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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.

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

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.
telephone: 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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