FIELD: measurement technology. SUBSTANCE: stuck-on eddy current transducer for non-destructive inspection has a rod-type magnetic core and axial excitation and measuring windings disposed on the magnetic core. The excitation winding is composed of two in series oppositely connected sections one of which is circumscribed by a concentric shielding winding closed by a variable resistor. The measuring winding is interposed between the excitation winding sections and is made disk-shaped to provide contact-free measuring of parameters of interest. The transducer is particularly useful for measuring mechanic stresses, electric conductivity, hardness and other parameters when preparing the surface of material is undesirable. EFFECT: enhanced accuracy. 2 dwg
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EDDY-CURRENT CONVERTER FOR NON-DESTRUCTING CONTROL OF PARAMETERS OF MATERIALS | 1992 |
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METHOD OF NONDESTRUCTIVE TESTING OF ELECTROMAGNETIC, PHYSICAL AND CHEMICAL PARAMETERS OF FERROMAGNETIC MATERIALS AND DEVICE TO IMPLEMENT IT | 0 |
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0 |
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Authors
Dates
1994-04-15—Published
1992-07-03—Filed