Non-Destructive Testing (NDT) could be a wide cluster of study techniques utilized in science and trade to judge the properties of a cloth, part or system while not inflicting injury, as a result NDT doesn’t for good alter the article being inspected, it’s an extremely valuable technique that may save each cash and time in product analysis, troubleshooting, and analysis. By definition, non-destructive testing is that the testing of materials, for surface or internal flaws or scientific discipline condition, while not busy bodied with the integrity of the fabric or its suitableness for service. A certain degree of ability is needed to use the techniques properly so as to get the most quantity of data regarding the merchandise, with resultant feedback to the assembly facility. Non-destructive Testing isn’t simply a technique for rejecting substandard material; it’s conjointly associate assurance that the purportedly sensible is nice. The technique uses a range of principles there’s no single methodology around that a recorder could also be engineered to satisfy all needs altogether circumstances.

Keywords : NDT, UPV, Rebound Hammer, Retrofitting.