10 Non-Destructive Testing
Identify the 6 common NDT methods? correct answer Visual Inspection
Liquid Penetrant Testing
Magnetic Particle Inspection
Eddy Current Testing
Ultra-sonic Inspection,
Radiographic Inspection,
Can dye penetrate locate defects under the surface correct answer no only surface defects
Other than the above, what are three other disadvantages of a die penetrate NDT inspection?
correct answer 1. Rough or porous metals interfere with the test
2. Part preparation required. (removal of finishes and sealing)
3. High degree of cleanliness
Can a mag particle test detect sub surfaces discontinuities? correct answer Yes
Is mag particle good on rough surfaces? correct answer Rough surfaces interfere with test
What material can you use a magnetic particle test on? correct answer Ferro-magnetic
materials only
What must be done after a MP NDT? correct answer part must be demagnetised
Does a rough surface interfere with Eddy current NDT test? correct answer yes
What is surface treatment must be done of for liquid Penetrant Testing? correct answer It must
be thoroughly cleaned, free of contaminants and protective coatings
