Objective The required elevation of temperature for curing of composite repairs is usually achieved by resistance heating blankets, controlled through spot temperature measurements. Although this method is simple and works adequately for small repairs, when larger areas are heated, cold or hot spots frequently occur, due to variable heat losses, caused by geometrical asymmetry etc. For this reason, autoclave curing of large repairs is currently used, as the most reliable curing methodology, which is however accompanied by high cost, wastes and energy consumption. The scope of this proposal is to enable the extension of heating blankets technology for the treatment of large repairs (e.g. reversers), currently requiring autoclave heating. A five step process is proposed:a)Thermal transfer simulation, to retrieve the “thermal signature” of the part and experimental validation using heat flux sensors,b)Manufacturing of thermal blankets, namely adapted Variable Heating Elements (VHE), with denser or coarser heating elements inside, and standard Compensation Heating Elements (CHE), in order to compensate for dissimilar heat losses,c)Development of universal Advanced Heating Control Unit (AHCU), with innovative programmable closed loop control,d)Development of a specialized High Power Supply Unit (HPSU,e)Process validation. It is expected that, this innovative methodology will allow the performance of structural repairs, either totally out-of-autoclave or in combination with autoclave treatment, as required, thus improving the overall heating process and achieving large scale economies compared to current autoclave solutions. Given that specified repairs are generally standardized, steps (a) and (b) will only need to be performed once per P/N to be repaired, while the developed equipment described in steps (c) and (d) will be totally reusable, thus significantly decreasing the non-recurring cost encountered per repair. Fields of science engineering and technologymechanical engineeringthermodynamic engineeringengineering and technologymaterials engineeringcompositesengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringsensors Programme(s) FP7-JTI - Specific Programme "Cooperation": Joint Technology Initiatives Topic(s) JTI-CS-2010-3-ECO-01-006 - Enhanced local heating device capable of high and homogeneous temperature for the repair of large composite damages Call for proposal SP1-JTI-CS-2010-03 See other projects for this call Funding Scheme JTI-CS - Joint Technology Initiatives - Clean Sky Coordinator GMI AERO Address 13 rue georges auric cap 19 75019 Paris France See on map Region Ile-de-France Ile-de-France Paris Activity type Private for-profit entities (excluding Higher or Secondary Education Establishments) Administrative Contact Roland Chemama (Mr.) Links Contact the organisation Opens in new window Website Opens in new window EU contribution No data Participants (1) Sort alphabetically Sort by EU Contribution Expand all Collapse all ETHNICON METSOVION POLYTECHNION Greece EU contribution € 36 000,00 Address Heroon polytechniou 9 zographou campus 157 80 Athina See on map Region Αττική Aττική Κεντρικός Τομέας Αθηνών Activity type Higher or Secondary Education Establishments Administrative Contact Georgia Mertzelou (Ms.) Links Contact the organisation Opens in new window Website Opens in new window Other funding No data
