Installation for fatigue testing of flat samples in pure bending

摘要

The invention relates to mechanical engineering, to test the art: to devices for fatigue test specimens flat during bending. The installation comprises a fixed base with a test sample thereon, a crank mechanism, which lever is pivotally connected to a rod mounted with a device for transmitting it to the sample load, arranged to regulate its position relative to the rod. The device is designed as a disc, which has circumferentially bifurcated lugs in openings which are located with the fingers mounted thereon pivotally mounts the upper sample. The lower end portions of the samples are fixed in their respective mounting sites, which are rotatably mounted on the fingers of the claw lugs mounted on the base of the unit. The axes of rotation of the sample mount assemblies are parallel to each other and the plane passing through the axis of rotation parallel to the working surfaces of the sample at the starting position of the sample set in an unloaded condition. Technical result: the ability to simultaneously test multiple flat specimens for fatigue in pure bending. 2 yl.