banner-dye
CONVENTIONAL NDT

Dye Penetrant Testing (PT)

Dye Penetrant testing (PT) is used to reveal emerging surface defects such as cracks on the surface of all non-porous materials. PT detects cracks, chips, porosity, pitting, etc. on parts at different stages of manufacturing, during preparation for welding and during welding. PT detects metal fatigue (fatigue cracks), pitting & etc. on installations in service.

Our Strengths

Personnel​
  • ASNT/CSWIP/PCN/ISO9712 qualified personnel
  • Continuous in-house training & competency monitoring
  • Vast experience in various industry
ADVANTAGES OF

PT

  • High sensitivity to small surface discontinuities
  • Suitable for large range of materials: metallic and non-metallic, magnetic and non-magnetic, and conductive and non-conductive
  • Large surface areas and large volumes parts can be inspected rapidly and at low cost
  • Parts with complex geometry can be tested without changing the inspection procedure
  • Indications are produced directly on the surface of the part
  • Aerosol spray cans make penetrant materials very portable
  • Required materials and equipment are relatively inexpensive
dye01
dye02
LIMITATIONS OF

PT

  • Only surface breaking defects can be detected
  • Only materials with relatively nonporous surface can be inspected
  • Precleaning is critical
  • Metal smearing from machining, grinding, and grit or vapor blasting must be removed prior to inspection.
  • Surface finish and roughness can affect inspection sensitivity
  • Multiple process operations must be performed with waiting intervals
  • Post cleaning of acceptable parts or materials is required
  • Handling and proper disposal of chemicals is required
Close Menu
×