Based on the weld simulation parameters, a parametric study of weld simulation was performed to demonstrate and understand the effectiveness of individual simulation parameters on heat and fluid flow in the molten weld pool and the final configuration of stationary welds.
In radiography testing the test-part is placed between the radiation source and film (or detector) the material density and thickness differences of the test-part will attenuate (ie reduce) the penetrating radiation through interaction processes involving scattering and/or absorption. Radiographic testing (rt) – this method of weld testing makes use of x-rays, produced by an x-ray tube, or gamma rays, produced by a radioactive isotope the basic principle of radiographic inspection of welds is the same as that for medical radiography.
When specifying random radiography, the owner should realize that there is potential for significant discontinuities to exist in welds that were not radiographed to maximize the effectiveness of percentage radiography, it must be performed contemporaneously with welding. Iso 10675-1, non-destructive testing of welds – acceptance levels for radiographic testing – part 1: steel, nickel, titanium and their alloys iso 11699-1, non-destructive testing – industrial radiographic films – part 1: classification of film systems for industrial radiography.
Radiograph interpretation - welds in addition to producing high quality radiographs, the radiographer must also be skilled in radiographic interpretation interpretation of radiographs takes place in three basic steps: (1) detection, (2) interpretation, and (3) evaluation.
Systematic radiographic technical evaluation is an important aspect to evaluative, effective radiography it is the process of assessing a radiographic image to ensure it meets a high level of diagnostic standard two mnemonics are commonly used.