...Behrooz Farshi; Jalal Bidabadi Gas turbine disks are subject to mechanical stresses due to centrifugal forces exerted by the blades, as well as thermal stresses due to high temperature gradient. High stresses in the presence of elevated temperatures cause the rotating disk material to undergo...

...Calvin M. Stewart; Ali P. Gordon; Young Wha Ma; Richard W. Neu Directionally solidified (DS) Ni-base superalloys are commonly used as gas turbine materials to primarily extend the operational lives of components under high load and temperature. The nature of DS superalloy grain structure...

... ) (tri-axial) stress formulation introduces tensile/compressive asymmetry to the model. This allows compressive loading to be considered for compression loaded gas turbine components such as transition pieces. A new dominant deformation approach is provided to predict the dominant creep mode over time...

...Fred V. Ellis A metallurgical failure analysis was performed for the stage 17 gas turbine rotating blade and stationary vane. Four pieces, including the failed rotating and stationary blades, were removed from the air-compressor section of a gas turbine. The damaged components were found during...

...Frantisek L. Eisinger, Mem. ASME; Robert E. Sullivan, Mem. ASME Thermoacoustic combustion oscillation and vibration experienced in a gas turbine at operation is reported. The oscillation manifested itself at two distinct frequencies representing the first and second mode frequencies of the combined...