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Development of Short Distance WELding Concepts for AIRframes (WEL-AIR project)

Objective

The age of sustainable growth in which the world aeronautics is entering will require to the Research and Technology development to contribute to the strengthening of the competitiveness of the aeronautic manufacturing industry with more economical, performant and better quality products.

Weight and cost efficiency will be obtained on the "Integral Structure" or "Rivet-Free"Al-alloy airframes through the use of advanced welding technologies such as laser beam (LBW) and friction stir welding (FSW) and the introduction of new aluminium alloys with improved performances : welded integral structures are claimed to offer a cost saving of up to 60% over built-up structures.

Large distance LBW skin-stringer joints for manufacturing of panels of the current fuselage of A318 are used and similar applications are also planned for other next generation aircrafts. Now, there is a need to extend this current level of technological achievement to "more critical and difficult-to-join" sections of the metallic airframes through replacement of conventional riveted sub-sections with short distance welded integral structure which exhibits lightweight and damage tolerant features.

The main scientific and technological objectives of the project are :
* To optimise and validate the most suitable short distance LBW process parameters for various Al-alloy combinations for joining of stiffener/cleat-skin connections (containing run-outs) of the airframes by understanding and control the basic mechanisms of the hot tearing, crack initiation and crack growth.
* To develop short distance friction stir welding process for some FSW suitable joints and non laser weldable alloys and hence gaining new knowledge for both joining processes for such new applications.
* To develop repair schemes of short distance welds and define allowable damages to minimize the maintenance and operational costs.

Field of science

  • /natural sciences/physical sciences/optics/laser physics
  • /engineering and technology/mechanical engineering/vehicle engineering/aerospace engineering/aircraft
  • /natural sciences/chemical sciences/inorganic chemistry/inorganic compounds

Call for proposal

FP6-2002-AERO-1
See other projects for this call

Funding Scheme

STREP - Specific Targeted Research Project

Coordinator

EUROPEAN AERONAUTIC DEFENCE AND SPACE COMPANY EADS FRANCE SAS
Address
Boulevard De Montmorency 37
Paris
France

Participants (13)

GKSS - FORSCHUNGSZENTRUM GEESTHACHT GMBH
Germany
Address
Max-planck-strasse 1
Geesthacht
AIRBUS OPERATIONS GMBH
Germany
Address
Kreetslag 10
Hamburg
AIRBUS FRANCE SAS
France
Address
Route De Bayonne 316
Toulouse
EUROPEAN AERONAUTIC DEFENSE AND SPACE COMPANY - EADS DEUTSCHLAND GMBH
Germany
Address
Willy-messerschmitt-strasse
Muenchen
OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES
France
Address
Av De La Division Leclerc, 29
BP72 Chatillon
ALCAN CENTRE DE RECHERCHES DE VOREPPE
France
Address
Rue Aristide Berges 725
BP27 Voreppe
SOCIETE ANONYME BELGE DE CONSTRUCTIONS AERONAUTIQUES
Belgium
Address
Chaussee De Haecht 1470
Brussels
ALENIA AERONAUTICA SPA
Italy
Address
Viale Dell'aeronautica Snc
Pomigliano D'arco (Na)
UNIVERSITY OF PATRAS
Greece
Address
Panepistimioupoli - Rio
Patras
INSTITUT DE SOUDURE
France
Address
Rue Des Vanesses 90 - Zone Industrielle Paris-nord Ii
Villepinte
DASSAULT AVIATION S.A
France
Address
Rond-point Des Champs-elysees - Marcel Dassault 9
Paris
DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E.V.
Germany
Address
Linder Hoehe
Köln
PIAGGIO AERO INDUSTRIES S.P.A
Italy
Address
Viale Castro Pretorio 116
Roma