Measuring and testing – Surface and cutting edge testing – Roughness
Reexamination Certificate
2005-11-29
2005-11-29
Cygan, Michael (Department: 2855)
Measuring and testing
Surface and cutting edge testing
Roughness
C324S637000, C250S306000, C250S307000
Reexamination Certificate
active
06968730
ABSTRACT:
A non-destructive method of detecting subsurface defects in thermal barrier coatings applied to gas turbine engine components is provided. In an exemplary embodiment, the method includes positioning a evanescent microwave microscope probe adjacent a turbine component surface coated with a thermal barrier coating, and scanning the thermal barrier coating by moving at least one of the evanescent microwave microscope probe and the component surface in relation to one another in an x-y plane while maintaining a predetermined distance between the probe and the thermal barrier coating constant.
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Buczek Matthew B.
Darolia Ramgopal
Fitzgerald William C.
LeClair Steven R.
Maguire John F.
Andes William Scott
Armstrong Teasdale LLP
Cygan Michael
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