Using Acoustical Sensors, n.d.
date_created: 2019-12-17T13:16:14Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
status: public
title: Liquid analysis using acoustical sensors
type: misc
user_id: '15911'
year: '2007'
...
---
_id: '15336'
abstract:
- lang: eng
  text: 'Ultraschallsensoren werden heute in der industriellen Messtechnik vielfach
    eingesetzt, zum Beispiel für die Durchflussmessung, Füllstandmessung, Konzentrationsanalyse,
    zerstörungsfreie Werkstoffdiagnostik und anderes mehr. Dabei  wachsen die Anforderungen
    hinsichtlich der zu gewährleistenden Messunsicherheit, der Zuverlässigkeit sowie
    einer erweiterter Funktionalität ständig. Erreichen lassen sich diese Ziele natürlich
    nur mit Hilfe verbesserter Ultraschallsensoren und optimal gestalteter Messanordnungen.
    Die permanente Forderung, die Produktentwicklungszeiten sowie die Produktherstellungskosten
    deutlich zu minimieren, macht den Einsatz moderner Entwicklungswerkzeuge für das
    Sensordesign unumgänglich. '
author:
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: Henning B. <i>Schallfeldsimulation Für Die Ultraschallmesstechnik</i>.; 2007:40-42.
  apa: Henning, B. (2007). <i>Schallfeldsimulation für die Ultraschallmesstechnik</i>
    (pp. 40–42).
  bibtex: '@book{Henning_2007, title={Schallfeldsimulation für die Ultraschallmesstechnik},
    author={Henning, Bernd}, year={2007}, pages={40–42} }'
  chicago: Henning, Bernd. <i>Schallfeldsimulation Für Die Ultraschallmesstechnik</i>,
    2007.
  ieee: B. Henning, <i>Schallfeldsimulation für die Ultraschallmesstechnik</i>. 2007,
    pp. 40–42.
  mla: Henning, Bernd. <i>Schallfeldsimulation Für Die Ultraschallmesstechnik</i>.
    2007, pp. 40–42.
  short: B. Henning, Schallfeldsimulation Für Die Ultraschallmesstechnik, 2007.
date_created: 2019-12-17T13:18:15Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
page: 40-42
status: public
title: Schallfeldsimulation für die Ultraschallmesstechnik
type: misc
user_id: '15911'
year: '2007'
...
---
_id: '15337'
abstract:
- lang: eng
  text: The continuous measurement of rheological properties (density and viscosity)
    or material properties (concentration of selected substances) of liquid mixtures
    in the chemical industry or in the food industry is a great challenge to this
    day. Standard chemical sensors are often not suitable for industrial processes
    because of their slow sensor response and their limited robustness due to the
    direct contact to process media. Ultrasonic sensor systems meet the practical
    requirements of a chemical sensor quite well. Current ultrasonic sensor systems
    are already widely used as acoustic chemical sensors to measure concentration
    of selected substances or to monitor the course of polymerization, crystallization
    or fermentation processes. Useable acoustic properties for the characterization
    of liquid mixtures are sound velocity, sound absorption and acoustic impedance
    in consideration of temperature. This contribution will give a short overview
    of the state of the art and several trends for the use of ultrasonic sensor systems
    in process applications. Currently there are many activities to use acoustic waveguides
    for above mentioned sensor applications. By means of two selected examples (density
    measurement and determination of acoustic properties of highly absorbing synthetic
    polymers) it will presented new developed measurement principles using acoustic
    waveguides.
author:
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
citation:
  ama: 'Henning B, Rautenberg J. Acoustical waveguides for sensor applications. In:
    ; 2007.'
  apa: Henning, B., &#38; Rautenberg, J. (2007). Acoustical waveguides for sensor
    applications. Presented at the International Congress on Ultrasonics (ICU), Wien.
  bibtex: '@inproceedings{Henning_Rautenberg_2007, title={Acoustical waveguides for
    sensor applications}, author={Henning, Bernd and Rautenberg, Jens}, year={2007}
    }'
  chicago: Henning, Bernd, and Jens Rautenberg. “Acoustical Waveguides for Sensor
    Applications,” 2007.
  ieee: B. Henning and J. Rautenberg, “Acoustical waveguides for sensor applications,”
    presented at the International Congress on Ultrasonics (ICU), Wien, 2007.
  mla: Henning, Bernd, and Jens Rautenberg. <i>Acoustical Waveguides for Sensor Applications</i>.
