A Test Set-Up for Rayleigh Wave Propagation in Solid Media
Open Access
- Author:
- Sullivan, Eric
- Area of Honors:
- Engineering Science
- Degree:
- Bachelor of Science
- Document Type:
- Thesis
- Thesis Supervisors:
- Parisa Shokouhi, Thesis Supervisor
Patrick M Lenahan, Thesis Honors Advisor - Keywords:
- Rayleigh Waves
Metamaterial
metasurface
Resonator - Abstract:
- Technical: This research is part of a larger study of designing, simulating, and experimentally verifying resonant metasurfaces for forbidding the propagation of Rayleigh surface waves. Specifically, this work is focused on generating baseline data of the propagation in solid half-space. I present the results pertaining to materials: Delrin plastic and aluminum. The final experimental design was found through trial and error of many preliminary set-ups. We had originally planned a fully experimental study, but due to this trouble at the beginning of the experiments, and results that were hard to interpret, a numerical simulation was done for the Delrin sample. This numerical simulation of Delrin was done with the ABAQUS CAE software as a 2D solid model with damping data that was imputed from experimental results. The main results of this work are the successful generation and reception of Rayleigh surface waves in both Delrin and aluminum, and the estimation of an attenuation coefficient for Delrin that can be confirmed with simulation and experiments. Lay: This research is part of a larger study of designing, simulating, and experimentally verifying resonators for forbidding the propagation of Rayleigh surface waves. Specifically, this work is focused on generating baseline data of the propagation in solid half-space. I present the results pertaining to materials: Delrin plastic and aluminum. Originally, we had planned a fully experimental study, but early experiments gave results which were hard to interpret. Therefore, numerical simulations were done for the Delrin sample. The main results of this work are the successful generation and reception of Rayleigh surface waves in both Delrin and aluminum, and the estimation of an attenuation coefficient for Delrin that can be confirmed with simulation and experiments.