FIELD: test.
SUBSTANCE: invention relates to the field of test equipment and can be used to obtain information on change of electromagnetic properties of metal samples during their mechanical tests, for example, tension or degree of fatigue during cyclic loads. Flat metal sample for mechanical tests is made in the form of elongated rectangular working part and heads located on its ends, with dielectric plates fixed on their surfaces, intended for gripping by clamps of testing machine. Each of heads on part of its length is made with ledges serving as contact pads for electrical connection of sample with current wires of current source of electric potential signal measuring unit, which exceed width of test machine clamps.
EFFECT: technical result of present invention consists in reduction of measurement error of specific electric resistance of sample during its mechanical tests.
1 cl, 2 dwg
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