The geometry of the weld and heat-affected zone is determined by the power density, i.e. 25, 105 and 105kW/mm2 respectively, and laser energy input, i.e. 1292, 888 and 592J/mm respectively, used for welding. (W 275) (1)

Heat-affected zone = Zona afetada pelo calor

It was ….reported that beam weaving laser welding technique would suppress porosity and that increased width to depth ratio of the molten metal was beneficial for the escape of bubbles in the weld zone. (W 141) (2)

Weld zone = Zona de solda

For inspecting EF joints, the challenge was to achieve a resolution good enough to be able to inspect the fusion zone beyond the heating wires. (W 47) (3)

Fusion zone = Zona de fusão

(1) Battle of the sources – using a high-power Yb-fibre laser for welding steel and aluminium

Verhaeghe G and Hilton P

Paper presented at 58th Annual Assembly and International Conference of International Institute of Welding, 14 – 15 July 2005, Prague, Czech Republic.

(2) Critical review of joining processes for powder metallurgy parts.

C. Selcuk, S. Bond and P. Woollin

Metallurgy, Corrosion & Surfacing Technology Group, TWI Ltd, Granta Park, Great Abington, Cambridge, CB21 6AL, UK. T: +44 (0) 1223 899 000, F: +44 (0) 1223 894 717.

Paper presented at Euro PM 2008 Congress and Exhibition, Mannheim, Germany, 29 Sept – 1 Oct 2008.

(3) Development of ultrasonic phased array inspection of polyethylene pipe joints

Mike Troughton, Malcolm Spicer and Fredrik Hagglund, TWI Ltd

Paper presented at PVP 2012 Pressure Vessel and Piping Conference, New Horizons in Pressure Vessel and Piping Technology. Toronto, Canada, 15-19 July 2012. Paper no. 78860.

Testing