NDLI: Life prediction issues in thermal/environmental barrier coatings in ceramic matrix composites

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Life prediction issues in thermal/environmental barrier coatings in ceramic matrix composites

Content Provider	NASA Technical Reports Server (NTRS)
Author	Murthy, Pappu L. N. Shah, Ashwin R. Brewer, David N.
Copyright Year	2001
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.
File Size	1112364
Page Count	20
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20020022306
Archival Resource Key	ark:/13960/t43r5t838
Language	English
Publisher Date	2001-12-01
Access Restriction	Open
Subject Keyword	Composite Materials Ceramic Matrix Composites Thermal Control Coatings Stochastic Processes Failure Analysis Life Durability Reliability Protective Coatings Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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