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INNOVATIVE REPAIR OF AEROSPACE STRUCTURES WITH CURING OPTIMIZATION AND LIFE CYCLE MONITORING ABILITIES

Objective

Bonded composite patches are ideal for aircraft structural repair as they offer enhanced specific properties, case-tailored performance and excellent corrosion resistance. Bonding further eliminates stress concentrations induced from mechanical fastening of metal sheets, seals the interface, and reduces the risk of fretting fatigue between the patch and the component. IAPETUS focuses on the use of improved composite repair systems offering (i) the introduction of new on-aircraft simplified curing technologies, (ii) enhanced fatigue and damage tolerance properties and (iii) integrated damage sensing. This will be performed via the incorporation of carbon nanotubes (CNTs) both in the composite matrix of the repair patch as well as in the adhesive. The use CNT modified repair concept will lead to improved performance in the blunting of stress concentrations in the parent surface and the inhibition of crack propagation, leading to enhanced fatigue resistance at the locus of the repair as well as for the patch itself. At the same time, the patch repair acquires additional functionalities. The CNT doped Carbon Composites can be tailored to reduce the galvanic corrosion in repaired Aluminium structures. As the patch becomes electrically and thermally conductive thermal energy can be infused in the patch either by direct resistance heating (using the patch itself as heating element via the application of electrical voltage) or by induction heating, to instigate a uniform matrix polymerization since the patch system appears improved thermal conductivity too. The electrically conductive percolated network can be employed to assess the damage within the patch and its interface with the repaired structure, as conductivity changes mirror the damage in the doubler/substrate system by tracing micro damage through breaches in the CNT network; thus, the structural efficiency monitoring at any stage in the service life of the aerostructure can be assessed non-destructively.

Field of science

  • /engineering and technology/materials engineering/composites
  • /natural sciences/chemical sciences/inorganic chemistry/inorganic compounds
  • /engineering and technology/mechanical engineering/vehicle engineering/aerospace engineering/aircraft

Call for proposal

FP7-AAT-2008-RTD-1
See other projects for this call

Funding Scheme

CP-FP - Small or medium-scale focused research project

Coordinator

FUNDACION TECNALIA RESEARCH & INNOVATION
Address
Parque Cientifico Y Tecnologico De Gipuzkoa Paseo Mikeletegi 2
20009 Donostia/san Sebastian (Gipuzkoa)
Spain
Activity type
Research Organisations
EU contribution
€ 480 126,15
Administrative Contact
Sonia Flórez (Dr.)

Participants (9)

WYTWORNIA SPRZETU KOMUNIKACYJNEGO PZL-Swidnik Spolka Akcyjna
Poland
EU contribution
€ 152 950
Address
Al. Lotnikow Polskich 1
21045 Swidnik
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Pawel Chojnacki (Mr.)
HUNTSMAN ADVANCED MATERIALS (SWITZERLAND) GMBH
Switzerland
EU contribution
€ 50 359,38
Address
Klybeckstrasse 200
4057 Basel
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Panayota Tsotra (Dr.)
PANEPISTIMIO PATRON
Greece
EU contribution
€ 411 990
Address
University Campus Rio Patras
265 04 Rio Patras
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Vassilios Kostopoulos (Prof.)
INASCO HELLAS ETAIREIA EFARMOSMENON AERODIASTIMIKON EPISTIMON EE
Greece
EU contribution
€ 186 899,44
Address
Napoleontos Zerva 18
16675 Glyfada Athina
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Dimitri Bofilios (Dr.)
DAHER AEROSPACE SAS

Participation ended

France
EU contribution
€ 45 305,62
Address
Route De Tours 23
41400 Saint Julien De Chedon
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Michael Hugon (Mr.)
GMI AERO
France
EU contribution
€ 239 850
Address
13 Rue Georges Auric Cap 19
75019 Paris
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Roland Chemama (Mr.)
THE UNIVERSITY OF SHEFFIELD
United Kingdom
EU contribution
€ 226 440
Address
Firth Court Western Bank
S10 2TN Sheffield
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Gill Wells (Ms.)
HELLENIC AEROSPACE INDUSTRY SA
Greece
EU contribution
€ 223 674,68
Address
Mesogeion Street 2-4
11527 Athens
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Athanassios Chronopoulos (Mr.)
PANEPISTIMIO IOANNINON
Greece
EU contribution
€ 321 999,73
Address
Panepistemioypole Panepistemio Ioanninon
45110 Ioannina
Activity type
Higher or Secondary Education Establishments
Administrative Contact
George Detsikas (Mr.)