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

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Effective indenter radius and frame compliance in instrumented indentation testing using a spherical indenter

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Title
Effective indenter radius and frame compliance in instrumented indentation testing using a spherical indenter
Author
Kang, Seung-KyunKim, Ju-YoungKang, IngeunKwon, Dongil
Keywords
Contact depth; Effective indenter; Hardness and elastic modulus; Indentation depth; Indenters; Instrumented indentation testing; Novel methods; Representative stress; Spherical indenters
Issue Date
2009-09
Publisher
CAMBRIDGE UNIV PRESS
Citation
JOURNAL OF MATERIALS RESEARCH, v.24, no.9, pp.2954 - 2973
Abstract
We introduce a novel method to correct for imperfect indenter geometry and frame compliance in instrumented indentation testing with a spherical indenter. Effective radii were measured directly from residual indentation marks at various contact depths (ratio of contact depth to indenter radius between 0.1 and 0.9) and were determined as a function of contact depth. Frame compliance was found to depend on contact depth especially at small indentation depths, which is successfully explained using the concept of an extended frame boundary. Improved representative stress-strain values as well as hardness and elastic modulus were obtained over the entire contact depth.
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DOI
10.1557/JMR.2009.0358
ISSN
0884-2914
Appears in Collections:
MSE_Journal Papers
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