PLANT FOR FATIGUE TEST OF ANNULAR SPECIMENS OF MATERIALS Russian patent published in 2009 - IPC G01N3/32 

FIELD: testing equipment.

SUBSTANCE: invention refers to testing equipment, to strength tests. Plant for fatigue test of annular specimens of materials includes base, two plates installed on it and intended to be installed inside annular specimens, rotary drive connected to one of the plates, rotating platform with its swing drive and rotation axis perpendicular to rotation axes of plates and intended for arranging one of the plates, and mechanism for changing distance between axes of plates. At that, mechanism for changing distance between axes is made in the form of edge cam the rotated part of which is fixed on platform axis, mating part is installed in a movable way on platform axis and spring-loaded. At that, platform and its axis are installed with possibility of axial movement, rotated part of cam is attached to platform axis by means of fixture, and spring of cam mating part has compression control.

EFFECT: increasing amount of information by providing tests of annular specimens with adjustable ratio of forces of sliding friction and rolling friction at cyclic change of pressing load.

3 cl, 1 dwg