FIELD: testing equipment. SUBSTANCE: proposed bench includes frame, first hinge unit intended for mounting of sample on frame for bending in specified plane, second hinge unit linked to second end of sample for bending in specified plane, aid for static tension of sample, compensator of change of axial load with bending of sample and vibration exciter. Compensator is manufactured in the form of torsion bar anchored on frame perpendicular to plane of bending of sample and lever whose rotation support is fixed in frame in plane of bending of sample perpendicular to this plane and is made fast to torsion bar. Arm of lever is linked to second hinge unit of fixing of sample. EFFECT: widened range of amplitudes of vibrations of sample under specified axial loading and exclusion of influence of compensator on loading conditions. 3 dwg
