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A method for in situ measurement of the elastic behavior of a columnar thermal barrier coating
Eberl C; Gianola DS; Wang X; He MY; Evans AG; Hemker KJ; Eberl, C (reprint author), Karlsruhe Inst Technol, Inst Appl Mat, Karlsruhe, Germany
Source PublicationActa Materialia
2011
Volume59Issue:9Pages:3612-3620
ISSN1359-6454
AbstractThe mechanical behavior of a ceramic coating and the evolution of this behavior in-service play crucial roles in governing the performance and lifetime of these materials. A protocol is presented that allows for characterization of the in-plane elastic modulus and strain to failure of fragile ceramic coatings. The protocol employs digital image correlation (DIC) to measure time-resolved, full-field strain maps of bilayer microbeams, and material properties are extracted through direct comparison with finite element simulations of microbending experiments. The efficacy of the method is demonstrated by the measurement of the in-plane Young's modulus (E(TBC) = 15-30 GPa) and the strain to fracture (3.5-5 x 10(-3)) of electron beam physical vapor deposited 7% yttria-stabilized zirconia thermal barrier coatings (TBCs). The results from this study also indicate that the in-plane TBC modulus has no strain dependence when measured in tension. (C) 2011 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
KeywordThermal Barrier Coating (Tbc) Digital Image Correlation Elastic In Plane Modulus Fracture Strain Eb-pvd 7ysz Residual-stresses Microstructure Indentation
Subject AreaMaterials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.actamat.2011.02.034
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000290692600028
WOS KeywordRESIDUAL-STRESSES ; MICROSTRUCTURE ; INDENTATION
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Classification一类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44930
Collection非线性力学国家重点实验室
Corresponding AuthorEberl, C (reprint author), Karlsruhe Inst Technol, Inst Appl Mat, Karlsruhe, Germany
Recommended Citation
GB/T 7714
Eberl C,Gianola DS,Wang X,et al. A method for in situ measurement of the elastic behavior of a columnar thermal barrier coating[J]. Acta Materialia,2011,59(9):3612-3620.
APA Eberl C.,Gianola DS.,Wang X.,He MY.,Evans AG.,...&Eberl, C .(2011).A method for in situ measurement of the elastic behavior of a columnar thermal barrier coating.Acta Materialia,59(9),3612-3620.
MLA Eberl C,et al."A method for in situ measurement of the elastic behavior of a columnar thermal barrier coating".Acta Materialia 59.9(2011):3612-3620.
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