Electromagnetic probe testing of bond coat

1. A method for measuring a non-magnetic coating thickness upon a non-magnetic gas turbine component, the method comprising:

applying a magnetic coating upon the non-magnetic gas turbine component;

applying a non-magnetic coating upon the magnetic coating; and

measuring a thickness of the non-magnetic coating with a magnetic induction probe.

2. The method of claim 1 , wherein the non-magnetic gas turbine component is a representative non-magnetic gas turbine component having a geometry equivalent to geometry of a plurality of non-magnetic gas turbine components.

3. The method of claim 1 , further comprising removing the non-magnetic coating and the magnetic coating from the non-magnetic gas turbine component.

4. The method of claim 3 , further comprising reusing the non-magnetic gas turbine component to measure another non-magnetic coating thickness applied thereto on top of another magnetic coating.

5. The method of claim 1 , wherein the non-magnetic coating is applied according to a set of instructions configured to apply the non-magnetic coating to different surfaces of the gas turbine component.

6. The method of claim 5 , wherein the magnetic coating is applied according to the set of instructions.

7. The method of claim 5 , wherein the non-magnetic coating and the magnetic coating are applied using a robotic arm.

8. The method of claim 1 , further comprising validating a thickness of the magnetic coating before applying the non-magnetic coating.

9. The method of claim 1 , wherein the non-magnetic gas turbine component comprises a gas path component completely covered by the magnetic coating and the non-magnetic coating.

10. A method of inspecting a coating thickness of a gas turbine component, the method comprising:

mounting the gas turbine component in a fixture;

coating the gas turbine component with a ferrous coating; and

validating the ferrous coating with a testing tool; wherein

the gas turbine component comprises a non-magnetic, gas path component; and

the testing tool comprises a magnetic induction probe.

11. The method of claim 10 , further comprising:

spraying a metallic bond coating with a thermal spray gun mounted to an articulating arm configured to move about the fixture.

12. The method of claim 11 , further comprising measuring the metallic bond coating with the testing tool.

13. The method of claim 11 , wherein the metallic bond coating is sprayed according to a programmed pattern so that the metallic bond coating covers a designated surface area of the gas turbine component.

14. The method of claim 13 , wherein the programmed pattern is executed with an automated robotic arm.

15. The method of claim 13 , wherein the ferrous coating and the metallic bond coating are applied according to the programmed pattern.

16. The method of claim 10 , wherein the ferrous coating is applied to a thickness of 0.14 mm.

17. The method of claim 10 , wherein validating the ferrous coating with a testing tool comprises:

positioning a non-magnetic shim having a known thickness against the ferrous coating; and

measuring the shim thickness between an induction probe and the ferrous coating.

18. The method of claim 10 , further comprising:

stripping the gas turbine component of the ferrous coating; and

reusing the gas turbine component to validate another spray process.

19. The method of claim 10 , wherein:

the ferrous coating comprises FE-276-2; and

the metallic bond coating comprises CoNiCrAlY.

20. A method of inspecting a coating thickness of a gas turbine component, the method comprising:

mounting the gas turbine component in a fixture;

coating the gas turbine component with a ferrous coating;

validating the ferrous coating with a testing tool;

stripping the gas turbine component of the ferrous coating; and

reusing the gas turbine component to validate another spray process.