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An acoustic waveguide-based approach to the complete characterisation of linear elastic, orthotropic material behaviour

Ein Wellenleiter-basierter Ansatz zur akustischen Charakterisierung des kompletten linear-elastischen, orthotropen Materialverhaltens
Sarah Johannesmann

Sarah Johannesmann is a research associate at the Measurement Engineering Group at Paderborn University, Germany. After graduating in 2016, she now works on methods for the simulation of guided acoustic fields and the determination of acoustic material parameters.

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, Julia Düchting

Julia Düchting graduated from Paderborn University in 2017. She worked on the characterisation of fibre-reinforced thermoplastics at the Measurement Engineering Group.

, Manuel Webersen

Manuel Webersen has been a research associate at the Measurement Engineering Group at Paderborn University, Germany since graduation in 2014. His current research focus is the acoustic characterization of material properties and aging of polymer-based materials.

, Leander Claes

Leander Claes completed his studies in electrical engineering in 2014. Since 2015, he has been a research associate and, starting mid-2016, deputy head of the Measurement Engineering Group at Paderborn University, Germany. His current research focus is the acoustic characterization of fluids.

and Bernd Henning

Prof. Dr.-Ing. Bernd Henning is head of the Measurement Engineering Group, Faculty of Electrical Engineering, Computer Science and Mathematics at Paderborn University, Germany. His main areas of research are acoustic measurement procedures, ultrasonic and optical measurement engineering as well as biomedical measurement techniques.

From the journal tm - Technisches Messen

Abstract

In this paper, a method for the characterisation of orthotropic, plate-shaped material samples is presented. Ultrasonic plate waves are excited at different angles and then detected. Then, a two-dimensional simulation model can be used to inversely estimate a set of material parameters for each angle of propagation. After merging these individual results into a global set of parameters, the material’s elastic behaviour can be described for arbitrary load directions. The procedure is exemplarily applied to characterise continuous-fibre reinforced polymers.

Zusammenfassung

In diesem Beitrag wird ein Verfahren vorgestellt, das die richtungsabhängige Charakterisierung orthotroper, plattenförmiger Materialproben ermöglicht. Dazu werden Ultraschall-Plattenwellen unter verschiedenen Winkeln im Material angeregt und wieder detektiert. Unter Verwendung eines zweidimensionalen Simulationsmodells können die Materialparameter für jeden Winkel im inversen Vefahren geschätzt werden. Werden die Ergebnisse anschließend zu einem globalen Parametersatz zusammengeführt, kann das elastische Materialverhalten für beliebige Belastungsrichtungen beschrieben werden. Abschließend wird das Verfahren exemplarisch auf Endlosfaser-verstärkte Kunststoffe angewendet.

PACS: 06.30.-k

Award Identifier / Grant number: HE 2897/6–1

Award Identifier / Grant number: HE 2897/6–2

Funding statement: This work was funded by the German Research Foundation (DFG) [Grant number HE 2897/6–1 and HE 2897/6–2].

About the authors

Sarah Johannesmann

Sarah Johannesmann is a research associate at the Measurement Engineering Group at Paderborn University, Germany. After graduating in 2016, she now works on methods for the simulation of guided acoustic fields and the determination of acoustic material parameters.

Julia Düchting

Julia Düchting graduated from Paderborn University in 2017. She worked on the characterisation of fibre-reinforced thermoplastics at the Measurement Engineering Group.

Manuel Webersen

Manuel Webersen has been a research associate at the Measurement Engineering Group at Paderborn University, Germany since graduation in 2014. His current research focus is the acoustic characterization of material properties and aging of polymer-based materials.

Leander Claes

Leander Claes completed his studies in electrical engineering in 2014. Since 2015, he has been a research associate and, starting mid-2016, deputy head of the Measurement Engineering Group at Paderborn University, Germany. His current research focus is the acoustic characterization of fluids.

Bernd Henning

Prof. Dr.-Ing. Bernd Henning is head of the Measurement Engineering Group, Faculty of Electrical Engineering, Computer Science and Mathematics at Paderborn University, Germany. His main areas of research are acoustic measurement procedures, ultrasonic and optical measurement engineering as well as biomedical measurement techniques.

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Received: 2017-11-30
Revised: 2018-01-31
Accepted: 2018-02-19
Published Online: 2018-03-02
Published in Print: 2018-07-26

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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