Eddy Current Inspection : Detect Flaws In Conductive Materials

Non-destructive testing means exactly what it sounds like. It means testing materials, components and structures without damaging them. For example, you can conduct quality check test on a variety of metallic materials using eddy currents without damaging it in any way. This is very important to keep the material safe that you are testing because if you destroy the material you are testing, it does not do much good to test it in the first place. These tests are required to find out the defects that are not visible because paint or some other coating may cover them. Also, there might be some defects that are so tiny that they cannot be seen with our naked eyes or any other visual method of inspection. 

So, inspection methods like eddy current testing have been designed to detect the defects. NDT Eddy current inspections can examine the defect in large areas very quickly. In addition to finding defects, eddy current can also be utilized to test metal hardness and conductivity in applications where those properties are of interest, and to evaluate thin layers of nonconductive coatings like paint on metal parts. Due to its electric current method, eddy current testing is restricted to materials that has good electric conductivity and thus cannot be used on plastics.

Apart from this NDT eddy current inspection method, there is another popular testing method available for material testing which is known as MPI. Magnetic particle Inspection is a non-destructive testing process for inspecting surface and slightly subsurface defects in ferromagnetic materials like nickel, iron, cobalt, and some of their alloys. Basically, magnetic particle inspection and testing is a very simple concept. It can be categorized as a grouping of two nondestructive testing methods i.e. magnetic flux leakage testing and visual testing. These tests can be conducted on various materials such as construction and maintenance of pipelines, off - shore platforms, bridges, pressure vessels, aerospace vehicles, cranes tanks and tankers and power generation equipment. 

There are a lot of companies that are providing training and testing services for magnetic particle inspection and eddy current inspections. All these services are demanded in various oil industries, nuclear industries, refinery and petrochemical industries, aerospace industries and steel industries. If you are also looking for this kind of services for your material testing needs, this is the best place to find out the best solution. In just a couple of clicks you will be able to discover the best service provider for yourself that suits your specific requirements.

source : http://www.articlesbase.com/education-articles/detect-flaws-in-conductive-materials-with-ndt-eddy-current-inspection-6775885.html