Saturday, July 25, 2009

NDT - Non Destructive Testing

NDT – Non Destructive Testing is noninvasive techniques to determine the integrity of a material, component or structure or quantitatively measure some characteristic of an object. In contrast to destructive testing, NDT is an assessment without doing harm, stress or destroying the test object. The destruction of the test object usually makes destructive testing more costly and it also inappropriate in many circumstances.

NDT plays a crucial role in ensuring cost effective operation, safety and reliability of plant, with resultant benefit to the community. NDT is used in a wide range of industrial areas and is used at almost any stage in the production or life cycle of many components. The mainstream applications are in aerospace, power generation, automotive, railway, petrochemical and pipeline markets. NDT of welds is one of the most used applications. Is very difficult to weld or mould a solid object that has no risk of breaking in service, so testing at manufacture and during use is often essential.

NDT is vital for constructing and maintaining all types of components and structures. To detect different discontinuities or defects such as cracking and corrosion, there are different methods of testing or inspection available. The common
NDT products and methods are like Ultrasonic Testing, (UT), Radiographic Testing (RT) using X-Ray or Gamma-Ray, Magnetic Particle Inspection (MPI), Eddy Current Testing (ET), Dye Penetrant (DP), Remote Visual Inspection (RVI) etc.


Sample of applications:



No comments:

Post a Comment