Magnetic Particle Testing / Penetrant Testing

Crack on a casting component caused by magnetic particle testing

Surface Inspection Solutions for Different Materials

Magnetic Particle Testing (MT)

Magnetic Particle Testing (MT) also known as Magnetic Particle Inspection (MPI) is a very fast and reliable method of inspection of ferrous (magnetic) materials used in casting, fabrication, machining, and welding. MT can detect indications on the surface and near the surface. Indications such as cracks, hot tears in castings, and other discontinuities are easily detected and interpreted by a certified technician.

There are two primary types of Magnetic Particle Testing (MT):

  • 1 Dry Visible Method
  • 2 Wet Fluorescent Method

 
CTC provides both types of methods in the field and in the laboratory. For the field, Magnetic Particle Testing (MT) is primarily performed using MT Yokes with AC/DC Current Capabilities and both Dry Visible Powder and Wet Fluorescent Methods are available. In the laboratory, we provide wet stationary Three-Phase Full-Wave Rectified Magnetic Particle Testing as well as yokes, cable wrap, and mobile units.

Surface Inspection Solutions for Different Materials

Magnetic Particle Testing (MT)

Magnetic Particle Testing (MT) also known as Magnetic Particle Inspection (MPI) is a very fast and reliable method of inspection of ferrous (magnetic) materials used in casting, fabrication, machining, and welding. MT can detect indications on the surface and near the surface. Indications such as cracks, hot tears in castings, and other discontinuities are easily detected and interpreted by a certified technician.

There are two primary types of Magnetic Particle Testing (MT):

  • 1 Dry Visible Method
  • 2 Wet Fluorescent Method

 
CTC provides both types of methods in the field and in the laboratory. For the field, Magnetic Particle Testing (MT) is primarily performed using MT Yokes with AC/DC Current Capabilities and both Dry Visible Powder and Wet Fluorescent Methods are available. In the laboratory, we provide wet stationary Three-Phase Full-Wave Rectified Magnetic Particle Testing as well as yokes, cable wrap, and mobile units.

Penetrant Testing (PT)

Penetrant Testing (PT) also known as Liquid Penetrant Inspection (LPI) is a fast and reliable surface inspection method. The penetrant can be used on most nonporous surfaces with certain conditional restrictions, such as temperature and contamination. There are two primary types, as in MT, they are Visible and Fluorescent Methods. In addition to the type, there are methods within the specification:

  • 1 Type 1: Methods, A, B, and C

Method A: Water Washable
Method B: Post Emulsified
Method C: Solvent Removable
Depending on the material, service, condition of the parts, type of application, and the specifications for the inspection, these will determine the type and method of the penetrant inspection. PT will detect most indications such as cracks, seams, surface porosity, and other surface abnormalities. It takes a certified technician to determine the disposition of the inspection.