Project description
New generation acoustic devices
Dielectric elastomers (DEs) are a class of smart materials capable of transforming electrical stimulation into mechanical work. This property makes them ideal for use in soft low-cost acoustic devices such as loudspeakers. The aim of the EU-funded DEtune project is to develop new DE acoustic diaphragms that facilitate the regulation of vibrations and allow fine control of the acoustic response. Through the development of specific algorithms, scientists will promote the self-sensing of the vibrations generated by electrical or acoustic signals. The project's activities will ultimately lead to a DE acoustic transducer prototype capable of functioning both as a speaker and a microphone.
Objective
The project operates in the key European research area of enabling technologies based on Advanced Materials. It deals with a class of smart electroactive polymers, called dielectric elastomers (DEs), which can be promisingly employed to develop soft low-cost electrostatic machines able to respond to electrical stimuli with high deformations and large actuation bandwidth. In the field of acoustics, DEs might enable the development of new loudspeakers in which the vibrating diaphragm and the actuator are combined into a soft membrane that can be adapted to arbitrary shapes or integrated into wearable textile structures.
This project will develop radically new DE acoustic diaphragms exploiting the paradigms of distributed surface actuation (DSA) and self-sensing. DSA will allow a regulation of diaphragms vibrations via localised excitation of the active surface, allowing a fine control of the acoustic response. Self-sensing will allow DE devices to work both as sound generation sources and sound pressure sensors, opening new perspectives in the field of active noise control and acoustic characterisation of environments.
Theoretical background on continuum vibrations in DE membranes will be first developed through modelling and experimental investigation with high-end laser vibrometry equipment. Multi-physics models of the acoustic-structure interaction of the DE diaphragms will be set-up. Diaphragms with DSA will be deployed through the segmentation of the active DE surface into arrays of independently-controlled portions via screen printing techniques. Algorithms for self-sensing of the vibrations generated by electrical or acoustic signals will be developed, which rely on simple electrical measurements of the active areas electrical variables. Finally, a prototype of a DE acoustic transducer, capable to work both as a speaker and a microphone, will be built, and its performance will be optimised leveraging on the investigated features of DSA and self-sensing.
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: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- natural sciences chemical sciences polymer sciences
- engineering and technology materials engineering textiles
- natural sciences physical sciences acoustics
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering sensors
- natural sciences computer and information sciences computational science multiphysics
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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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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
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.
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
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.
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.
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2019
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
66123 Saarbrucken
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.