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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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Surface roughness effect in instrumented indentation: A simple contact depth model and its verification

Cited 19 times inthomson ciCited 17 times inthomson ci
Title
Surface roughness effect in instrumented indentation: A simple contact depth model and its verification
Author
Kim, Ju-YoungLee, Jung-JunLee, Yun-HeeJang, Jae-ilKwon, Dongil
Keywords
ELASTIC-MODULUS; HARDNESS; NANOINDENTATION; LOAD
Issue Date
200612
Publisher
CAMBRIDGE UNIV PRESS
Citation
JOURNAL OF MATERIALS RESEARCH, v.21, no.12, pp.2975 - 2978
Abstract
Since in instrumented indentation the contact area is indirectly measured from the contact depth, the natural and unavoidable roughness of real surfaces can induce some errors in determining the contact area and thus in calculating hardness and Young's modulus. To alleviate these possible errors and evaluate mechanical properties more precisely, here a simple contact model that takes into account the surface roughness is proposed. A series of instrumented indentations were made on W and Ni samples whose surface roughness is intentionally controlled, and the results are discussed in terms of the proposed model.
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DOI
http://dx.doi.org/10.1557/JMR.2006.0370
ISSN
0884-2914
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