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A Sylvester equation approach for the computation of zero-group-velocity points in waveguides
Eigenvalues of parameter-dependent quadratic eigenvalue problems form eigencurves. The critical points on these curves, where the …
Bor Plestenjak, Daniel A. Kiefer, Hauke Gravenkamp
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A Sylvester equation approach for the computation of zero-group-velocity points in waveguides
Exploring the limits to quantitative elastography: supersonic shear imaging in stretched soft strips
Objective. Shear wave elastography has enriched ultrasound medical imaging with quantitative tissue stiffness measurements. We aim to …
Samuel Croquette, Alexandre Delory, Daniel A. Kiefer, Claire Prada, Fabrice Lemoult
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Exploring the limits to quantitative elastography: supersonic shear imaging in stretched soft strips
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