From NDT Technologies
Eddy current inspection of industrial machining processes has evolved over the past several decades to the point where it is now a well understood and effectively used technology capable of making a positive and consistent impact on quality assurance - but it can do more. While eddy current is used to inspect for cracks in machined surfaces, voids in castings, thread prescence and quality, hardness differences, chemistry changes, surface roughness, thickness variations and part runout, there is a little used aspect of its capability - part profiling. Part profiling is the review of the eddy current characteristic of a part with respect to the position variable. In a profiling application, either a dual- or single-element eddy current sensor is passed over the surface of the part and its position, with respect to that part is measured with a linear displacement device such as a linear potentiometer or a linear variable differential transformer (LVDT).
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Our cleanroom houses an array of custom designed system integrated metrology devices. Our cleanroom facility contains LVDT fulcrum beam measuring systems for high volume measuring of micron...
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Topics of Interest
Eddy current testing provides an analog means of evaluating mechanical parts. It is not a go/no-go gauge, but a proportional means of reviewing the characteristics of machined components. Although a...
Eddy current testing was pioneered in the 1800s by David Edward Hughes (1830-1900), an American inventor who discovered that a coil of wire carrying an alternating current was affected by any...
The pistol on the right was profiled with both non-contact and contact eddy current inspection techniques to determine the characteristics of the inside on its bore. A Ball Runner profiling probe was...
Eddy current, penetrating radar and other electromagnetic techniques used to detect or measure flaws, bond or weld integrity, thickness, electrical conductivity, detect the presence of rebar or...
Eddy current, ground penetrating radar (GPR), and other electromagnetic NDT testing techniques used to detect or measure flaws, bond or weld integrity, thickness, electrical conductivity, detect the...
