Magnetic Particle Testing (MT)

Magnetic Particle Testing (MT) is a nondestructive testing method which is used to inspect ferromagnetic materials for cracks. It is an aided visual method where the inspector observes the part and uses colorful magnetic particles to bring out any defects and make them more easily seen. Once the test part is magnetized, colorful iron filings called magnetic particles are blown onto the inspection area. When there is a surface breaking or slightly subsurface crack or defect, it produces magnetic leakage which produces a stronger magnetic field that the area around it, thus attracting the magnetic particles and creating an indication which can easily be observed. This method requires that the test surface be clean and free of loose scale, dirt, and loose paint. Non magnetic surface coatings less than 3 mils dont typicaly hinder the sensitivity of a magnetic particle test, however when coatings exceed 3 mils, it must be either proven that rejectable defects can be found through the coating or the coating must be removed around the inspection area.

Our NDT Service Area

We perform Magnetic Particle Testing all across the United States (USA) so wherever you are located, please feel free to contact us. We can most readily serve the New England States. We provide MT services in Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and Rhode Island. Please contact us about your Magnetic Particle Inspection requirments.