FATIGUE STRENGTH TEST BENCH FOR MEMBERS OF STRUCTURES Russian patent published in 2012 - IPC G01N3/32 

FIELD: machine building.

SUBSTANCE: bench includes in-series connected load setting device, loading device, clamping device, temperature sensor, temperature recording unit, loading parameter recording unit and loading parameter fixing units when the specified allowable self-heating temperature rise is achieved at the step-by-step increasing load, and time delay and loading trip unit. In addition, the bench is equipped with the unit determining the mass of each tested member, unit for determining resonance frequencies and amplitudes of oscillations of each member at the specified constant loading force, unit for determining the parameters of dynamic stiffness of each tested member and its corrected amplitude of oscillations or deformation providing equal loading of tested members at each loading stage, which are transmitted to load setting unit. Mass determining unit and unit for determining resonance frequencies and amplitudes of oscillations are connected to the unit for determining dynamic stiffness parameters and to the fixing device which is located on the loading device. Output of dynamic stiffness parameter determining unit is connected to the load setting device.

EFFECT: improving accuracy and correctness of comparison of strength characteristics of similar structural members at cyclic loads.

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