Life Prediction Issues in Thermal/Environmental Barrier Coatings in Ceramic Matrix Composites

Released on by National Aeronautics and Space Administration (NASA)
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  • Life Prediction Issues in Thermal/Environmental Barrier Coatings in Ceramic Matrix Composites Book Detail

  • Author : National Aeronautics and Space Administration (NASA)
  • Release Date : 2018-06-19
  • Publisher : Createspace Independent Publishing Platform
  • Genre :
  • Pages : 34
  • ISBN 13 : 9781721289769
  • File Size : 16,16 MB
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Life Prediction Issues in Thermal/Environmental Barrier Coatings in Ceramic Matrix Composites by National Aeronautics and Space Administration (NASA) PDF Summary

Book Description: Issues and design requirements for the environmental barrier coating (EBC)/thermal barrier coating (TBC) life that are general and those specific to the NASA Ultra-Efficient Engine Technology (UEET) development program have been described. The current state and trend of the research, methods in vogue related to the failure analysis, and long-term behavior and life prediction of EBCITBC systems are reported. Also, the perceived failure mechanisms, variables, and related uncertainties governing the EBCITBC system life are summarized. A combined heat transfer and structural analysis approach based on the oxidation kinetics using the Arrhenius theory is proposed to develop a life prediction model for the EBC/TBC systems. Stochastic process-based reliability approach that includes the physical variables such as gas pressure, temperature, velocity, moisture content, crack density, oxygen content, etc., is suggested. Benefits of the reliability-based approach are also discussed in the report. Shah, Ashwin R. and Brewer, David N. and Murthy, Pappu L. N. Glenn Research Center NASA/TM-2001-211321, E-12967, NAS 1.15:211321

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