Domestic object damage investigations on turbine blade material

Domestic Object Damage (DOD) is a problem, especially for compressor and turbine sections of jet engines. To investigate the influence on the performance and service life of the impacted components, well defined DOD impacts in the laboratory have been performed with consecutive metallurgical investigations and fatigue testing. The paper describes the efforts to upgrade the existing flat coil accelerator at the Fachgebiet Raumfahrttechnik (lrt) to the needs of the DOD tests and documents the experiment set up. Particles were shot on ideal flat specimens of Titanium Aluminides (γ-TiAl based alloys) under realistic service conditions simulating stress and/or temperature of the target. First experimental results are discussed.