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Thermal Barrier Coating Life Prediction Model Development
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781731489050 Total Pages :160 pages Book Rating :4.4/5 (89 download)
Book Synopsis Thermal Barrier Coating Life Prediction Model Development by : National Aeronautics and Space Adm Nasa
Download or read book Thermal Barrier Coating Life Prediction Model Development written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-11-18 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes work performed to determine the predominat modes of degradation of a plasma sprayed thermal barrier coating system and to develop and verify life prediction models accounting for these degradation modes. The primary TBC system consisted of a low pressure plasma sprayed NiCrAlY bond coat, an air plasma sprayed ZrO2-Y2O3 top coat, and a Rene' 80 substrate. The work was divided into 3 technical tasks. The primary failure mode to be addressed was loss of the zirconia layer through spalling. Experiments showed that oxidation of the bond coat is a significant contributor to coating failure. It was evident from the test results that the species of oxide scale initially formed on the bond coat plays a role in coating degradation and failure. It was also shown that elevated temperature creep of the bond coat plays a role in coating failure. An empirical model was developed for predicting the test life of specimens with selected coating, specimen, and test condition variations. In the second task, a coating life prediction model was developed based on the data from Task 1 experiments, results from thermomechanical experiments performed as part of Task 2, and finite element analyses of the TBC system during thermal cycles. The third and final task attempted to verify the validity of the model developed in Task 2. This was done by using the model to predict the test lives of several coating variations and specimen geometries, then comparing these predicted lives to experimentally determined test lives. It was found that the model correctly predicts trends, but that additional refinement is needed to accurately predict coating life. Hillery, R. V. and Pilsner, B. H. and Mcknight, R. L. and Cook, T. S. and Hartle, M. S. LIFE (DURABILITY); PREDICTIONS; THERMAL CONTROL COATINGS; ALUMINUM; CHROMIUM; DEGRADATION; FAILURE MODES; NICKEL; PLASMA SPRAYING; SUBSTRATES; YTTRIUM; ZIRCONIUM...
Book Synopsis Thermal Barrier Coating Life Prediction Model Development by : R V. Hillery
Download or read book Thermal Barrier Coating Life Prediction Model Development written by R V. Hillery and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Barrier Coating Life Prediction Model Development - Final Report by : R. V. Hillery
Download or read book Thermal Barrier Coating Life Prediction Model Development - Final Report written by R. V. Hillery and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Barrier Coating Life Prediction Model Development... by : J. T. DeMasi
Download or read book Thermal Barrier Coating Life Prediction Model Development... written by J. T. DeMasi and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Barrier Coating Life - Prediction Model Development by : T. E. Strangman
Download or read book Thermal Barrier Coating Life - Prediction Model Development written by T. E. Strangman and published by . This book was released on 1987 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Barrier Coating Life Prediction Model Development by : Susan Manning Meier
Download or read book Thermal Barrier Coating Life Prediction Model Development written by Susan Manning Meier and published by . This book was released on 1991 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723456268 Total Pages :200 pages Book Rating :4.4/5 (562 download)
Book Synopsis Thermal Barrier Coating Life Prediction Model Development, Phase 2 by : National Aeronautics and Space Administration (NASA)
Download or read book Thermal Barrier Coating Life Prediction Model Development, Phase 2 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this program was to generate a life prediction model for electron-beam-physical vapor deposited (EB-PVD) zirconia thermal barrier coating (TBC) on gas turbine engine components. Specific activities involved in development of the EB-PVD life prediction model included measurement of EB-PVD ceramic physical and mechanical properties and adherence strength, measurement of the thermally grown oxide (TGO) growth kinetics, generation of quantitative cyclic thermal spallation life data, and development of a spallation life prediction model. Life data useful for model development was obtained by exposing instrumented, EB-PVD ceramic coated cylindrical specimens in a jet fueled burner rig. Monotonic compression and tensile mechanical tests and physical property tests were conducted to obtain the EB-PVD ceramic behavior required for burner rig specimen analysis. As part of that effort, a nonlinear constitutive model was developed for the EB-PVD ceramic. Spallation failure of the EB-PVD TBC system consistently occurred at the TGO-metal interface. Calculated out-of-plane stresses were a small fraction of that required to statically fail the TGO. Thus, EB-PVD spallation was attributed to the interfacial cracking caused by in-plane TGO strains. Since TGO mechanical properties were not measured in this program, calculation of the burner rig specimen TGO in-plane strains was performed by using alumina properties. A life model based on maximum in-plane TGO tensile mechanical strain and TGO thickness correlated the burner rig specimen EB-PVD ceramic spallation lives within a factor of about plus or minus 2X. Meier, Susan Manning and Sheffler, Keith D. and Nissley, David M. Unspecified Center CERAMIC COATINGS; ENGINE PARTS; FAILURE ANALYSIS; GAS TURBINE ENGINES; LIFE (DURABILITY); MATHEMATICAL MODELS; MECHANICAL PROPERTIES; PREDICTION ANALYSIS TECHNIQUES; THERMAL CONTROL COATINGS; VAPOR DEPOSITION; ZIRCONIUM OXIDES; ALUMINUM OXIDES; COMPRESSION TESTS; CYLINDRICAL BODIE...