    2007.
  short: 'B. Henning, J. Rautenberg, in: 2007.'
conference:
  end_date: 12.04.2007
  location: Wien
  name: International Congress on Ultrasonics (ICU)
  start_date: 09.04.2007
date_created: 2019-12-17T13:20:39Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
status: public
title: Acoustical waveguides for sensor applications
type: conference
user_id: '15911'
year: '2007'
...
---
_id: '15338'
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'
author:
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: 'Rautenberg J, Henning B. Measurement of the acoustic properties of highly
    absorbing synthetic polymers. In: <i>Proceedings of the International Congress
    on Ultrasonics</i>. ; 2007.'
  apa: Rautenberg, J., &#38; Henning, B. (2007). Measurement of the acoustic properties
    of highly absorbing synthetic polymers. In <i>Proceedings of the International
    Congress on Ultrasonics</i>.
  bibtex: '@inproceedings{Rautenberg_Henning_2007, title={Measurement of the acoustic
    properties of highly absorbing synthetic polymers}, booktitle={Proceedings of
    the International Congress on Ultrasonics}, author={Rautenberg, Jens and Henning,
    Bernd}, year={2007} }'
  chicago: Rautenberg, Jens, and Bernd Henning. “Measurement of the Acoustic Properties
    of Highly Absorbing Synthetic Polymers.” In <i>Proceedings of the International
    Congress on Ultrasonics</i>, 2007.
  ieee: J. Rautenberg and B. Henning, “Measurement of the acoustic properties of highly
    absorbing synthetic polymers,” in <i>Proceedings of the International Congress
    on Ultrasonics</i>, 2007.
  mla: Rautenberg, Jens, and Bernd Henning. “Measurement of the Acoustic Properties
    of Highly Absorbing Synthetic Polymers.” <i>Proceedings of the International Congress
    on Ultrasonics</i>, 2007.
  short: 'J. Rautenberg, B. Henning, in: Proceedings of the International Congress
    on Ultrasonics, 2007.'
date_created: 2019-12-17T13:21:32Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
publication: Proceedings of the International Congress on Ultrasonics
status: public
title: Measurement of the acoustic properties of highly absorbing synthetic polymers
type: conference
user_id: '15911'
year: '2007'
...
---
_id: '15339'
abstract:
- lang: eng
  text: 'Continuous and reliable concentration measurement of liquids still is a great
    challenge as the sensor systems have to meet high industrial requirements. Apart
    from chemical sensors there are a couple of acoustic systems [1] that are well
    suited for a lot of industrial applications. Most of them 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 advantages of acoustic sensors are their robustness and their
    fast response. Their disadvantages are sensitivity against variations of the 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: It has turned out that the principal components of a signal
    at the end of the waveguide can be assigned to the different propagative acoustic
    modes (Fig. 1). Therefore it is necessary to use different simulation tools, e.g.
    FEM and modal analysis (Fig. 2). With this it is possible to determine the amplitudes
    of each mode by means of one measured signal at the end of the waveguide and Gauss
    Algorithm even if the transducer is of very simple kind [2]. Therewith it is possible
    to get redundant information -- one amplitude for each mode -- for the liquid
    impedance. In addition to that it is possible to generate an acoustic reference
    signal without information about the liquid impedance but dissipation if we use
    the fundamental mode. The different signal amplitudes and a model of acoustic
    wave propagation [2, 3] offer the possibility to distinguish between dissipation
    in the liquid and attenuation due to the impedance relations. Moreover, if there
    are enough analysable amplitudes available, variations of the reference material
    properties can be determined.'
author:
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: 'Rautenberg J, Henning B. New approach for the reliable measurement of acoustic
    impedance of liquids in an acoustic waveguide. In: Vol II. ; 2007:87-92.'
  apa: Rautenberg, J., &#38; Henning, B. (2007). New approach for the reliable measurement
    of acoustic impedance of liquids in an acoustic waveguide (Vol. II, pp. 87–92).
