CORDIS
EU research results

CORDIS

English EN
Flexible Conductive Composite Repair Heaters

Flexible Conductive Composite Repair Heaters

Objective

"Appropriate curing of the patch resin and the adhesive layer is an essential step to secure the integrity and the sound mechanical performance of a bonded composite repair. Today, the required elevation of temperature is usually achieved by means of resistance heating blankets, which conduct heat to the repair area, regulated through closed loop temperature control, using one or two spot temperature measurements. Even though this method is rather simple and works adequately for small repairs, when larger areas need to be heated, discrepancies, like cold or hot spots, frequently occur, due to variable heat losses, caused by geometrical asymmetry, “heat sinks” etc. The scope of this proposal, further to the know-how of the proposing Consortium in conventional resistance heating and induction heating, is to develop a third heating method called Conductive Skin Heating (CSH). The main advantages of CSH are that the voltage and the current could be very low compared to heat mats because of the very good efficiency of this middle frequency heating, which will be about 50 Hz to 20 kHz. Similarly, the voltage range could be limited between 5 to 100 V, which means that the maximum current in the mat will be less than 100 A, depending on the application and the heating rates which need to be achieved. Consequently, the CSH-mats could be much cheaper, while the electrical danger for the operators and any peripherical electronic devices will be significantly reduced. Additionally, as this method allows heating of very thin foils, the CSH-mats will be very flexible and easy to adapt to complex 3Dgeometries, while they could be easily integrated into the vacuum bag. Consequently, the handling of this thin and lightweight CSH-mats will be much easier compared to the other heating systems used for FRP repair, like thermal blanket and induction heating."
Leaflet | Map data © OpenStreetMap contributors, Credit: EC-GISCO, © EuroGeographics for the administrative boundaries

Coordinator

GMI AERO SAS

Address

Rue Buffault 9
75009 Paris

France

Activity type

Private for-profit entities (excluding Higher or Secondary Education Establishments)

EU Contribution

€ 99 000

Administrative Contact

Roland Chemama (Mr.)

Participants (1)

Sort alphabetically

Sort by EU Contribution

Expand all

NATIONAL TECHNICAL UNIVERSITY OF ATHENS - NTUA

Greece

EU Contribution

€ 29 999

Project information

Grant agreement ID: 296501

Status

Closed project

  • Start date

    1 December 2011

  • End date

    31 August 2014

Funded under:

FP7-JTI

  • Overall budget:

    € 171 999,60

  • EU contribution

    € 128 999

Coordinated by:

GMI AERO SAS

France