General - AM.I.K.K3 - Nondestructive Testing (NDT) procedures and methods

Question 1

What is the proper type of nondestructive inspection to use for locating surface cracks in an aluminium allow casting or forging?

Answer 1

Fluorescent or visual dye penetrant

Question 2

What is the principle upon which ultrasonic inspection is based?

Answer 2

Any fault within a material will change the material’s resonant frequency. Comparing the resonant frequency of a known sound material with the material under test will indicate the presence of a fault

Question 3

What is the procedure when making a dye penetrant inspection of a part?

Answer 3

Clean the part thoroughly, apply the penetrant, and allow it to soak for the recommended dwell time. Remove all of the penetrant from the surface and apply the developer