    Presented at the 13th International Conference Sensor + Test 2007, Nürnberg.
  bibtex: '@inproceedings{Rautenberg_Henning_2007, title={New approach for the reliable
    measurement of acoustic impedance of liquids in an acoustic waveguide}, volume={II},
    author={Rautenberg, Jens and Henning, Bernd}, year={2007}, pages={87–92} }'
  chicago: Rautenberg, Jens, and Bernd Henning. “New Approach for the Reliable Measurement
    of Acoustic Impedance of Liquids in an Acoustic Waveguide,” II:87–92, 2007.
  ieee: J. Rautenberg and B. Henning, “New approach for the reliable measurement of
    acoustic impedance of liquids in an acoustic waveguide,” presented at the 13th
    International Conference Sensor + Test 2007, Nürnberg, 2007, vol. II, pp. 87–92.
  mla: Rautenberg, Jens, and Bernd Henning. <i>New Approach for the Reliable Measurement
    of Acoustic Impedance of Liquids in an Acoustic Waveguide</i>. Vol. II, 2007,
    pp. 87–92.
  short: 'J. Rautenberg, B. Henning, in: 2007, pp. 87–92.'
conference:
  end_date: 24.05.2007
  location: Nürnberg
  name: 13th International Conference Sensor + Test 2007
  start_date: 22.05.2007
date_created: 2019-12-17T13:22:24Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
page: 87-92
publication_identifier:
  isbn:
  - 978-3-9810993-2-4
status: public
title: New approach for the reliable measurement of acoustic impedance of liquids
  in an acoustic waveguide
type: conference
user_id: '15911'
volume: II
year: '2007'
...
---
_id: '15340'
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.'
author:
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  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.'
  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>.
  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}
    }'
  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.
  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.
  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.
  short: 'J. Rautenberg, B. Henning, in: Proceedings of the International Congress
    on Ultrasonics, 2007.'
date_created: 2019-12-17T13:23:16Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
publication: Proceedings of the International Congress on Ultrasonics
status: public
title: Separation of mode-specific signals in a fluid-filled circular waveguide
type: conference
user_id: '15911'
year: '2007'
...
---
_id: '15341'
author:
- first_name: Hans-Michael
  full_name: Sonnenberg, Hans-Michael
  last_name: Sonnenberg
- first_name: Axel
  full_name: Schmidt-Schoenian, Axel
  last_name: Schmidt-Schoenian
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Carsten
  full_name: Unverzagt, Carsten
  last_name: Unverzagt
- first_name: Romina
  full_name: Kehl, Romina
  last_name: Kehl
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: Sonnenberg H-M, Schmidt-Schoenian A, Rautenberg J, Unverzagt C, Kehl R, Henning
    B. <i>Ultraschallzähler</i>.; 2007.
  apa: Sonnenberg, H.-M., Schmidt-Schoenian, A., Rautenberg, J., Unverzagt, C., Kehl,
    R., &#38; Henning, B. (2007). <i>Ultraschallzähler</i>.
