ASSESSMENT OF QUALITY OF POWER BEAM WELD JOINTS ASPOW

Record Control Number : 23593
Quality Validation Date : 1999-12-22
Update Date : 1999-12-22
Abstract : The Brite-Euram project Assessment of Quality of Power Beam Welded 
                Joints (ASPOW)  deals with the laser and electron beam weldability 
                of structural C-Mn and duplex and stainless, Cr-Mo steels, 
                Superalloys, Ti-alloys and Al-alloys as well as with the 
                non-destructive (NDT)  inspection of such welds and their 
                mechanical-fracture properties.
                Object of the first part of the weldability work was the LBW and 
                EBW welding of different widely used structural materials and 
                alloys using two different types of laser: a CO2 and a Nd-YAG laser 
                sources. Further, the laser weldability work concerned welding of 
                an industrial component, a turbine rear casing, some parts of which 
                may need replacement during component lifetime. In particular this 
                operation was carried out between the case and the attachment 
                flange. The EBW has also been applied for welding of Al-alloy 
                bridge components as well as welding of girth joints in high 
                temperature material pipes.
                
                The second part of the ASPOW Project is to recommend suitable 
                mechanical testing techniques for the assessment of power beam 
                (electron and laser)  welds based on the substantial amount of 
                small (tensile, Charpy-V, CTOD, bend)  and large (Wide Plate, 
                I-beam and fatigue of Al-beam)  scale testing and evaluation work 
                conducted during the project duration of three years.
Subject Descriptors : Laser technology
Subject Index Codes : Other Technology
Collaboration Sought : Information exchange
Programmes : BRITE/EURAM 3
Projects : BRPR950021
Project Title : Assessment of Quality of Power Beam Weld Joints


Contact Details
  Contact Name : KOçAK, Mustafa (Dr)
  Contact Organisation : GKSS Research Center
  Address : Max-Planck Straße
  City : Geesthacht
  Region : SCHLESWIG-HOLSTEIN
Herzogtum Lauenburg
  Postcode : 21502
  Country : GERMANY
  Telephone Number : +49-4152-872536
  Fax Number : +49-4152-872536
  Electronic Mailbox : mustafa.kocak@gkss.de
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CORDIS Database: RESULTS
Measurement of reduced gaps in stacked structures by tangential radiography


Record Control Number : 23600
Quality Validation Date : 1999-12-23
Update Date : 1999-12-23
Abstract : A French research centre has developed a new non-destructive 
                testing industrial applications of high energy physics technologies 
                allowing the measurement of small gaps in stacked structures. 
                The system is very suitable for heavy metals materials but it is 
                adaptable to lighter materials as well. It is possible to measure 
                small gaps in assembled structures that are unaccessible from the 
                inside or the outside.
                A French research centre specialised in high energy physics and 
                metallurgy has developped a new technology for industrial use in 
                the measurement of defects.
                
                This technique is using tangential radiography and allows the 
                measurement of reduced gaps (10 to 1000 µm)  in multi-layered 
                cylindrical assemblies. By comparing the densitometric profile thus 
                obtained with theoretical profile of the part, it is possible to 
                detect and sketch micro gaps in the structure. 
                
                The system uses a 420 kV source and is very suitable for heavy 
                metals materials (atomic number Z > 30) 
                 Innovative Aspects:
                - modelisation of densitometric profile very accurate and adaptable 
                to other geometries (planar, spherical) 
                - different X-ray sources
Innovative Aspects : Innovative Aspects:
                - modelisation of densitometric profile very accurate and adaptable 
                to other geometries (planar, spherical) 
                - different X-ray sources available 
                
                Main Advantages:
                - measurement of small gaps in assembled structures unaccessible 
                from the inside or the outside adaptable to lighter materials by 
                changing the X-ray source
Subject Descriptors : Biochemistry
Subject Index Codes : Life Sciences
Stage of Development : Tested, available for demonstration
Remarks : IRC Data: BBS Ref ABOL/O/F/99.005
Property Rights : Patent(s) applied for but not yet granted
Collaboration Sought : Further research or development support, Licence agreement, 
                Information exchange


Contact Details
  Contact Name : VOLLE, Laurent
  Contact Organisation : Chambre Régionale de Commerce et d'Industrie de Bourgogne
  Address : ARIST
Place des Nations-Unies
  City : Dijon
  Region : BASSIN PARISIEN
BOURGOGNE
Côte-d'Or
  Postcode : 21006
  Country : FRANCE
  Telephone Number : +33-38-0604091
  Fax Number : +33-38-0604023
  Electronic Mailbox : l.volle@bourgogne.cci.fr