FIELD: investigating strength properties of solid materials. SUBSTANCE: test machine has grips 3,4 for specimens 5, latches 11,12,13,7, hydraulic cylinders 2,14 with pistons 10,15, cams 8 with driving actuator 17. Alternate load is performed by cams 8 when latches 12 are "on". When latches 11,13 are "on ", and latch 12 is "off", there occur unloading. Energy liberation process is recorded by sensor 16 by movement of piston 15. EFFECT: enlarged functional capabilities. 2 dwg
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