Patent Document ID: 4805457
Application ID: 07054930
Patent Flag: 1

Claim One:
1. A process of testing a casing-enclosed shaft and impeller without removal of said shaft and impeller comprising the steps of: placing said casing-enclosed shaft and impeller in a static condition; suspending the casing-enclosed shaft and impeller in the casing; observing said suspended casing-enclosed shaft and impeller as suspended relative to said casing and noting the boundary conditions of said suspension; suspending a model of said shaft and impeller exterior of a casing and duplicating said observed boundary conditions of suspension: vibrating said model as suspended with said duplicated boundary conditions of suspension; simultaneous with said vibrating of said model reproducing suspected defects of said suspended casing-enclosed shaft and impeller on said model of said shaft and impeller; analyzing the vibrational signature of said model of said shaft and impeller and correlating said signature to said reproduced defects; vibrating said suspended casing-enclosed shaft and impeller without disassembly, analyzing the vibrational signature of said casing-enclosed shaft and impeller; and, correlating the vibrational signature of said model of said shaft and impeller to the vibrational signature of said suspended casing-enclosed shaft and impeller to determine the structural integrity of said suspended shaft and impeller.