IP Library Granted Patent US 11,480,500
Granted Patent B2
US 11,480,500 · App. 16/734,818 · Granted Oct 25, 2022

Method of inspecting component surface with marking media

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Quick Facts
Patent No.
US 11,480,500
App. No.
16/734,818
Filed
Jan 6, 2020
Granted
Oct 25, 2022
Kind
B2
Art Unit
2856
USPC
73/112.01
Abstract

A method of evaluating the quality of a surface on a component comprises the steps of (a) contacting a surface of a component with a media and imprinting qualities of the surface with the media; and (b) evaluating the imprint to determine the quality of the surface of the component.

Claims (26)

1. A method of evaluating a quality of a surface on a component comprising the steps of:

(a) contacting a surface of a component with a media and imprinting qualities of the surface with the media to form an imprint, and a gauge is utilized to ensure a controllable force during the contacting; and

(b) evaluating the imprint to determine the quality of the surface of the component; wherein the component is a rotating blade in a gas turbine engine, and the surface of the rotating blade includes a plurality of particles and the quality determined in step (b) includes determining whether the particles have worn such that they should be replaced;

wherein the particles are abrasive particles.

2. The method as set forth in claim 1 , wherein the media includes a marking paper.

3. The method as set forth in claim 1 , wherein in step (b) a size of an average of a plurality of said imprint is evaluated to determine whether the particles should be replaced.

4. The method as set forth in claim 1 , wherein in step (b) a percentage of mark per unit area is compared to a limit to identify whether the particles should be replaced.

5. The method as set forth in claim 1 , wherein in step (b) an absence of particles is also identified as part of the quality determination.

6. The method as set forth in claim 1 , wherein in step (b) an imprint from the media on the particles is evaluated to make the quality determination.

7. The method as set forth in claim 1 , wherein the media includes a marking paper.

8. The method as set forth in claim 7 , wherein in step (b) a size of an average imprint is evaluated to determine whether the particles should be replaced.

9. The method as set forth in claim 7 , wherein in step (b) a percentage of mark per unit is compared to a limit to identify whether the particles should be replaced.

10. The method as set forth in claim 1 , wherein in step (b) the size of the average of a plurality of said imprint is evaluated to determine whether the particles should be replaced.

11. The method as set forth in claim 1 , wherein in step (b) a percentage of mark per unit area of the paper is compared to a limit to identify whether the particles should be replaced.

12. A method of evaluating a quality of a surface on a component comprising the steps of:

(a) contacting a surface of a component with a media and imprinting qualities of the surface with the media to form an imprint;

(b) evaluating the imprint to determine the quality of the surface of the component;

wherein the media includes a marking paper; and

wherein the marking paper passes the imprint from the surface to form a second imprint onto a second piece of paper.

13. The method as set forth in claim 12 , wherein in step (b) a size of an average imprint on the second paper is evaluated to determine whether the particles should be replaced.

14. The method as set forth in claim 12 , wherein in step (b) a percentage of mark on the second piece of paper per unit area of the second piece of paper is compared to a limit to identify whether the particles should be replaced.

15. The method as set forth in claim 12 , wherein a gauge is utilized to ensure a controllable force during the contacting of step (a).

16. A method of evaluating a quality of a surface on a component comprising the steps of:

(a) contacting a surface of a component with a media and imprinting qualities of the surface with the media to form an imprint;

(b) evaluating the imprint to determine the quality of the surface of the component; and

wherein steps (a) and (b) are performed after the component is resurfaced.