Project description
A revolutionary approach to controlling nonlinear acoustic waves based on non-Hermitian mechanics
Traditional sound-absorbing materials or synthetic, custom-designed materials are limited in their ability to strongly attenuate high-amplitude nonlinear acoustic waves. Such acoustic waves, stemming from power plants or gas transport systems, undermine the structures, causing vibration and structural fatigue. The ERC-funded NASA project will utilise recent results from non-Hermitian physics to attenuate high-amplitude nonlinear sound waves. The planned design principles and tools will foster the development of efficient, adoptable and reliable noise reduction technologies particularly in heavy industry and aviation.
Objective
Audible sound is an inevitable physical phenomenon which can be the best or the worst of all things. In its best form, is essential to human communication and entertainment. In its worst form, it appears as a social and health threat through noise in urban and domestic environments, arising from sources such as vehicles, ventilation systems, construction sites and aircraft engines. Both European and international organisations identify noise as a major health issue of modern society and insist on regulating its levels. Some modern noise reduction solutions, using artificial periodic composites and benefiting from the 3D printing techniques do exist, however an important problem regarding sound absorption still remains unsolved and unexplored.
High amplitude nonlinear waves cannot be absorbed using the existing conventional techniques and devices. These high amplitude nonlinear waves in fact pose an even larger problem than noise. When they appear in applications such as power plants or gas transport systems they can cause significant environmental, reliability, and safety problems stemming from vibration and structural fatigue.
In an original perspective, the NASA project, will utilise recent results from non-Hermitian physics to tame and absorb high amplitude, nonlinear sound waves. The project strives to uncover the main sources of nonlinearity in acoustic isolation solutions, and to use active nonreciprocal scatterers in unison with modern concepts such as topological physics, proposing an unconventional way to efficiently absorb nonlinear acoustic waves. Nonlinearity, which is known to lead into chaos, and randomness, when in conjunction with non-Hermiticity, raises fundamental questions and their synergy may revolutionise our ability to control waves. Within NASA I aim develop novel design principles and tools which will foster the development of efficient, adoptable, and reliable noise reduction technologies particularly in heavy industry and aviation.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology materials engineering composites
- engineering and technology mechanical engineering vehicle engineering aerospace engineering aircraft
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2022-STG
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75794 PARIS
France
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