Replication and Demonstration of Thermal Mechanical Fatigue on Gas Turbine Engine Rotors in a Spin Test Environemnt

Test Devices proposes a program to develop and demonstrate a capability that imposes a radial temperature distribution as well as the centrifugal load on turbine engine disks in a spin test environment. This capability will simulate operating strain histories, i.e. thermal-mechanical fatigue (TMF), the results of which will permit more realistic service life predictions. The first phase involves demonstrating the feasibility of TMF in a spin rig by applying a constant temperature gradient across the test article. Phase 2 involves a technological step up with the inclusion of a cooled arbor and the acquisition and implementation of a quartz oven for high heat flux for accurate control of a real-world variable temperature distribution. The use of such a facility will provide a more accurate simulation of rotor operation to establish reliable service life and maintenance schedules for gas turbine components. The capability will directly contribute to the Durability initiatives of the VAATE program. Additionally, the capability would support the industry desire for more accurate physical testing as a prelude to eventual virtual testing. TDI has a demonstrated history of developing advanced spin pit technology and is thus well qualified to conduct this program.