Page 232 - Welding of Aluminium and its Alloys
P. 232
212 The welding of aluminium and its alloys
Source of radiation
Cavity
Image of Weld
cavity on film
Film
Intensifying screens
Anti-back-scatter backing
11.14 Principles of radiographic examination of a weld. Courtesy of
TWI Ltd.
(a)
(b)
11.15 Radiograph of aluminium welds.
(a) Longitudinal cracking at the weld start. Close square TIG butt weld
in 7000 series alloy. (b) Gross porosity in TIG butt weld in 4000 series
alloy.
