.Non - Destructive Testing is the Technology of assessing the Soundness and Acceptability of an actual component without affecting the functional properties of the component.
Non Destructive Testing Technique is the Technology in general.
Non Destructive Inspection is use of the Technology for inspecting materials to known standards.
Non Destructive Evaluation is the art of developing NDT Techniques, Arrivingat acceptance standard for components for which nothing is available to start with.
In simple words it is, TESTING A COMPONENT WITHOUT DESTRUCTION. by Definition NDT is the testing of materials, for surface or internal flaws or metallurgical conditions without interfering the integrity of the material or its suitability to future service.
The importance of NDT methods is reflected in preventing major failures and damages by early identification and detection of critical discontinuities in Raw material, during subsequnt processing and in service. This is similar to medical check up so as to prevent forthcoming diseases.
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