Industry Leaders in Non-Destructive Testing, Metallurgy & NDT Calibrations

Liquid Penetrant

Liquid penetrant inspection is appropriate for finding discontinuities that are open to the surface, such as cracks, laps, and seams. It is a very popular method because of its low cost and portability. It can be used on a wide variety of materials, as well as various sizes and shapes. The dye is capable of entering very small defects that would not be detectable by the human eye alone.

Defects that can be found with liquid penetrant inspection include:

  • Fatigue Cracks
  • Grinding Cracks
  • Heat Treat Cracks
  • Stress Corrosion Cracks
  • Porosity
  • Laps
  • Seams
  • Stringers
  • Star Cracks
  • Lack of Fusion
  • Gas Holes
  • Cold Shuts
  • Micro Shrinkage

At American Testing Services we are capable of performing both fluorescent and visible dye inspection methods. We use water washable and post-emulsified applications. We are able to accommodate parts weighing up to 5,000 pounds in our lab. In the field, we are able to inspect parts of unlimited weight and size.