@misc{15176,
  author       = {{Feldmann, Nadine and Bause, Fabian and Henning, Bernd}},
  title        = {{{GUM-konforme Unsicherheitsabschätzung bei inversen Problemen am Beispiel akustischer Transmissionsmessungen}}},
  year         = {{2016}},
}

@phdthesis{13860,
  author       = {{Bause, Fabian}},
  publisher    = {{Universität Paderborn}},
  title        = {{{Ein ultraschallbasiertes inverses Messverfahren zur Charakterisierung viskoelastischer Materialparameter von Polymeren}}},
  year         = {{2016}},
}

@inproceedings{13864,
  author       = {{Bause, F. and Henning, Bernd}},
  publisher    = {{LibreCat University}},
  title        = {{{5.3.1 - Ein ultraschallbasiertes inverses Messverfahren zur Charakterisierung viskoelastischer Materialparameter von Polymeren}}},
  doi          = {{10.5162/SENSOREN2016/5.3.1}},
  year         = {{2016}},
}

@inproceedings{13865,
  author       = {{Ester, S. and Struschka, M. and Henning, Bernd}},
  publisher    = {{LibreCat University}},
  title        = {{{3.2.3 - Direktgravimetrischer Partikelmasse-Sensor zur quasikontinuierlichen Emissionsmessung}}},
  doi          = {{10.5162/SENSOREN2016/3.2.3}},
  year         = {{2016}},
}

@inproceedings{13215,
  author       = {{Moritzer, Elmar and Hüttner, Matthias and Henning, Bernd and Webersen, Manuel}},
  location     = {{Lyon}},
  title        = {{{An Approach to Non-Destructive Testing of Aged Polymers}}},
  year         = {{2016}},
}

@article{13216,
  author       = {{Moritzer, Elmar and Hüttner, Matthias and Henning, Bernd and Webersen, Manuel}},
  journal      = {{Kunststoffe}},
  number       = {{4}},
  pages        = {{94--96}},
  title        = {{{Molekularen Schäden auf der Spur}}},
  year         = {{2016}},
}

@article{13217,
  author       = {{Moritzer, Elmar and Hüttner, Matthias and Henning, Bernd and Webersen, Manuel}},
  journal      = {{Kunststoffe International}},
  number       = {{4}},
  pages        = {{43--45}},
  title        = {{{Detecting Molecular Damage}}},
  year         = {{2016}},
}

@inproceedings{13218,
  author       = {{Moritzer, Elmar and Hüttner, Matthias and Henning, Bernd and Webersen, Manuel}},
  isbn         = {{978-0-692-71961-9}},
  location     = {{Indianapolis}},
  title        = {{{Non-destructive characterization of hygrothermally aged polymers}}},
  year         = {{2016}},
}

@inbook{13219,
  author       = {{Moritzer, Elmar and Hüttner, Matthias and Henning, Bernd and Webersen, Manuel}},
  booktitle    = {{Jahresmagazin Kunststofftechnik 2016}},
  pages        = {{2--7}},
  title        = {{{Ultraschallbasierte Charakterisierung von gealterten Polymeren}}},
  year         = {{2016}},
}

@inproceedings{13223,
  abstract     = {{In der zerstörungsfreien Werkstoffprüfung sind bereits zahlreiche Verfahren etabliert, deren Ziel die Detektion makroskopischer Defekt- und Fehlstellen (z.B. Risse, Poren, Fremdeinschlüsse) ist. Insbesondere bei Polymerwerkstoffen muss jedoch auch die Materialalterung auf molekularer Ebene berücksichtigt werden, die sich (zumeist negativ) auf die Materialkenngrößen auswirkt. Gängige Verfahren zur Bestimmung dieser Kenngrößen arbeiten jedoch üblicherweise zerstörend und sind somit beispielsweise für die vorbeugende Instandhaltung oder die Online-Komponentenüberwachung nur eingeschränkt geeignet. In diesem Beitrag wird ein Verfahren zur zerstörungsfreien Charakterisierung des Alterungszustandes von Polymeren vorgestellt. Dazu wird der Zusammenhang zwischen akustisch (zerstörungsfrei, mittels Ultraschall-Transmissionsmessung) bestimmten Kenngrößen und klassisch (zerstörend, z.B. mittels Zugprüfung) bestimmten hydrothermischer Alterung auf das Material Polyamid 6 (PA6) untersucht. Die Ergebnisse Kenngrößen betrachtet. Exemplarisch werden die Auswirkungen zeigen einen engen Zusammenhang zwischen der zerstörend bestimmten Viskositätszahl, die ein Maß für die mittlere Molekülkettenlänge darstellt, und der akustischen Longitudinalwellengeschwindigkeit. Das Molekülkettenabbau (Depolymerisation) bestimmt ist, kann somit auch akustisch und zerstörungsfrei charakterisiert werden. Auf dieser Basis können neuartige, zerstörungsfrei arbeitende Messsysteme entwickelt werden.}},
  author       = {{Webersen, Manuel and Hüttner, Matthias and Bause, Fabian and Moritzer, Elmar and Henning, Bernd}},
  isbn         = {{978-3-9816876-0-6}},
  location     = {{Nürnberg}},
  pages        = {{683--688}},
  title        = {{{Zerstörungsfreie Charakterisierung des hydrothermischen Alterungsverhaltens von Polymeren}}},
  doi          = {{10.5162/sensoren2016/P6.4}},
  year         = {{2016}},
}

