Nondestructive Testing service providers

Here are some rarely used  NDT – Few Other Methods 1.   Eddy Current Testing – ET: Eddy-current inspection uses  electromagnetic induction  to detect flaws in  conductive  materials. A circular coil carrying current is placed in proximity to the test specimen (electrically conductive). The alternating current in the coil generates changing magnetic field which interacts with test specimen and generates eddy current. The  term eddy current  (also called Foucault currents) comes from analogous currents seen in   water  where localized areas of turbulence  known as eddies  give rise to persistent vortices. When alternating current is applied to the conductor, such as copper wire, a magnetic field develops in and around the conductor. Variations in the electrical conductivity or magnetic permeability of the test object, or the presence of any flaws, will cause a change in eddy current. A corresponding change in the phase ...

  Equipments and materials for NDT lab set up Radiography Testing: 1) X-Ray tube head -450 kV capacity ( only if construction of a exposure room with approval from government is possible) 2) RT Films (D4 ) 3) lead screen 0.125mm, 0.25 mm 4) Film casettes 5) set of IQI -wire type and hole type, ASTM standards and ISO standard, 6) Lead letters , alphabets and numbers 7) RT weld Film viewers (with intensity control ) 8) Set of developed films 9) Film Densitometer 10 ) Dark room set up for developing, with seperate tenks for Developer, Stoper, Fixer & Rinsing ( only if required) Computed Radiography: Phosphor plate with lead screens and casette CR Scanner and Computer Digital Radiography: Requires a Fixed Digital Radiography Machine Inbuilt X-Ray tube of capacity 150kV upto 400 kV Inbuilt sample positioning system Flat panel detector External control console Computer. ( There are local manufacturers for Digital XRay machine ) Magnetic Particle Testing (MPI): 1) MPI Electromagnetic ...