FSW is conducted below the melting point by pressing a rotating tool into the joint line. (W 216) (1)

Melting point = Ponto de fusão

A plume suppression gas jet (argon) was angled at 40° to the surface of the work-piece, trailing the laser beam, with an impingement point 1mm above the laser beam focus. (W 188) (2)

Impingement point = Ponto de impacto

Either way for the purpose of this analysis an assumption of a transition point is conservative in terms of life assessment at long terms. (W 30) (3)

Transition point = Ponto de transição

(1) Friction stir technology – recent developments in process variants and applications

D G Staines, W M Thomas, S W Kallee and P J Oakley 

TWI Ltd

Paper presented at Conference in Montreal, COM 2006, Sheraton Centre Hotel, October 1-4 2006.

(2) In-process weld quality monitoring of laser and hybrid laser-arc fillet welds in 6-12mm C-Mn steel.

G. Shi, P. Hilton and G. Verhaeghe

Paper presented at Proceedings of the Fourth International WLT-Conference on Lasers in Manufacturing 2007 (LIM2007) , Munich, 18 – 22 June 2007.

(3) Creep Crack Growth Prediction of Very Long Term P91 Steel Using Extrapolated Short-Term Uniaxial Creep Data.

S. Maleki 

TWI Ltd.

A. Mehmanparast, K. M. Nikbin 

Imperial College London

Paper presented at the 2013 ASME Pressure Vessels and Piping Conference. Paris, France, 14-18 July 2013.