Thermal Fatigue Testing of Simulated Turbine Blades Lewis Research Center, NASA

Format:

Conference/Event

Author/Creator:

Spera, D. A., author.

Conference Name:

National Air Transportation Meeting (1971-05-10 : Atlanta, Georgia, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1971

Summary:

Simulated turbine blades were subjected to transient and steady-state heating and spanwise loading in a Mach 1 burner rig. Leading-edge cracks were produced which were similar to thermal-fatigue cracks observed during engine service. Crack initiation and propagation data were obtained for a variety of test conditions.The simulated turbine blades consisted of coated and uncoated IN 100 and B 1900 cambered airfoils with grips for application of spanwise load to simulate centrifugal stress. Test variables were blade temperature, spanwise load, and steady-state (hold) time. The Mach 1 gas velocity substantially reduced conventional creep rupture life. This caused a substantial reduction in thermal fatigue life. Coating effectiveness was below that for low velocity tests

Notes:

Vendor supplied data

Publisher Number:

710459

Access Restriction:

Restricted for use by site license