FIELD: conducting tests for strength. SUBSTANCE: test set has force exciters 2 with grips 3 for specimen 4, hydraulic cylinders 5 and 6 with rod 7, bellows 9 and 10 with liquid 11 and gas 12 and drive. Stiffness of loading is regulated by level of liquid in bellows. EFFECT: extended functional capabilities due to possibility of conducting the tests both at constant and varying stiffness of loading. 2 cl, 1 dwg
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