Metallurgical Engineering > GATE 2024 > Non-Destructive Testing
Which of the following statements is/are correct for non-destructive testing?
A
Liquid dye penetration technique can be utilized for detecting surface cracks.
B
In radiographic examination, internal cracks cannot be detected.
C
Eddy current-based techniques can be used for detecting sub-surface defects in pure alumina at room temperature.
D
Ultrasonic inspection is unsuitable for inspecting sub-surface defects in high damping capacity material (e.g., cast iron).

Correct : a,d

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