TY - CONF
AU - Zeipert, Henning
AU - von Germeten, Christian
AU - Friesen, Olga
AU - Claes, Leander
AU - Johannesmann, Sarah
AU - Henning, Bernd
ID - 43233
T2 - Fortschritte der Akustik - DAGA 2023
TI - Investigation of change in dispersive behaviour during adhesive curing in multi-layered structures
ER -
TY - CONF
AU - Nicolai, Marcel
AU - Zeipert, Henning
AU - Lugovtsova, Yevgeniya
AU - Bulling, Jannis
AU - Johannesmann, Sarah
AU - Prager, Jens
AU - Henning, Bernd
ID - 43234
T2 - Fortschritte der Akustik - DAGA 2023
TI - Characterization of adhesion strength using guided ultrasonic waves
ER -
TY - CONF
AU - Nicolai, Marcel
AU - Zeipert, Henning
AU - Lugovtsova, Yevgeniya
AU - Bulling, Jannis
AU - Johannesmann, Sarah
AU - Prager, Jens
AU - Henning, Bernd
ID - 6590
T2 - Fortschritte der Akustik - DAGA 2022
TI - Quantification of the adhesive coupling of layered structures using guided ultrasonic waves
ER -
TY - JOUR
AB - Abstract
In this paper a measurement procedure to identify viscoelastic material parameters of plate-like samples using broadband ultrasonic waves is presented. Ultrasonic Lamb waves are excited via the thermoelastic effect using laser radiation and detected by a piezoelectric transducer. The resulting measurement data is transformed to yield information about multiple propagating Lamb waves as well as their attenuation. These results are compared to simulation results in an inverse procedure to identify the parameters of an elastic and a viscoelastic material model.
AU - Johannesmann, Sarah
AU - Claes, Leander
AU - Feldmann, Nadine
AU - Zeipert, Henning
AU - Henning, Bernd
ID - 30863
IS - 7 - 8
JF - tm - Technisches Messen
KW - Electrical and Electronic Engineering
KW - Instrumentation
SN - 2196-7113
TI - Lamb wave based approach to the determination of acoustic material parameters
VL - 89
ER -
TY - CONF
AU - Zeipert, Henning
AU - Johannesmann, Sarah
AU - Nicolai, Marcel
AU - Lugovtsova, Yevgeniya
AU - Prager, Jens
AU - Henning, Bernd
ID - 26033
T2 - Fortschritte der Akustik - DAGA 2021
TI - Quantifying the coupling strength of adhesively bonded materials by investigating mode repulsion regions
ER -
TY - CONF
AU - Lugovtsova, Yevgeniya
AU - Zeipert, Henning
AU - Johannesmann, Sarah
AU - Nicolai, Marcel
AU - Prager, Jens
AU - Henning, Bernd
ID - 27847
T2 - МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ В ЕСТЕСТВЕННЫХ НАУКАХ - XXX Всероссийская школа-конференция
TI - К ОПРЕДЕЛЕНИЮ ПРОЧНОСТИ КЛЕЕВОГО СОЕДИНЕНИЯ В МНОГОСЛОЙНЫХ МАТЕРИАЛАХ ПУТЕМ ИССЛЕДОВАНИЯ ОБЛАСТЕЙ РАСТАЛКИВАНИЯ БЕГУЩИХ УПРУГИХ ВОЛН
ER -
TY - CONF
AU - Zeipert, Henning
AU - Claes, Leander
AU - Johannesmann, Sarah
AU - Webersen, Manuel
AU - Lugovtsova, Yevgeniya
AU - Prager, Jens
AU - Henning, Bernd
ID - 22013
TI - Measurement and Simulation of Lamb Waves in Adhesive-bonded Multilayer Systems
ER -
TY - JOUR
AU - Claes, Leander
AU - Chatwell, René Spencer
AU - Baumhögger, Elmar
AU - Hetkämper, Tim
AU - Zeipert, Henning
AU - Vrabec, Jadran
AU - Henning, Bernd
ID - 22925
JF - Measurement
SN - 0263-2241
TI - Measurement procedure for acoustic absorption and bulk viscosity of liquids
ER -
TY - JOUR
AB - An approach for the non-destructive characterisation of adhesive bonds using guided ultrasonic waves is presented. Pulsed laser radiation is used to thermoacoustically excite broadband ultrasonic waves in a multi-layered sample, consisting of a metal plate adhesively joined to a polymeric layer using synthetic resin. The resulting signals are received by a purpose-built piezoelectric transducer. Varying the distance between excitation and detection yields spatio-temporal measurement data, from which the dispersive properties of the propagating waves can be inferred using a two-dimensional Fourier transform, assuming the plates to act as coupled waveguides. Coupled multi-layered waveguides show an effect referred to as mode repulsion, where the distance between certain modes in the frequency-wavenumber domain is assumed to be a measure of coupling strength. Measurements at different stages of curing of the adhesive layer are performed and evaluated. A comparison of the results shows changes in the dispersive properties, namely an increased modal bandwidth for the fully cured sample as well as an increased modal distance.
AU - Zeipert, Henning
AU - Claes, Leander
AU - Johannesmann, Sarah
AU - Lugovtsova, Yevgeniya
AU - Nicolai, Marcel
AU - Prager, Jens
AU - Henning, Bernd
ID - 27367
JF - at - Automatisierungstechnik
SN - 2196-677X
TI - An approach to adhesive bond characterisation using guided acoustic waves in multi-layered plates
ER -
TY - GEN
AU - Claes, Leander
AU - Zeipert, Henning
AU - Koppa, Peter
AU - Tröster, Thomas
AU - Henning, Bernd
ID - 6594
TI - Additiv gefertigte, akustische Diffusor-Strukturen für Ultraschallanwendungen
ER -
TY - CONF
AU - Claes, Leander
AU - Zeipert, Henning
AU - Koppa, Peter
AU - Tröster, Thomas
AU - Henning, Bernd
ID - 6559
T2 - Proceedings of Meetings on Acoustics
TI - Additively manufactured acoustic diffuser structures for ultrasonic measurement applications
ER -