FIELD: testing technology. SUBSTANCE: test set has levers 3 and 4 with grip 5 for specimen 6, limiters 7 and 8, stops 11 and 12 with device for disengaging the stops from the lever and drive 15 for reciprocating motion. Drive 15 oscillates levers 3 and 4 by means of stops 11 and 12 and delivers impacts to limiters 7 and 8 by specimen 6. When device is engaged in due time, impacts are delivered to one stop and become constant. Test set is used for testing the specimens of various materials. EFFECT: conducting tests at alternating and constant bending loads accompanied by adjustment of impact force in course of loading. 2 dwg
