Analysis Of Three Impeller Failures: Experimental Techniques Used To Establish Causes
Three first-stage impellers have failed in catalytic wet gas service. Two of the failed impellers were made of K-Monel material; the third was made of SAE 4330 material. In the first two cases, the structural integrity of the material was suspect. There was no question about the material in the third case. In all three cases, fatigue appeared to be the common mode of failure. This paper deals with the experimental techniques used in the field and laboratory to help qualify actual stress levels and identify the forcing function that resulted in fatigue.
Bultzo, Charles (1975). Analysis Of Three Impeller Failures: Experimental Techniques Used To Establish Causes. Texas A&M University. Gas Turbine Laboratories. Available electronically from