Eddy current separator is useful in situations such as: Separation of non-ferrous metals in auto shredder residue Separation of non-ferrous metals from solid waste incinerator ash Sorting of aluminum beverage cans from non-magnetic recyclables Removal of non-ferrous contamination from cru...
How are eddy currents not so useful When an AC current flows through a wire, much of the current is really flowing at the surface of the wire. This is commonly referred to asskin effect, but it's really caused by eddy currents. With AC current in a wire, the current alternates back ...
particular useful for the observation of rotating systems. The rotary encoder - coupled to a shaft - returns the angle or the rotational speed of the respective shaft. The TX-Driver synchronises the eddy current signal with the rotary encoder. This function is a premise for the module ...
This technique is particularly useful for study of the de Haas-van Alphen effect, in which K(H) oscillates with H , and the paper is mainly concerned with the effect of eddy currents on the relation between V(H) and K(H) and the practical implications for the use of the technique. ...
On the use of the magnetic vector potential in the finite-element analysis of three-dimensional eddy currents Various magnetic vector potential formulations for the eddy-current problem are reviewed. The uniqueness of the vector potential is given special attention... O Biro,K Preis - 《IEEE ...
A member movable in proximity to the inductor causes losses in the magnetic energy, which losses are directly related to the position of the member with respect to the coil. In another aspect of the invention, there is provided an inductor excited by an alternating current and a moving member...
Eddy current test is commonly employed for rapid thickness testing of coatings – conductive and non-conductive. The principle of eddy current test which measures the change in resistivity in the conductive material makes it useful in wide range of applications such as conductivity ...
1.A sensor for detecting surface defects of a metal tube, the sensor comprising a plurality of coils wound at a predetermined inclined angle, wherein the plurality of coils is inserted into the inside of a metal tube and an alternating current is applied to the coils to measure a change in...
The first is based on the analysis of the whole waveshape; the second starts from the harmonic composition of current curves. Each system is useful from a different point of view, and both achieve the same results. Experimental measurements confirm the theoretical assumption, i.e., that eddy-...
Eddy-current nondestructive testing is widely used to detect defects within a metal structure. It is also useful to characterize their location and shape provided that proper maps of variations of impedance that the defects induce are available. Imaging of void defects in the wall of a hollow, ...