Local residual stress measurement and analysis for detection...

Details Local residual stress measurement and analysis for detection... Local residual stress measurement and analysis for detection...

2011-04-05

2011-04-05

Kirkland, III, Freddie (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

C073S105000

Reexamination Certificate

active

07918141

ABSTRACT:
The present invention provides a method for evaluating degradation of a thermal barrier coating disposed on a turbine blade. The method includes measuring a residual stress of an outer surface portion of a thermal barrier coating on a turbine blade, the turbine blade having been subjected to normal operating conditions and determining degradation of the thermal barrier coating based on a comparison between the residual stress measurement and a control stress measurement.

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