Your project can obtain Shelmet's certified chemical and physical analysis upon request and also offer a variety of non destructive testing and inspection options, including:
- Magnetic Particle Inspection
Magnetic particle inspection is used to find surface and near surface flaws in ferromagnetic materials such as steel and iron.
The technique uses the principle that magnetic lines of force (flux) will be distorted by the presence of a flaw in a manner that will reveal its presence. The flaw (for example, a crack) is located from the "flux leakage," following the application of fine iron particles, to the area under examination. There are variations in the way the magnetic field is applied, but they are all dependent on the above principle.
The only inspection requirement is that the component being inspected must be made of a ferromagnetic material such as iron, nickel or cobalt, or some of their alloys. Ferromagnetic materials are materials that can be magnetized to a level that will allow the inspection to be effective.
- Fluorescent Penetrant Testing
Liquid penetrant testing is probably the most widely used non-destructive testing method. The test part is coated with a visible or fluorescent dye solution. The excess dye is removed from the surface, and then a developer is applied. The developer acts like a blotter and draws penetrant out of imperfections, which open to the surface. With fluorescent dyes, an ultraviolet lamp is used to make the "bleed out" fluoresce brightly, thus allowing the imperfection to be seen readily.
- Radiography X-Ray Testing
Radiography involves the use of penetrating X-rays or gamma radiation to examine parts and products for imperfections. An X-ray machine or radioactive isotope is used as a source of radiation. Radiation is directed through a part and onto film. When the film is developed, a shadowgraph is obtained that shows the internal soundness of a part. Possible imperfections show up as density changes in the film, in much the same manner that an X-ray can show broken bones.
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