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Author

Kim, Ju-Young
Robust Multifunctional Materials Lab
Research Interests
  • Flexible / stretchable devices, nano-mechanics, nanoporous metal, materials reliability

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Determining effective radius and frame compliance in spherical nanoindentation

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Title
Determining effective radius and frame compliance in spherical nanoindentation
Author
Kang, Seung-KyunKim, Young-CheonLee, Yun-HeeKim, Ju-YoungKwon, Dongil
Keywords
AFM; Contact regions; Effective radius; Elastic contact; Elastoplastic contact; Frame compliance; Indentation depth; Indenters; Nanoindenters; Spherical indenters; Tip bluntness
Issue Date
201203
Publisher
ELSEVIER SCIENCE SA
Citation
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.538, no., pp.58 - 62
Abstract
We estimate effective radii of a spherical nanoindenter at various indentation depths using Hertz elastic contact theory for the fully elastic contact region and AFM profiling residual indentation marks for the elastoplastic contact region. Using frame compliance measured as a function of indentation depth and the concept of infinitesimal deformation of a spherical nanoindenter, we introduce a profile of indentation-depth-dependent frame compliance that successfully explains the variation in frame compliance over the entire contact region. After using this indentation-depth-dependent frame compliance, we evaluated more consistent indenter radii from Hertz elastic contact theory at shallow indentation depths (<90 nm).
URI
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DOI
http://dx.doi.org/10.1016/j.msea.2012.01.013
ISSN
0921-5093
Appears in Collections:
MSE_Journal Papers

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