62858 2024 eng lecture 0 -- -- -- This work investigates the phenomenon of mode repulsion in coupled Lamb wave systems. By mechanically coupling two dissimilar plates using spring elements, it is shown that previously intersecting Lamb wave modes are repelled, avoiding any crossing in the dispersion curves. The effect, rooted in eigenvalue theory and first observed in quantum systems, is explained through both mathematical models and classical analogies with coupled harmonic oscillators. Numerical simulations using the Scaled Boundary Finite Element Method validate the theoretical predictions, revealing a correlation between strain distribution and frequency splitting. The observed mode repulsion provides new insights into interface properties and offers potential for applications such as monitoring adhesive degradation in layered structures. DAGA 2024 Hannover, Germany 18.03.2024 0 publish false true Marcel Nicolai eng uncontrolled Lamb waves eng uncontrolled Mode repulsion eng uncontrolled Mechanical coupling eng uncontrolled Dispersion curves eng uncontrolled Scaled Boundary Finite Element Method (SBFEM) Ingenieurwissenschaften und zugeordnete Tätigkeiten 8 Zerstörungsfreie Prüfung 8.4 Akustische und elektromagnetische Verfahren Material Degradationsmechanismen Datei im Netzwerk der BAM verfügbar ("Closed Access") Präsentation