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Journal article
Experimental Observation of a Large Low-Frequency Band Gap in a Polymer Waveguide
Frontiers in materials, v 5, 8
22 Feb 2018
Abstract
The quest for large and low-frequency band gaps is one of the principal objectives pursued in a number of engineering applications, ranging from noise absorption to vibration control, and to seismic wave abatement. For this purpose, a plethora of complex architectures (including multiphase materials) and multiphysics approaches have been proposed in the past, often involving difficulties in their practical realization. To address the issue of proposing a material design that enables large band gaps using a simple configuration, in this study we propose an easy-to-manufacture design able to open large, low-frequency complete Lamb band gaps exploiting a suitable arrangement of masses and stiffnesses produced by cavities in a monolithic material. The performance of the designed structure is evaluated by numerical simulations and confirmed by scanning laser Doppler vibrometer (SLDV) measurements on an isotropic polyvinyl chloride plate in which a square ring region of cross-like cavities is fabricated. The full wave field reconstruction clearly confirms the ability of even a limited number of unit cell rows of the proposed design to efficiently attenuate Lamb waves. In addition, numerical simulations show that the structure allows to shift the central frequency of the BG through geometrical modifications. The design may be of interest for applications in which large BGs at low frequencies are required
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Details
- Title
- Experimental Observation of a Large Low-Frequency Band Gap in a Polymer Waveguide
- Creators
- M. Miniaci - Laboratoire Ondes et Milieux ComplexesMatteo Mazzotti - Drexel UniversityMaciej Radzieński - Institute of Fluid Flow MachineryNesrine Kherraz - Université Le Havre NormandiePawel Kudela - Szewalski Institute of Fluid-Flow Machinery [Gdańsk]Wieslaw Ostachowicz - Szewalski Institute of Fluid-Flow Machinery [Gdańsk]Bruno Morvan - Université Le Havre NormandieFederico Bosia - University of TurinNicola M. Pugno - Agenzia Spaziale Italiana
- Publication Details
- Frontiers in materials, v 5, 8
- Publisher
- Frontiers Media
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000426088300001
- Scopus ID
- 2-s2.0-85051109572
- Other Identifier
- 991021882211104721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary