FIELD: strength tests. SUBSTANCE: force is applied to test specimen 5 through force exciters 2 and 3 by means of respective hydraulic cylinders 7 with pistons 10 and holes 13 and 14. The holes are made for alternate communication with hole 9 in rod 8. As a result of displacement of pistons 10, pressure is built up, which is supplied at communication of hole 14 with hole 9. EFFECT: facilitated test procedure. 1 dwg
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