Jason P Foley

US Patent:

20200200011, Jun 25, 2020

Filed:

Jun 12, 2018

Appl. No.:

16/622346

Inventors:

- München, DE
Johnny Whiddon - Cypress TX, US
Mohammad Reza Khajavi - Mount Vernon OH, US
Jason Foley - Delaware OH, US

International Classification:

F01D 5/00
B23P 6/00
G01N 25/72

Abstract:

A repair method () for extending a service life of a power turbine disk () having corrosion damage, wherein the power turbine () includes stages () and interstage gaps (). The method () includes conducting a first thermal analysis () of a baseline configuration of a baseline disk that does not have corrosion to determine a first steady state temperature distribution (). A corrosion damaged disk () is then machined () to a depth suitable for repairing the corrosion to form a machined disk. A second thermal analysis () of the machined disk is conducted to determine a second steady state temperature distribution of the machined disk. A first predicted safe cyclic life (PSCL) () is then calculated for disk axisymmetric features (-) of the machined disk. A second PSCL () is also calculated for disk firtree features () of the machined disk. Further, the method () is qualified () to ensure that the quality of the machined disk is consistent with a new disk.