FSW: PAUT-TOFD System


Inspection of Friction Stir Welds by Phased Array Ultrasonic Testing and Time of Flight Diffraction

Nordakraft's PAUT-TOFD probe in the tool holder of Sespel's 3D FSW machine

© Nordinkraft

    


AluStir offers an industrially proven, automatic ultrasonic inspection system combining Phased Array Ultrasonic Testing (PAUT) and Time of Flight Diffraction (TOFD) of Friction stir welds.[1]

 

The Sonaflex FSW Systems uses a set of ultrasonic testing probes consisting two Phased Array probes (PA 1 and PA 2) with a total of 16 channels and eight angle beam transducers arranged in two groups for performing TOFD/ATOFD. ATOFD is an advanced variant of the classical TOFD method which we developed due to its excellent performance for assessing friction stir welds.

 

Please contact us at AluStir, if you are interested in more details or a demonstration on your FSW workpieces.

Nordakraft's Test Elelectronics Unit 'SonaFlex' in Sespel's 3D FSW machine

© Nordinkraft

   


FSW tool in the tool holder of Sespel's 3D FSW machine

© Nordinkraft

   


Demo of the ultrasonic testing procedure of a friction stir welded aluminium plate

© Nordinkraft

 

    

Water is used to provide better coupling between the PAUD-TOFD transducers and the friction stir welded parts to be inspected. A clever system has been developed to dry off the wet workpieces.

   

Industrial Application

The PAUD-TOFD system was installed in a FSW machine operated by Sespel, a Russian company that gained so much expertise during the day-to-day application of friction stir welding in Cheboksary that Roscosmos called a group of Sespel's specialists to Samara in 2020 to implement friction stir welding to the Soyuz-5 launch vehicle and carry out the operations.[2]

 

How to Implement PAUD-TOFD for FSW?

by         

If you want to implement a PAUD-TOFD system in your FSW machine, please contact us without any obligations by phone (+49 6024 636 0123) or by E-Mail (stephan.kallee@alustir.com). At AluStirwe can provide impartial advice on non-destructive testing of friction stir welds.

    


Patents

References