Dye penetrant testing is one among the popular methods of conducting non-destructive testing or popularly known as NDT. NDT is a process conducted to invest, test or evaluate components, assemblies or materials for any snags, discontinuities or a difference in characteristics without destroying its normal serviceability and functionality. In short, this kind of testing never harms the material being tested in any way. That being the major plus point of the NDT testing methods, makes it the most convenient and cheapest way of testing various surfaces.
Dye penetrant inspection also called as liquid penetration testing is a low-cost and widely opted method, popularly used to inspect and locate surface breaking defects including cracks, voids that pass from one surface to another in non-porous materials like metals, plastics or ceramics.
Principal
The primary principle working behind the dye penetrant testing is when a highly fluid liquid or liquid with very low viscosity is applied to the part of the surface to be tested and allowed to rest, the liquid easily penetrates into the cracks, voids or holes present on the surface. Afterward, the excess penetrant is removed carefully, the penetrant contained in the voids and holes flows back, creating indication marks on the faulty surface. Now the white developer is applied on the parts to make them visible under ambient or fluorescent lights.
This type of testing is suitable for ferrous and nonferrous metals and has application in several prominent fields in the world of industrial engineering to ensure high quality, reliability and durability of the products manufactured.
This method is used in several high quality and sophisticated equipments like pressure vessels, cranes, tankers, aerospace vehicles, bridges and power generation equipments. Being a niche domain, doing dye penetrant testing course can give you the opportunity to build your career in several lucrative industries like Aerospace, Ship Building, Oil, Refinery and Petrochemical, Steel and Nuclear Industry among others. It is also considered one of the courses where you can easily get an opportunity to work overseas on the working sites.
If you are the one confused to chose from the list of NDT certification courses offered at present; dye penetrating testing offers a very lucrative future career prospects as the need for the above mentioned equipments and aerospace and marine vehicles is bound to increase along with the growth of world economy in the near future.
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