Integral part wear indicator system, method and apparatus

Patent metadata

Field	Value
Publication number	US-10213893-B2
Application number	US-201615076807-A
Country	US
Kind code	B2
Filing date	Mar 22, 2016
Priority date	Dec 13, 2013
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A part comprising a one or more removable wear indicators is provided. The part may be a stator segment comprising a plurality of airfoils. The stator segment may also comprise one or more mock airfoils at each end of the stator segment. Each of the mock airfoils may comprise an indicator configured to wear during a polishing process.

First claim

What is claimed is:

1. A part wear monitoring system, comprising:
a stator segment, comprising:
a plurality of integrally formed airfoils; and
a mock airfoil disposed proximal the plurality of integrally formed airfoils:
wherein the mock airfoil comprises a wear indicator configured to engage axial and radial flow of a fluid during at least one of an abrasive machining process and a polishing process, and the mock airfoil is configured to be removed after at least one of the abrasive machining process and the polishing process.

2. The part wear monitoring system of claim 1 , wherein the wear indicator comprises a first raised surface and a second raised surface that is thicker than the first raised surface.

3. The part wear monitoring system of claim 2 , wherein the second raised surface is disposed on the first raised surface.

4. The part wear monitoring system of claim 1 , wherein the wear indicator comprises an “X” shape.

5. The part wear monitoring system of claim 2 , wherein the first raised surface and the second raised surface are integrally formed.

6. The part wear monitoring system of claim 1 , wherein the mock airfoil is removed in response to completion of at least one of the abrasive machining process and the polishing process.

7. The part wear monitoring system of claim 2 , wherein the second raised surface is thicker than the first raised surface in an axial direction of the stator segment.

8. The part wear monitoring system of claim 1 , wherein the mock airfoil is subject to greater wear from at least one of the abrasive machining process and the polishing process than the integrally formed airfoils.

Assignees

• United Technologies Corp

Inventors

• Beckman Micah
• Livchitz Daniel
• Marchitto Edward
• Masiukiewicz David

Classifications

• F01D21/003

  Arrangements for testing or measuring (for measuring vibrations G01H) · CPC title

• B24C3/327

  by an axially-moving flow of abrasive particles without passing a blast gun, impeller or the like along the internal surface (polishing or abrading surfaces using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure B24B31/116) · CPC title

• B24B19/14 Primary

  for grinding turbine blades, propeller blades or the like (using grinding belts B24B21/16) · CPC title

• B24C1/08

  for polishing surfaces, e.g. {smoothing a surface} by making use of liquid-borne abrasives · CPC title

• G01N3/56

  Investigating resistance to wear or abrasion · CPC title