METHOD OF TESTING STRENGTH OF TURBOMACHINE VANED DISC WITH FORK JOINT Russian patent published in 2016 - IPC G01M13/00 G01N3/32 

FIELD: machine building.

SUBSTANCE: invention relates to methods of determining strength of blade discs of turbomachine with fork-type connection. Method consists in creation of working conditions of loading simultaneously in three upper mounting holes of elements of wheel rim. Loading device is placed in the test machine grips forming a load, wheel rim element is fixed in the loading device, load is applied from the testing machine to the fixing hole of wheel rim element. Loading device is installed in grips of biaxial test machine, a load of test machine through a loading device is applied to two attachment holes of wheel rim element and load is distributed simultaneously on three upper mounting hole of wheel rim element, each forming a given force S, equal by value and direction to the centrifugal force of blades, at that horizontal F_G and vertical F_B stretching forces set by the biaxial test machine are defined by equations.

EFFECT: technical result consists in possibility of modelling during bench tests of loading operating conditions and level of damage in critical zones of turbomachine discs.

1 cl, 1 dwg