Methods for monitoring turbine components

Patent metadata

Field	Value
Publication number	US-2017176291-A1
Application number	US-201514972202-A
Country	US
Kind code	A1
Filing date	Dec 17, 2015
Priority date	Dec 17, 2015
Publication date	Jun 22, 2017
Grant date	—

Abstract

Methods for monitoring a components include locating a plurality of machined surface features on the component, locating at least one reference point, and measuring a plurality of first distances between the plurality of machined surface features and the at least one reference point.

First claim

What is claimed is:

1 . A method for monitoring a component, the method comprising:
locating a plurality of machined surface features on the component; locating at least one reference point; and, measuring a plurality of first distances between the plurality of machined surface features and the at least one reference point.

2 . The method of claim 1 , further comprising:
locating the plurality of machined surface features on the component at a second point in time; locating the at least one reference point at the second point in time; measuring a plurality of second distances between the plurality of machined surface features and the at least one reference point at the second point in time; and, comparing the plurality of first distances to the plurality of second distances to determine a strain analysis.

3 . The method of claim 2 , further comprising continuing to utilize the component based on the strain analysis.

4 . The method of claim 2 , wherein comparing the plurality of second distances to the plurality of first distances comprises producing a strain map illustrating changes in distances.

5 . The method of claim 1 , wherein at least one of the machined surface features comprises a cooling hole.

6 . The method of claim 1 , wherein at least one of the machined surface features comprises a component contour.

7 . The method of claim 1 , wherein locating the plurality of machined surface features comprises determining a centroid for each of the machined surface features.

8 . The method of claim 1 , wherein locating the plurality of machined surface features comprises assigning a 3-dimensional coordinate location for each of the machined surface features.

9 . The method of claim 1 , wherein locating the plurality of machined surface features comprises using a structured light scan of the component.

10 . The method of claim 1 , wherein the reference point comprises one of the plurality of machined surface features.

11 . The method of claim 1 , wherein a plurality of reference points are located, and wherein the plurality of first distances comprises distances between each of the plurality of machined surface features and each of the plurality of reference points.

12 . The method of claim 1 , wherein the component comprises a turbine component.

13 . The method of claim 1 , wherein the component comprises a nickel or cobalt based superalloy.

14 . The method of claim 1 , wherein the machined surface features are located in a coating on the component.

15 . The method of claim 14 , wherein the coating comprises yttria stabilized zirconia.

16 . A method for monitoring a turbine component, the method comprising:
locating a plurality of machined surface features on the turbine component; locating at least one reference point; measuring a plurality of first distances between the plurality of machined surface features and the at least one reference point; using the turbine component in a turbomachine; locating the plurality of machined surface features on the turbine component at a second point in time after the turbine component was used in the turbomachine; locating the at least one reference point at the second point in time; measuring a plurality of second distances between the plurality of machined surface features and the at least one reference point at the second point in time; and, comparing the plurality of first distances to the plurality of second distances to determine a strain analysis.

17 . The method of claim 16 , further comprising continuing to utilize the turbine component based on the strain analysis.

18 . The method of claim 16 , wherein the machined surface features comprise cooling holes.

19 . The method of claim 16 , wherein the machined surface features comprise component contours.

20 . The method of claim 16 , wherein the reference point comprises one of the plurality of machined surface features.

Assignees

• Gen Electric

Inventors

• Bojappa Parvangada Ganapathy
• Burnside Jason Lee
• Hovis Gregory Lee
• Ranson William Farris
• Salm Jacob Andrew

Classifications

• G01B11/00 Primary

  Measuring arrangements characterised by the use of optical techniques · CPC title

• G01B11/30

  for measuring roughness or irregularity of surfaces · CPC title

• G01B15/06

  for measuring the deformation in a solid · CPC title

• G01B11/16 Primary

  for measuring the deformation in a solid, e.g. optical strain gauge · CPC title

• G01B15/00

  Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons (characterised by the use of optical techniques G01B9/00, G01B11/00) · CPC title