‘Undercut’ or ‘burned out’ edges of the test piece film image are caused by:

Related MCQs

• ‘Undercut’ or ‘burned out’ edges of the test piece in film image can usually be reduced by:
• When using a straight beam technique to examine a thick test piece what change(s) would you expect to see in back wall echo size as you approach the side of the test piece? (Transducer remains completely on test piece)
• A 7.6 cm (3 inches) thick test specimen is radiographed with a source having size of 1.3 cm (1/2 inch), the film is placed in contact with the test specimen. The source to film distance is 40.6 cm (16 inches).The geometric unsharpness obtained is:
• ‘Film contrast’ is the inherent ability of a film to show for a given change in film exposure.
• A soft aluminium test piece is to be penetrant tested. The piece has previously been sand blasted to remove tightly adhering soils. What additional surface preparation should be performed?
• A low density image of the letter ‘B’ on a radiographic film would probably be caused by:
• A radiographic indication in a weld, characterised by two parallel dark lines in the film image, would probably be caused by:
• Indications which are caused by design or construction of the test piece are called?
• Loss of the test piece back wall echo during scanning may be caused by:
• When performing a post emulsifiable penetrant test, the test piece does not rinse acceptable clean during normal processing. What should be done?