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Henning Zeipert, M.Sc.

 Henning Zeipert, M.Sc.

Elektrische Messtechnik (EMT)

Wissenschaftlicher Mitarbeiter - Schallwandlerentwicklung, Charakterisierung von Mehrschichtsystemen

+49 5251 60-3021
Pohlweg 47-49
33098 Paderborn

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Quantification of the adhesive coupling of layered structures using guided ultrasonic waves

M. Nicolai, H. Zeipert, Y. Lugovtsova, J. Bulling, S. Johannesmann, J. Prager, B. Henning, in: Fortschritte der Akustik - DAGA 2022, 2022, pp. 1394-1397

Lamb wave based approach to the determination of acoustic material parameters

S. Johannesmann, L. Claes, N. Feldmann, H. Zeipert, B. Henning, tm - Technisches Messen (2022), 89(7 - 8), pp. 493 - 506

<jats:title>Abstract</jats:title> <jats:p>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.</jats:p>


Quantifying the coupling strength of adhesively bonded materials by investigating mode repulsion regions

H. Zeipert, S. Johannesmann, M. Nicolai, Y. Lugovtsova, J. Prager, B. Henning, in: Fortschritte der Akustik - DAGA 2021, 2021


Y. Lugovtsova, H. Zeipert, S. Johannesmann, M. Nicolai, J. Prager, B. Henning, in: МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ В ЕСТЕСТВЕННЫХ НАУКАХ - XXX Всероссийская школа-конференция, 2021

Measurement and Simulation of Lamb Waves in Adhesive-bonded Multilayer Systems

H. Zeipert, L. Claes, S. Johannesmann, M. Webersen, Y. Lugovtsova, J. Prager, B. Henning, 2021, pp. 91 - 92


An approach to adhesive bond characterisation using guided acoustic waves in multi-layered plates

H. Zeipert, L. Claes, S. Johannesmann, Y. Lugovtsova, M. Nicolai, J. Prager, B. Henning, at - Automatisierungstechnik (2021), pp. 962-969

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 <jats:italic>mode repulsion</jats:italic>, 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.

Measurement procedure for acoustic absorption and bulk viscosity of liquids

L. Claes, R.S. Chatwell, E. Baumhögger, T. Hetkämper, H. Zeipert, J. Vrabec, B. Henning, Measurement (2021), 109919



Additiv gefertigte, akustische Diffusor-Strukturen für Ultraschallanwendungen

L. Claes, H. Zeipert, P. Koppa, T. Tröster, B. Henning, 2018


Additively manufactured acoustic diffuser structures for ultrasonic measurement applications

L. Claes, H. Zeipert, P. Koppa, T. Tröster, B. Henning, in: Proceedings of Meetings on Acoustics, 2017, pp. 030004


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