УСТРОЙСТВО ДЛЯ ИСПЫТАНИЯ МАТЕРИАЛА НА УСТАЛОСТНУЮ ПРОЧНОСТЬ

摘要

FIELD: the invention refers to testing technique particularly to arrangements for testing of materials on fatigue durability at cyclic bending and twisting of a sample. ^ SUBSTANCE: the arrangement has a bed, and installed on it a right spindle mandrel and a left spindle mandrel with an electric motor. On mandrels there are grippers fastened for clamping of the tested sample of material. At that it has an arrangement for creation of alternate twisting moment in the tested sample of material consisting of Hook's joint whose one output is firmly connected with a mechanism for creating cyclic bending strains and the other output is connected with the fastener of the right spindle mandrel which is fulfilled with possibility of travel for creating required alternate twisting moment. The spindle of the right mandrel is kinematically connected with an additional electric motor creating the required twisting moment. The additional electric motor of the right spindle mandrel and the electric motor of the left spindle mandrel are electrically connected between themselves with the aid of a control block. The Hook's joint may be double. ^ EFFECT: expands functional possibilities of the arrangement for testing samples on fatigue durability at bending with twisting due to creation of an alternate twisting moment during the cycle. ^ 1 cl, 1 dwg