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Sensitivity of Lamb waves in viscoelastic polymer plates to surface contamination
Detecting surface contamination on thin thermoformed polymer plates is a critical issue for various industrial applications. Lamb waves …
Jakub Spytek, Daniel A. Kiefer, Ros Kiri Ing, Claire Prada, Jérôme Grando, Julien de Rosny
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Sensitivity of Lamb waves in viscoelastic polymer plates to surface contamination
Electroelastic guided wave dispersion in piezoelectric plates: Spectral methods and laser-ultrasound experiments
Electroelastic waves in piezoelectric media are widely used in sensing and filtering applications. Despite extensive research, …
Daniel A. Kiefer, Georg Watzl, Katharina Burgholzer, Martin Ryzy, Clemens Grünsteidl
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Electroelastic guided wave dispersion in piezoelectric plates: Spectral methods and laser-ultrasound experiments
Extreme wave skewing and dispersion spectra of anisotropic elastic plates
Guided wave dispersion is commonly assessed by Fourier analysis of the field along a line, resulting in frequency-wave-number …
Daniel A. Kiefer, Sylvain Mezil, Claire Prada
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Extreme wave skewing and dispersion spectra of anisotropic elastic plates
Computation of leaky waves in layered structures coupled to unbounded media by exploiting multiparameter eigenvalue problems
We present a semi-analytical approach to compute quasi-guided elastic wave modes in horizontally layered structures radiating into …
Hauke Gravenkamp, Bor Plestenjak, Daniel A. Kiefer, Elias Jarlebring
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Computation of leaky waves in layered structures coupled to unbounded media by exploiting multiparameter eigenvalue problems
Viscoelastic dynamics of a soft strip subject to a large deformation
To produce sounds, we adjust the tension of our vocal folds to shape their properties and control the pitch. This efficient mechanism …
Alexandre Delory, Daniel A. Kiefer, Maxime Lanoy, Antonin Eddi, Claire Prada, Fabrice Lemoult
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Viscoelastic dynamics of a soft strip subject to a large deformation
Beating resonance patterns and extreme power flux skewing in anisotropic elastic plates
Elastic waves in anisotropic media can exhibit a power flux that is not collinear with the wave vector. This has notable consequences …
Daniel A. Kiefer, Sylvain Mezil, Claire Prada
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Beating resonance patterns and extreme power flux skewing in anisotropic elastic plates
Notes on osculations and mode tracing in semi-analytical waveguide modeling
The dispersion curves of (elastic) waveguides frequently exhibit crossings and osculations (also known as veering, repulsion, or …
Hauke Gravenkamp, Bor Plestenjak, Daniel A. Kiefer
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Notes on osculations and mode tracing in semi-analytical waveguide modeling
Computing zero-group-velocity points in anisotropic elastic waveguides: Globally and locally convergent methods
Dispersion curves of elastic waveguides exhibit points where the group velocity vanishes while the wavenumber remains finite. These are …
Daniel A. Kiefer, Bor Plestenjak, Hauke Gravenkamp, Claire Prada
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Computing zero-group-velocity points in anisotropic elastic waveguides: Globally and locally convergent methods
Transit Time of Lamb Wave-Based Ultrasonic Flow Meters and the Effect of Temperature
Transit-time flow meters need to compensate for cross-sensitivity to temperature. We show that Lamb wave-based setups are less affected …
Daniel A. Kiefer, Andreas Benkert, Stefan J. Rupitsch
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Transit Time of Lamb Wave-Based Ultrasonic Flow Meters and the Effect of Temperature
Comparison of Transmission Measurement Methods of Elastic Waves in Phononic Band Gap Materials
Periodic cellular structures can exhibit metamaterial properties, such as phononic band gaps. In order to detect these frequency bands …
Maximilian Wormser, Daniel A. Kiefer, Stefan J. Rupitsch, Carolin Körner
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