Results 241 to 250 of about 12,577,788 (269)
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A Generalized Load-Penetration Relation for Sharp Indenters and the Indentation Size Effect
Journal of Applied Mechanics, 2002A dimensional analysis has been made of elastic-plastic indentation of an anisotropic solid, and of a solid showing pressure-sensitive yield behavior. It is found that, P∝δ2, for indentation with sharp, self-similar indenters, where P is the load applied by the indenter and δ is the corresponding distance of penetration of the indenter into the solid ...
Li, Z. Y., Chandrasekar, S., Yang, H. T.
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Crystal plasticity finite element method modelling of indentation size effect
International Journal of Solids and Structures, 2015 A crystal plasticity finite element method (CPFEM) model has been developed to investigate the indentation size effect (ISE) of aluminium single crystal during nano-indentation.
Mao Liu, Cheng Lu
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A Fractal Approach Interpretation for the Indentation Size Effect
2008Since the 1950’s (Tabor [1]), the hardness measurements have been recognized to be size dependent; a hardness increase with decreasing indentation depth (or indenter size) is always observed. The indentation size effect (ISE) is extensively studied in the literature and research in this field has been continuously growing in the last decades; this is ...
CARPINTERI, Alberto, PUZZI, SIMONE
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A different type of indentation size effect
Scripta Materialia, 2008Pop-in during nanoindentation, which indicates the onset of dislocation plasticity, was systematically investigated in annealed and pre-strained single crystals of nickel using spherical indenters with different tip radii. As the indenter radius and pre-strain decrease, the maximum shear stresses determined from the pop-in loads increase.
S. Shim, H. Bei, E.P. George, G.M. Pharr
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On thresholds in the indentation size effect of polymers
Polymer Bulletin, 2015Length scale-dependent deformation in polymers has been observed by various research groups in the last years. Here, the indentation size effect of polymers is studied where the hardness increases with decreasing indentation depth. As a model polymer, polydimethylsiloxane (PDMS) of two different cross-link densities is studied as it has been found in ...
Ashley N. Bucsek +3 more
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A model of size effects in nano-indentation
Journal of the Mechanics and Physics of Solids, 2006zbMATH Open Web Interface contents unavailable due to conflicting licenses.
W D Nix, K C Hwang, G M Pharr
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Indentation size effect: reality or artefact?
Journal of Materials Science, 1996The purpose of this investigation was to study the load dependence of the microhardness, typically in the range 5–500 gf. This well known phenomena is called the indentation size effect (ISE) and was investigated for two sets of specimens: titanium and aluminium alloys.
A. Iost, R. Bigot
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Indentation Size Effect during Measuring the Hardness of Materials by Spherical Indenter
Solid State Phenomena, 2020The work balance method was used to study the effect of the indenter diameter on the indentation size effect when measuring Brinell hardness. It is shown that the main criterion for the indentation size effect is the specific work of plastic deformation when an indenter is introduced. The conditions of indentation are established to ensure the smallest
Andrey A. Udalov +2 more
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A fractal approach to indentation size effect
Engineering Fracture Mechanics, 2006Abstract In this paper, we propose an original interpretation of indentation size effect (ISE) in both single crystal and polycrystalline metals, which is based on the experimental evidence of the formation of fractal cellular dislocation patterns during the later stages of plastic deformation, in strain hardening metals, both under tensile loading ...
CARPINTERI, Alberto, PUZZI, SIMONE
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The prediction of a size effect in microindentation
International Journal of Solids and Structures, 1998zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shu, J. Y., Fleck, N. A.
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