Surface breaking porosity will show what type of relevant indications when a welded aluminium plate is tested with the liquid penetrant method:

Related MCQs

• Cracks, lack of penetration, lack of fusion which are surface breaking on a welded aluminium plate which has been liquid penetrant tested will show as:
• Fluorescent penetrant indications are more visible than colour contrast penetrant indications because:
• 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?
• When using a post emulsifiable penetrant process, it is important to drain as much excess penetrant as possible from the surface of a test piece which has been immersed in the penetrant because:
• A group of indications, some sharp and some broad and fuzzy, were found on an area of a small forging. Demagnetization and re-inspection eliminated these indications. What was the probable cause?
• Dark rounded indications with rather smooth edges appear on the radiograph of casting made in sand mould. These indications would be interpreted as:
• Which type of developer does not (!) provide a contrasting background against which to view penetrant indications?
• What additional surface preparation or cleaning must be performed on a machined or ground aluminium casting prior to penetrant testing?
• How will the excess surface penetrant be removed if a post emulsified penetrant was used:
• Liquid penetrants can be further categorised by the removal method of excess surface penetrant: