An experiment technology of turbine disc low cycle fatigue life(LCF) with additional torque was presented.A full-scale turbine disc test model with additional torque for an aero-engine turbine disc was fabricated and debugged

and then was tested for LCF.The test result was different remarkably from the former results on traditional method without torque

and directly validated the conclusion that torque affected LCF of dowel hole connecting disc and shaft.