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781724690906 Total Pages :348 pages Book Rating :4.6/5 (99 download)
Book Synopsis Thermal Barrier Coating Life Prediction Model Development, Phase 1 by : National Aeronautics and Space Administration (NASA)
Download or read book Thermal Barrier Coating Life Prediction Model Development, Phase 1 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-04 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this program was to establish a methodology to predict thermal barrier coating (TBC) life on gas turbine engine components. The approach involved experimental life measurement coupled with analytical modeling of relevant degradation modes. Evaluation of experimental and flight service components indicate the predominant failure mode to be thermomechanical spallation of the ceramic coating layer resulting from propagation of a dominant near interface crack. Examination of fractionally exposed specimens indicated that dominant crack formation results from progressive structural damage in the form of subcritical microcrack link-up. Tests conducted to isolate important life drivers have shown MCrAlY oxidation to significantly affect the rate of damage accumulation. Mechanical property testing has shown the plasma deposited ceramic to exhibit a non-linear stress-strain response, creep and fatigue. The fatigue based life prediction model developed accounts for the unusual ceramic behavior and also incorporates an experimentally determined oxide rate model. The model predicts the growth of this oxide scale to influence the intensity of the mechanic driving force, resulting from cyclic strains and stresses caused by thermally induced and externally imposed mechanical loads. Demasi, Jeanine T. and Ortiz, Milton Unspecified Center NASA-CR-182230, NAS 1.26:182230, PWA-5970-40 NAS3-23944...
Book Synopsis Thermal Barrier Coating Life Prediction Model Development by : Jeanine T. DeMasi
Download or read book Thermal Barrier Coating Life Prediction Model Development written by Jeanine T. DeMasi and published by . This book was released on 1989 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this program is to establish a methodology to predict thermal barrier coating (TBC) life on gas turbine engine components. Evaluation of experimental and flight service components indicate the predominant failure mode to be thermomechanical spallation of the ceramic coating layer resulting from propagation of a dominant near interface crack. Predicts the growth of this oxide scale to influence the intensity of the mechanical driving force, resulting from cyclic strains and stresses caused by thermally induced and externally imposed mechanical loads.
Book Synopsis Thermal Barrier Coating Workshop by :
Download or read book Thermal Barrier Coating Workshop written by and published by . This book was released on 1995 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Reliability Based Life Prediction Methods for Thermal and Environmental Barrier Coatings in Ceramic Matrix Composites by :
Download or read book Development of Reliability Based Life Prediction Methods for Thermal and Environmental Barrier Coatings in Ceramic Matrix Composites written by and published by . This book was released on 2001 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress in Thermal Barrier Coatings by : ACerS (American Ceramics Society, The)
Download or read book Progress in Thermal Barrier Coatings written by ACerS (American Ceramics Society, The) and published by John Wiley & Sons. This book was released on 2009-07-15 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition of the Progress in Ceramic Technology series compiles articles published on thermal barrier coatings (TBCs) by The American Ceramic Society (ACerS). It collects in one resource the current research papers on materials-related aspects of thermal barrier coatings and associated technologies. Logically organized and carefully selected, the papers in this edition divide into six categories: Applications Material Improvements and Novel Compositions Developments in Processing Mechanical Properties Thermal Properties Citations follow each title in the table of contents, making this a key resource for professionals and academia.
Book Synopsis Design of Thermal Barrier Coatings by : Mohit Gupta
Download or read book Design of Thermal Barrier Coatings written by Mohit Gupta and published by Springer. This book was released on 2015-05-05 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the relationships between microstructure, interface roughness, and properties of thermal barrier coatings. The author proposes a method for the reduction of the thermal conductivity of the ceramic layer in order to increase the lifetime of thermal barrier coatings. He includes models for the optimization of ceramic layer microstructure and interface roughness.
Book Synopsis Life Prediction Issues in Thermal/Environmental Barrier Coatings in Ceramic Matrix Composites by :
Download or read book Life Prediction Issues in Thermal/Environmental Barrier Coatings in Ceramic Matrix Composites written by and published by . This book was released on 2001 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Barrier Coating Life Prediction Model -- Second Annual Report by : R. V. Hillery
Download or read book Thermal Barrier Coating Life Prediction Model -- Second Annual Report written by R. V. Hillery and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721289769 Total Pages :34 pages Book Rating :4.2/5 (897 download)
Book Synopsis Life Prediction Issues in Thermal/Environmental Barrier Coatings in Ceramic Matrix Composites by : National Aeronautics and Space Administration (NASA)
Download or read book Life Prediction Issues in Thermal/Environmental Barrier Coatings in Ceramic Matrix Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781720479468 Total Pages :26 pages Book Rating :4.4/5 (794 download)
Book Synopsis Development of Reliability Based Life Prediction Methods for Thermal and Environmental Barrier Coatings in Ceramic Matrix Composites by : National Aeronautics and Space Administration (NASA)
Download or read book Development of Reliability Based Life Prediction Methods for Thermal and Environmental Barrier Coatings in Ceramic Matrix Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Literature survey related to the EBC/TBC (environmental barrier coating/thermal barrier coating) fife models, failure mechanisms in EBC/TBC and the initial work plan for the proposed EBC/TBC life prediction methods development was developed as well as the finite element model for the thermal/stress analysis of the GRC-developed EBC system was prepared. Technical report for these activities is given in the subsequent sections.Shah, AshwinGlenn Research CenterCERAMIC MATRIX COMPOSITES; LIFE (DURABILITY); RELIABILITY ANALYSIS; PROTECTIVE COATINGS; THERMAL CONTROL COATINGS; FAILURE; PERFORMANCE PREDICTION; PREDICTION ANALYSIS TECHNIQUES; MATHEMATICAL MODELS; THERMAL STRESSES; STRESS ANALYSIS; CRACKS; OXIDATION; SINTERING
