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|Title:||From Control of Lamb Waves in Plates to Seismic Metamaterials|
|Group/Series/Folder:||Record Group 8.15 - Institute for Advanced Study|
Series 3 - Audio-visual Materials
|Notes:||Croucher Advanced Study Institute on New Materials and New Concepts for Controlling Light and Waves. Talk no.7|
Host: HKUST Institute for Advanced Study.
Sponsor: The Croucher Foundation.
Abstract: This talk addresses mathematical models for the propagation of elastic waves in structured plates and their application to the focussing of (a) Lamb waves in a 8.5cm thick Duraluminium plate with an array circular holes (diameter: 12mm, array pitch 15mm) around frequency 20 KHz and (b) Rayleigh waves in a soil with an array of air columns (diameter: 32cm, array pitch 2m) around frequency 50 Hz. The first experiment was performed at the Institut Langevin in Paris, while the second experiment was carried out near the alpine city of Grenoble (France). A third experiment for cloaking of Lamb waves around 400 Hz in a PVC plate with about 100 perforations is also discussed.
Duration: 43 min.
|Appears in Series:||8.15:3 - Audio-visual Materials|
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