Nondestructive Testing Methods

Accredited tests performed in our laboratory and in the field are defined below. Contact WTTI for further explanation or to discuss testing you require.

PT Inspection Performed using visible or fluorescent dye to flaws open to the surface. PT can be used on both non-ferrous and ferrous metals.
MT Inspection Detects surface and subsurface discontinuities in ferrous materials by applying a magnetic field and ferromagnetic powder.
VT Inspection Most commonly used NDT method. Requires minimal equipment and complete access to facilitate inspection.
UT Inspection Volumetric inspection method using ultrasonic waves. Requires direct contact with inspection area and can be done using straight beam, shear wave, or as thickness measurements.
RT Inspection Volumetric inspection method using radiation. WTTI’s enclosed X-ray cabinet is 44” deep x 51” wide x 56’’ high. Steel specimens up to 3” thick and aluminum specimens up to 12” thick can be examined. WTTI can produce film or digital x-ray images.
Certified Welding Inspection Performed and qualified in accordance with American Welding Society codes and standards.

Common QA/QC services include:

  • Contract and drawing review prior to beginning work
  • Examination prior to fabrication
  • Examination during in-process fabrication
  • Examination post-fabrication
  • Examination following secondary processing e.g. machining, heat treating, grinding, plating, etc.
  • Examination for in-service damage e.g. cracking, wear, heat damage, corrosion, etc.

Mechanical Testing Lab Services

Mechanical Test Methods

Nondestructive Testing Lab Services


Test Submittal

Lab Accreditations