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METACLOAK SIGNED

Broadband cloaking and shielding of elastic waves in solids.

Total Cost €

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EC-Contrib. €

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Partnership

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 METACLOAK project word cloud

Explore the words cloud of the METACLOAK project. It provides you a very rough idea of what is the project "METACLOAK" about.

theory    closely    protection    broad    flexural    giving    arrangement    thin       larger    hence    spaced    section    guide    expertise    energy    wavelength    concerning    index    wave    scalability    composite    vibrations    realised    governing    negative    mathematics    vertical    cluster    building    cloak    periodic    combination    interaction    quantitative    imperial    fixed    metamaterials    maintaining    simulations    engineering    mechanical    practical    consisting    laboratory    enormously    refraction    nominal    co    optimal    elastic    strategies    local    simplify    physics    innovative    resonators    college    waves    validation    seismology    underpin    active    performances    tune    optimisation    will    fine    material    cloaking    infrasound    resonant    metamaterial    refine    propagate    benefit    3d    construction    smaller    frequency    gaps    performance    models    sound    band    numerical    resonance    groupings    structure    capacities    sub    schemes    unrealistic    plate    besides    contrary    diffraction    experimental    beams    surpasses    khz   

Project "METACLOAK" data sheet

The following table provides information about the project.

Coordinator
IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE 

Organization address
address: SOUTH KENSINGTON CAMPUS EXHIBITION ROAD
city: LONDON
postcode: SW7 2AZ
website: http://www.imperial.ac.uk/

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
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 Coordinator Country United Kingdom [UK]
 Project website http://www.imperial.ac.uk/people/a.colombi
 Total cost 183˙454 €
 EC max contribution 183˙454 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-11-01   to  2017-10-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE UK (LONDON) coordinator 183˙454.00

Map

 Project objective

In this project we aim to develop the theory to underpin the optimal design of metamaterial devices. We will test the theory by building a metamaterial cloak which surpasses current models in its combination of elastic wave protection and cloaking capacities at frequency band much larger (~1 kHz). The design of the cloak is based on a novel metamaterial that I have co-developed, consisting of a cluster of closely spaced sub-wavelength resonators fixed to a thin plate where flexural waves propagate. The effective properties of this cloak are generated by local resonance effects and they include, besides large band gaps, negative diffraction (refraction) index, sub-wavelength energy focusing and broad scalability in the sound and infrasound frequency range. Contrary to other studies, it does not require an unrealistic composite material to be realised, or a periodic arrangement of resonant elements and hence it should have real practical impact. Two innovative applications concerning control of mechanical vibrations, and seismology are proposed. To refine the modelling, detailed numerical simulations and development of optimisation schemes are required: this will benefit enormously from interaction with several groupings at Imperial College (in Physics, Mathematics and Mechanical Engineering), highly active in elastic waves and metamaterials, that have very relevant expertise. 3D numerical simulations giving quantitative analysis of the cloak properties and performance will guide the construction of laboratory models for experimental validation. The distribution and the structure of the resonators (vertical beams with nominal section much smaller than the wavelength) are the main parameters governing the performances of the cloak. The optimisation strategies that will be implemented will fine tune the cloak within a given frequency band and/or simplify the cloak design maintaining the same performance level.

 Publications

year authors and title journal last update
List of publications.
2016 Andrea Colombi
Resonant metalenses for flexural waves in plates
published pages: EL423-EL428, ISSN: 0001-4966, DOI: 10.1121/1.4967179
The Journal of the Acoustical Society of America 140/5 2019-06-07
2017 Andrea Colombi, Richard V. Craster, Daniel Colquitt, Younes Achaoui, Sebastien Guenneau, Philippe Roux, Matthieu Rupin
Elastic Wave Control Beyond Band-Gaps: Shaping the Flow of Waves in Plates and Half-Spaces with Subwavelength Resonant Rods
published pages: , ISSN: 2297-3079, DOI: 10.3389/fmech.2017.00010
Frontiers in Mechanical Engineering 3 2019-06-07
2017 D.J. Colquitt, A. Colombi, R.V. Craster, P. Roux, S.R.L. Guenneau
Seismic metasurfaces: Sub-wavelength resonators and Rayleigh wave interaction
published pages: 379-393, ISSN: 0022-5096, DOI: 10.1016/j.jmps.2016.12.004
Journal of the Mechanics and Physics of Solids 99 2019-06-07
2017 Andrea Colombi, Victoria Ageeva, Richard J. Smith, Adam Clare, Rikesh Patel, Matt Clark, Daniel Colquitt, Philippe Roux, Sebastien Guenneau, Richard V. Craster
Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces
published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-017-07151-6
Scientific Reports 7/1 2019-06-07
2016 Philippe Guéguen, Andrea Colombi
Experimental and Numerical Evidence of the Clustering Effect of Structures on Their Response during an Earthquake: A Case Study of Three Identical Towers in the City of Grenoble, France
published pages: 2855-2864, ISSN: 0037-1106, DOI: 10.1785/0120160057
Bulletin of the Seismological Society of America 106/6 2019-06-07
2016 Andrea Colombi, Philippe Roux, Sebastien Guenneau, Philippe Gueguen, Richard V. Craster
Forests as a natural seismic metamaterial: Rayleigh wave bandgaps induced by local resonances
published pages: , ISSN: 2045-2322, DOI: 10.1038/srep19238
Scientific Reports 6/1 2019-06-07
2016 Andrea Colombi, Daniel Colquitt, Philippe Roux, Sebastien Guenneau, Richard V. Craster
A seismic metamaterial: The resonant metawedge
published pages: , ISSN: 2045-2322, DOI: 10.1038/srep27717
Scientific Reports 6/1 2019-06-07

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