Although it is unquestionable that weld root bead profile has a significant influence on the fatigue performance of girth welds, other factors may also play a part. (W 48) (1)

Fatigue performance = Desempenho de fadiga

A unique experiment carried out at TWI a few years ago compared the welding performance of a number of fibre-delivered lasers with beam qualities ranging between 4 and 23mm.mrad. (W 140) (2)

Welding performance = Desempenho de soldagem

The article discusses an investigation of the creep performance of advanced high alloy steel welds. (W 22) (3)

Creep performance = Desempenho de fluência

(1) Fatigue testing of full-scale girth welded pipes under variable amplitude loading

Yan-Hui Zhang and Stephen J Maddox, 

TWI Limited, Cambridge, UK

Paper presented at OMAE 2012 31st Annual Conference on Ocean, Offshore and Arctic Engineering, 1-6 July 2012, Rio de Janeiro, Brazil. Paper No.83054.

(2) An assessment of the welding performance of high-brightness lasers and a comparison with in-vacuum electron beams

Geert Verhaeghe and Bruce Dance

Paper presented at ICALEO 2008, 27th International Congress on Applications of Lasers & Electro-Optics, Pechanga Resort & Casino Temecula, CA, USA. 20-23 October 2008. Paper no. 710.

(3) Review of type IV cracking of weldments in 9– 12%Cr creep strength enhanced ferritic steels.

D. J. Abson and J. S. Rothwell* 

TWI Ltd

International Materials Reviews, November 2013, 58(8), 437-473.