Question

Which the following is/are the demerit of NDT method?
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Answer 1

Answer : Disadvantages of the penetrant method of Non-Destructive Examination are: Can only detect defects open to the surface. Preparation, before testing, can be time consuming and costly. The method takes time and can rarely be completed in less than 30 minutes.

Answer 2

Explanation:

Non-destructive testing's drawbacks are few and far between.These can be simple things such as:

• Cleaning components both before and after examination
• The polish of a component can occasionally impair inspection sensitivity.
• There may be a lack of depth scaling on occasion.
• Some tests necessitate the use of electricity.
• Variations in magnetic permeability can also have an impact on some.
• Some tests are only effective on conductivematerials.

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