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Inhomogeneity detector for testing magnetic material - combines source of flux with detector for passing along surface of material under test
Inhomogeneity detector for testing magnetic material - combines source of flux with detector for passing along surface of material under test
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机译:用于测试磁性材料的不均匀性检测器-将通量源与检测器结合使用,以沿着被测材料的表面通过
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摘要
A version of the instrument for testing materials, e.g. steel sheets, which have a flat surface has two cobalt samarium permanent magnets (1,2) separated by a steel pole piece (3). The outer ends of the magnets are in contact with pole shoes (4,5) which conduct the flux to their lower flat faces. Between the steel pole piece and a coupling piece (10) is a detector (9) which may be a Hall effect device or a coil. The flux is conducted between the pole pieces (4,5) through the nylon tray (11) which holds the assembly toqether, and through the surface of the material under test (7). Another version designed for testing steel rods has several such assemblies arranged radially around a cylindrical sleeve.
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