Page 235 - Steam Turbines Design, Applications, and Rerating
P. 235
214 Chapter Eleven
2. The 15-nodal diameter mode of a 40-bladed disk can be excited by a
diaphragm containing either 15, 25, 55, 65, etc. nozzles.
11.8 Explaining Published Data by the Use
of Dresser-Rand’s SAFE Diagram
The usefulness of the SAFE diagram is demonstrated by published
results of other researchers. Data from the following two ASME publi-
cations have been used. The first one is F. L. Weaver and M. A. Prohl,
“High Frequency Vibration of Steam Turbine Buckets,” ASME Paper
No. 56-A-119, 1956. The second paper is G. E. Provenzale and M. W.
Skok, “A Cure for Steam Turbine Blade Failures,” ASME Paper No. 73-
Pet-17, 1973.
Figure 11.29 SAFE diagram corresponding to Campbell diagram given in
Figure 11.28. (Dresser-Rand Company, Wellsville, N.Y.)
