Accession Number : ADD008781
Title : Method of Enhancing Rotor Bore Cyclic Life.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Personal Author(s) : Brisken,Thomas A
Report Date : 03 Jun 1981
Pagination or Media Count : 13
Abstract : This invention relates to a method of enhancing or prolonging the low cycle fatigue life of te bore area of a rotating disk. The method comprises the step of prestressing the bore area by heating the web/rim area of the disk, while moderately overspeeding the disk. The heating can be accomplished with the use of induction heating coils which are disposed adjacent the web/rim area of the disk. This method, unlike prior art prestressing methods, is simple to perform, is cost effective, and does not compromise the disk or the design of the assembly of which the disk is a component.
Descriptors : *Patent applications, *Bores, *Prestressing, *Induction heating, Fatigue life, Optimization, Residual stress, Compressive properties, Rotors, Holes(Openings), Thermal stresses, Disks, Rotation, High velocity, Gas turbines, Life expectancy, High temperature
Subject Categories : Mfg & Industrial Eng & Control of Product Sys
Jet and Gas Turbine Engines
Distribution Statement : APPROVED FOR PUBLIC RELEASE