Non-linear Acoustics Transversal Axis

The Nonlinear Acoustics transversal axis aims to integrate and promote research across the laboratory's three teams, fostering both internal and transversal collaborations. It serves as a platform for sharing knowledge and tools, coordinating responses to project calls, and facilitating exchanges through bibliographic monitoring, mini-workshops, and in-house training sessions for PhD students and permanent staff.

This axis plays a central role in structuring the laboratory's nonlinear research, focusing on six key themes:

• Nonlinear Mechanical Metamaterials: Investigating the propagation of nonlinear waves, dynamic control of flexible metamaterials, and the emergence of nonlinear topological edge modes.

• High-Amplitude Sound Propagation in Air-Filled Waveguides: Analyzing the effects of acoustic nonlinearities, fluid dynamics, dispersion, and the formation of shock waves and acoustic solitons.

• Bifurcations and Nonlinear Vibrations of Elastic Structures: Studying the onset of buckling, instability, and periodic solutions in nonlinear elastic structures.

• Nonlinear Phenomena in Musical Acoustics: Exploring the role of nonlinearity in sound production by musical instruments, and developing numerical and experimental methods for bifurcation analysis across diverse dynamical systems.

• Non-Destructive Material Characterization Using Nonlinear Methods: Advancing techniques for assessing material properties through nonlinear acoustic signals for improved non-destructive evaluation.

• Transducer Nonlinearities: Developing theoretical models, measurement techniques, and advanced signal processing methods for controlling transducer nonlinearities.