Results 21 to 30 of about 19,380 (165)
The Correlation of Indentation Size Effect Experiments with Pyramidal and Spherical Indenters [PDF]
MRS Proceedings, 2001 ABSTRACTExperiments were conducted in annealed iridium using pyramidal and spherical indenters over a wide range of load. For a Berkovich pyramidal indenter, the hardness increased with decreasing depth of penetration. However, for spherical indenters, hardness increased with decreasing sphere radius.
Swadener, J. G. (John G.) +2 more
openaire +1 more source
The influence of indenter tip rounding on the indentation size effect [PDF]
Acta Materialia, 2010 Abstract A model was developed to interpret the indentation size effect (ISE). The model considers the tip wear effect, causing a rounded tip, the plastic zone size and various strengthening contributions, including geometrically necessary dislocations, pre-existing statistically stored dislocations and grain size.
Qiao, Xiaoguang +2 more
openaire +3 more sources
Journal of the Mechanical Behavior of Materials, 2016 The so-called indentation size effect (ISE) observed mainly in nanoindentation measurements with prismatic tips, is theoretically modeled in this article with the use of gradient theory. It is shown that the ISE, i.e.
Kampouris Asterios K. +1 more
doaj +1 more source
A gradient elasticity approach to the indentation size effect at very small depths
Journal of the Mechanical Behavior of Materials, 2011 Over the past two decades, the indentation size effect (ISE) has been studied extensively by several authors. A common point among all these studies has been the premise that during the indentation process sufficient plastic deformation is developed so ...
Mokios George P., Aifantis Elias C.
doaj +1 more source
Investigation of the mechanism of the indentation size effect for titanium
Mechanical Engineering Journal, 2019 In this study, we investigated the mechanism of the indentation size effect for Ti, whose crystal structure is hexagonal close-packed. Indentation tests were performed for two types of single-crystal Ti with different crystal orientations: (0001) and ...
Shota HASUNUMA +2 more
doaj +1 more source
Mechanical Engineering Journal, 2018 In this study, we investigated the mechanism of the indentation size effect based on measurement of the geometrically necessary (GN) dislocation density. The GN dislocation density was measured around impressions by electron backscatter diffraction (EBSD)
Shota HASUNUMA +3 more
doaj +1 more source
Study on Size Effect in Indentation Tests
Coatings, 2022 The depth dependence of the indentation hardness, i.e., the indentation size effect (ISE), was manifested as an increase or decrease in hardness when penetration depth decreases, which was observed by previous experiments. Most scholars believe it is generated by strain gradient.
Xiaozhen Li +5 more
openaire +1 more source
INDENTATION SIZE EFFECT OF HEAT TREATED ALUMINUM ALLOY
Acta Metallurgica Slovaca, 2019 The aim of the submitted work is to study the influence of applied loads ranging from 0.09807 N to 0.9807 N on measured values of micro-hardness of heat treated aluminum alloy 6082. The influence of applied load on a measured value of micro-hardness was
Jozef Petrík +4 more
doaj +1 more source
Nanoindentation of zirconium based bulk metallic glass and its nanomechanical properties
Journal of Materials Research and Technology, 2020 Nanoindentation experiments with a Berkovich tip are performed on zirconium based bulk metallic glass (Zr-BMG, Zr65Cu15Al10Ni10) to study its deformation and mechanical properties (elastic modulus and hardness) at nanoscale. Further to reveal indentation-
Karuppasamy Pandian Marimuthu +4 more
doaj +1 more source
Indentation Depth Dependent Mechanical Behavior in Polymers
Advances in Condensed Matter Physics, 2015 Various experimental studies have revealed size dependent deformation of materials at micro and submicron length scales. Among different experimental methods, nanoindentation testing is arguably the most commonly applied method of studying size effect in
Farid Alisafaei, Chung-Souk Han
doaj +1 more source