Invention Grant
- Patent Title: Local residual stress measurement and analysis for detection and prediction of damage in thermal barrier coatings
- Patent Title (中): 局部残余应力测量和分析，用于检测和预测热障涂层的损伤
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Application No.: US11973977Application Date: 2007-10-04
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Publication No.: US07918141B1Publication Date: 2011-04-05
- Inventor: Shamachary Sathish , Sonia A. Martinez
- Applicant: Shamachary Sathish , Sonia A. Martinez
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the Secretary of the Air Force
- Current Assignee: The United States of America as represented by the Secretary of the Air Force
- Current Assignee Address: US DC Washington
- Agency: AFMCLO/JAZ
- Agent James P. Calve
- Main IPC: G01L5/00
- IPC: G01L5/00
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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