Every NDT method has its own advantages and disadvantages.
Some methods are more suitable for detection and evaluation of certain flaws than others. As product quality requirements vary, so do the inspection requirements. Size, location and orientation of material flaw that is acceptable in one industry does not necessarily imply acceptance in a different industry.
Product quality acceptance criteria are usually specified by industrial standards, in some cases national or international standards. Often, clients have their own customized requirements.
NDT method selections will depend on material tested, nature or type of defect, size, location, and inspection speed among others.