  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} }'
  chicago: Sonnenberg, Hans-Michael, Axel Schmidt-Schoenian, Jens Rautenberg, Carsten
    Unverzagt, Romina Kehl, and Bernd Henning. <i>Ultraschallzähler</i>, 2007.
  ieee: H.-M. Sonnenberg, A. Schmidt-Schoenian, J. Rautenberg, C. Unverzagt, R. Kehl,
    and B. Henning, <i>Ultraschallzähler</i>. 2007.
  mla: Sonnenberg, Hans-Michael, et al. <i>Ultraschallzähler</i>. 2007.
  short: H.-M. Sonnenberg, A. Schmidt-Schoenian, J. Rautenberg, C. Unverzagt, R. Kehl,
    B. Henning, Ultraschallzähler, 2007.
date_created: 2019-12-17T13:24:08Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
language:
- iso: eng
status: public
title: Ultraschallzähler
type: misc
user_id: '15911'
year: '2007'
...
---
_id: '15342'
abstract:
- lang: eng
  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."
author:
- first_name: Torsten
  full_name: Vössing, Torsten
  last_name: Vössing
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  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.'
  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.'
  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} }'
  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.'
  ieee: T. Vössing, J. Rautenberg, and B. Henning, “Sensorelektronik zur Bestimmung
    von Reflexionen sensoroberflächennaher Schichten,” in <i>Fortschritte der Akustik</i>,
    2007.
  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.
  short: 'T. Vössing, J. Rautenberg, B. Henning, in: S.-R. Mehra (Ed.), Fortschritte
    Der Akustik, Dt. Ges. für Akustik, Berlin, 2007.'
date_created: 2019-12-17T13:25:15Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
editor:
- first_name: Schew-Ram
  full_name: Mehra, Schew-Ram
  last_name: Mehra
language:
- iso: eng
place: Berlin
publication: Fortschritte der Akustik
publication_identifier:
  isbn:
  - '9783980865937'
publisher: Dt. Ges. für Akustik
status: public
title: Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten
type: conference
user_id: '15911'
year: '2007'
...
---
_id: '15343'
abstract:
- lang: eng
  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."
author:
- first_name: Torsten
  full_name: Vössing, Torsten
  last_name: Vössing
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  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.'
  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.'
  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} }'
  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.'
  ieee: T. Vössing, J. Rautenberg, and B. Henning, “Sensorelektronik zur Bestimmung
    von Reflexionen sensoroberflächennaher Schichten,” in <i>Fortschritte der Akustik</i>,
    Stuttgar, 2007.
  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.
  short: 'T. Vössing, J. Rautenberg, B. Henning, in: S.-R. Mehra (Ed.), Fortschritte
    Der Akustik, Dt. Ges. für Akustik, Berlin, 2007.'
conference:
  end_date: '22.03.2007 '
  location: Stuttgar
  name: 3. Deutsche Jahrestagung für Akustik (DAGA 2007)
  start_date: '19.03.2007 '
date_created: 2019-12-17T13:31:04Z
date_updated: 2022-01-06T06:52:20Z
department:
- _id: '49'
editor:
- first_name: Schew-Ram
  full_name: Mehra, Schew-Ram
  last_name: Mehra
language:
- iso: eng
place: Berlin
publication: Fortschritte der Akustik
publication_identifier:
  isbn:
  - '9783980865937'
publisher: Dt. Ges. für Akustik
status: public
title: Sensorelektronik zur Bestimmung von Reflexionen sensoroberflächennaher Schichten
type: conference
user_id: '15911'
year: '2007'
...
---
_id: '15344'
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].
author:
- first_name: Torsten
  full_name: Vössing, Torsten
  last_name: Vössing
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Romina
  full_name: Kehl, Romina
  last_name: Kehl
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: 'Vössing T, Rautenberg J, Kehl R, Henning B. Simultaneous transmitting and
    receiving with ultrasonic sensors. In: ; 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} }'
  chicago: Vössing, Torsten, Jens Rautenberg, Romina Kehl, and Bernd Henning. “Simultaneous
    Transmitting and Receiving with Ultrasonic Sensors,” 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.
  mla: Vössing, Torsten, et al. <i>Simultaneous Transmitting and Receiving with Ultrasonic
    Sensors</i>. 2007.
  short: 'T. Vössing, J. Rautenberg, R. Kehl, B. Henning, in: 2007.'
conference:
  end_date: 24.05.2007
  location: Nuremberg
  name: 3th International Conference Sensor + Test 2007
  start_date: 22.05.2007
date_created: 2019-12-17T14:22:24Z
date_updated: 2022-01-06T06:52:21Z
department:
- _id: '49'
language:
- iso: eng
publication_identifier:
  isbn:
  - 978-3-9810993-2-4
status: public
title: Simultaneous transmitting and receiving with ultrasonic sensors
type: conference
user_id: '15911'
year: '2007'
...
