FIELD: testing equipment.
SUBSTANCE: provide the thermomechanical cyclic loading of the cylindrical sample, one loading cycle of which includes the tension and compression semicycles and the intermediate unloading step. The tension and compression or compression and tension semicycles are carried out at the same loading speed and with receipt of the same sample deformation degree, and the intermediate unloading step is performed within the time insufficient to develop the weakening processes in the sample metal. The sample is made solid cylindrical with the working part, having the diameter drop through the transition areas. The ratio of the sample working part length and diameter is 1.0÷1.4.
EFFECT: provision of multiple cyclic impact by tension and compression or compression and tension with keeping the sample original shape and dimensions, excluding the deformation stability loss and the sample local destruction, increase of the testing results control accuracy.
5 cl, 1 tbl, 3 dwg
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