@article{6555,
  author       = {{Claes, Leander and Meyer, Thorsten and Bause, Fabian and Rautenberg, Jens and Henning, Bernd}},
  issn         = {{2194-878X}},
  journal      = {{Journal of Sensors and Sensor Systems}},
  number       = {{1}},
  pages        = {{187--196}},
  title        = {{{Determination of the material properties of polymers using laser-generated broadband ultrasound}}},
  doi          = {{10.5194/jsss-5-187-2016}},
  volume       = {{5}},
  year         = {{2016}},
}

@article{13863,
  author       = {{Olfert, Sergei and Henning, Bernd}},
  journal      = {{Technisches Messen}},
  number       = {{4}},
  pages        = {{219--224}},
  title        = {{{Erweiterung des Raman-Nath-Modells zur Analyse von Schlierenabbildungen}}},
  doi          = {{10.1515/teme-2015-0116}},
  volume       = {{83}},
  year         = {{2016}},
}

@misc{13862,
  author       = {{Olfert, Sergei and Henning, Bernd}},
  publisher    = {{LibreCat University}},
  title        = {{{Anwendungsmöglichkeiten der Schallfeldvisualisierung in der Ultraschallmesstechnik}}},
  year         = {{2016}},
}

@inproceedings{6554,
  author       = {{Claes, Leander and Bause, Fabian and Rautenberg, Jens and Henning, Bernd}},
  booktitle    = {{Proceedings SENSOR 2015}},
  keywords     = {{piezoceramics, strip transducers, plate waveguide, dispersion diagram}},
  pages        = {{775--779}},
  title        = {{{Detection of ultrasonic plate waves using ceramic strip transducers}}},
  doi          = {{10.5162/sensor2015/P3.3}},
  year         = {{2015}},
}

@misc{13866,
  author       = {{Olfert, Sergei and Henning, Bernd}},
  title        = {{{Analyse integral erfasster rotationssymmetrischer Schallwechseldruckverteilungen in Schlierenabbildungen}}},
  year         = {{2015}},
}

@misc{13867,
  author       = {{Kulshreshtha, Kshitij and Jurgelucks, Benjamin and Bause, Fabian and Rautenberg, Jens and Unverzagt, Carsten}},
  title        = {{{On the optimal configuration of triple-ring-electrodes on piezoceramic transducers towards increased parameter sensitivity of impedance}}},
  year         = {{2015}},
}

@inbook{13877,
  author       = {{Olfert, Sergei and Henning, Bernd}},
  booktitle    = {{XXIX Messtechnisches Symposium}},
  isbn         = {{9783110408539}},
  title        = {{{Analyse integral erfasster Schallwechseldruckverteilungen in Schlierenabbildungen}}},
  doi          = {{10.1515/9783110408539-010}},
  year         = {{2015}},
}

@misc{13891,
  author       = {{Jurgelucks, Benjamin and Kulshreshtha, Kshitij and Bause, Fabian and Rautenberg, Jens and Unverzagt, Carsten}},
  title        = {{{On the optimal configuration of triple-ring-electrodes on piezoceramic transducers towards increased parameter sensitivity of impedance}}},
  year         = {{2015}},
}

@inproceedings{13892,
  abstract     = {{Several ultrasonic approaches for material determination are formulated in terms of an (nonlinear) inverse problem, e.g. immersion technique (Castaings et al. (2000)) or plate-waveguide techniques (Marzani et al. (2012)). In this contribution we focus on cylindrical waveguides for ultrasonic material determination and especially on the sensitivity of recorded transmission signals to the material properties. We utilize composite scaled sensitivities to determine the information content that can be achieved by the setup to certain parameters and discuss the limitations of the approach.}},
  author       = {{Bause, Fabian and Gravenkamp, Hauke and Rautenberg, Jens and Henning, Bernd}},
  keywords     = {{Sensitivity inverse problem ultrasonic material determination}},
  pages        = {{204--207}},
  title        = {{{Model based sensitivity analysis in the determination of viscoelastic material properties using transmission measurements through circular waveguides}}},
  year         = {{2015}},
}

@article{13893,
  abstract     = {{In this contribution, we present an efficient approach for the transient and time-causal modeling of guided waves in viscoelastic cylindrical waveguides in the context of ultrasonic material characterization. We use the scaled boundary finite element method (SBFEM) for efficient computation of the phase velocity dispersion. Regarding the viscoelastic behavior of the materials under consideration, we propose a decomposition approach that considers the real-valued frequency dependence of the (visco-)elastic moduli and, separately, of their attenuation. The modal expansion approach is utilized to take the transmitting and receiving transducers into account and to propagate the excited waveguide modes through a waveguide of finite length. The effectiveness of the proposed simulation model is shown by comparison with a standard transient FEM simulation as well as simulation results based on the exact solution of the complex-valued viscoelastic guided wave problem. Two material models are discussed, namely the fractional Zener model and the anti-Zener model; we re-interpret the latter in terms of the Rayleigh damping model. Measurements are taken on a polypropylene sample and the proposed transient simulation model is used for inverse material characterization. The extracted material properties may then be used in computer-aided design of ultrasonic systems.}},
  author       = {{Bause, Fabian and Gravenkamp, Hauke and Rautenberg, Jens and Henning, Bernd}},
  issn         = {{0957-0233}},
  journal      = {{Measurement Science and Technology}},
  keywords     = {{viscoelasticity, ultrasonics, guided waves, inverse problem, scaled boundary finite element method}},
  number       = {{095602 (17pp)}},
  title        = {{{Transient modeling of ultrasonic guided waves in circular viscoelastic waveguides for inverse material characterization}}},
  doi          = {{10.1088/0957-0233/26/9/095602}},
  volume       = {{26}},
  year         = {{2015}},
}