---
_id: '15345'
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.
author:
- first_name: Torsten
  full_name: Vössing, Torsten
  last_name: Vössing
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Andreas
  full_name: Schröder, Andreas
  last_name: Schröder
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  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.'
  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.
  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} }'
  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.
  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.
  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.
  short: 'T. Vössing, J. Rautenberg, A. Schröder, B. Henning, in: 2007.'
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
date_created: 2019-12-17T14:27:14Z
date_updated: 2022-01-06T06:52:21Z
department:
- _id: '49'
language:
- iso: eng
status: public
title: Ultrasonic measurement of the characteristic acoustic impedance using a directional
  coupler to analyse reference reflections from thin layers
type: conference
user_id: '15911'
year: '2007'
...
---
_id: '15347'
abstract:
- lang: eng
  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."
author:
- first_name: Romina
  full_name: Kehl, Romina
  last_name: Kehl
- first_name: Jens
  full_name: Rautenberg, Jens
  last_name: Rautenberg
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: 'Kehl R, Rautenberg J, Henning B. Schwingungsverhalten eines flüssigkeitsgefüllten
    Tanks. In: ; 2006:407-408.'
  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.
  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} }'
  chicago: Kehl, Romina, Jens Rautenberg, and Bernd Henning. “Schwingungsverhalten
    Eines Flüssigkeitsgefüllten Tanks,” 407–8, 2006.
  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.
  mla: Kehl, Romina, et al. <i>Schwingungsverhalten Eines Flüssigkeitsgefüllten Tanks</i>.
    2006, pp. 407–08.
  short: 'R. Kehl, J. Rautenberg, B. Henning, in: 2006, pp. 407–408.'
conference:
  end_date: 23.03.2006
  location: Braunschweig
  name: 32. Deutsche Jahrestagung für Akustik (DAGA 2006)
  start_date: 21.03.2006
date_created: 2019-12-17T14:30:29Z
date_updated: 2022-01-06T06:52:21Z
department:
- _id: '49'
language:
- iso: eng
page: 407-408
status: public
title: Schwingungsverhalten eines flüssigkeitsgefüllten Tanks
type: conference
user_id: '15911'
year: '2006'
...
---
_id: '15348'
abstract:
- lang: eng
  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.
author:
- first_name: Romina
  full_name: Kehl, Romina
  last_name: Kehl
- first_name: Ralf
  full_name: Stroop, Ralf
  last_name: Stroop
- first_name: David
  full_name: Oliva Uribe, David
  last_name: Oliva Uribe
- first_name: Tobias
  full_name: Hemsel, Tobias
  last_name: Hemsel
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  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.'
  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.
  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} }'
  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.
  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.
  mla: Kehl, Romina, et al. <i>Tactile Sensors for Determination of Elastic Properties
    of Brain Tissue Mimicking Phantoms</i>. 2006.
  short: 'R. Kehl, R. Stroop, D. Oliva Uribe, T. Hemsel, B. Henning, in: 2006.'
conference:
  end_date: 14.10.2006
  location: Hannover
  name: Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte
    Chirurgie (CURAC 2006)
  start_date: 12.10.2006
date_created: 2019-12-17T14:33:15Z
date_updated: 2022-01-06T06:52:21Z
department:
- _id: '49'
language:
- iso: eng
status: public
title: Tactile sensors for determination of elastic properties of brain tissue mimicking
  phantoms
type: conference
user_id: '15911'
year: '2006'
...