NDT Method Classes
- UT (Ultrasonic Testing) 80 Hr class
-Pulse echo, thru transmission, resonance-
Ultrasonic testing gives information about subsurface
as well as surface conditions. Longitudinal, shear and surface waves can be produced. It will determine material thickness, the presence of a defect or the characteristics of a material.
- MT (Magnetic Particle Testing) 24 Hr class
-Fluorescent, dry-
Magnetic Particle testing gives information about surface and near surface condtions, it is used primarily to locate surface cracks and is especially useful for locating fatigue cracks in ferromagnetic materials.
- PT (Liquid Penetrant Testing) 16 Hr class
-Fluorescent, visible dye-
Penetant testing gives information about surface conditions only and is used to locate surface defects in magnetic and nonmagnetic materials like aluminum, some stainless steels, titanium and some nonmetals.
- VT (Visual testing) or
- AWS CWI (Certified Welding Inspector)
- 16 Hr class
Visual testing gives information about the surface condition of a material, is used to evaluate weld quality and can be used with visual aids such as a borescope which magnifies the object, takes still images and measurements with special tips also flashlights and mirrors can be used.