Results 21 to 30 of about 2,880,770 (308)

Investigation of the mechanism of the indentation size effect for titanium

open access: yesMechanical 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

Permanent indentation characterization for low-velocity impact modelling using three-point bending test [PDF]

open access: yes, 2014
This paper deals with the origin of permanent indentation in composite laminates subjected to low-velocity impact. The three-point bending test is used to exhibit a non-closure of matrix crack which is assumed as a cause of permanent indentation ...
Bouvet, Christophe   +3 more
core   +1 more source

Progress in Indentation Study of Materials via Both Experimental and Numerical Methods

open access: yesCrystals, 2017
Indentation as a method to characterize materials has a history of more than 117 years. However, to date, it is still the most popular way to measure the mechanical properties of various materials at microscale and nanoscale.
Mao Liu   +5 more
doaj   +1 more source

Indentation response of a NiTi shape memory alloy: modeling and experiments [PDF]

open access: yesFracture and Structural Integrity, 2012
The indentation response of a pseudoelastic nickel-titanium based shape memory alloy (SMA) has been analyzed. Indentation tests have been carried out at room temperature using a spherical diamond tip and indentation loads in the range 50-500 mN in order ...
C. Maletta   +5 more
doaj   +4 more sources

Investigation of the indentation size effect based on measurement of the geometrically necessary dislocation density by electron backscatter diffraction

open access: yesMechanical 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

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

open access: yesJournal of Materials Research, 2009
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 ...
Kang, Seung-Kyun   +3 more
openaire   +2 more sources

Mechanical properties of self-ion irradiated pure tungsten using nano-indentation test and micro-tensile test

open access: yesNuclear Materials and Energy, 2022
The existing nano-indentation method and developmental micro-tensile testing method are more attractive in accurately defining the irradiation effect on the mechanical behavior and adopted in this study to identify the detailed irradiation behavior of ...
J.H. Yu, H. Kurotaki, M. Ando, T. Nozawa
doaj   +1 more source

Effects of ball size and microstructures on indentation curves of Fe9Cr model alloys and tempered martensitic steel Eurofer97

open access: yesNuclear Materials and Energy, 2022
Nano-indentation with spherical indenters is a test technique largely used to determine the elastic–plastic behavior of a very small volume of material.
Peng Song, Philippe Spätig
doaj   +1 more source

Determining materials yield strength with Lüders behavior of existing steel structures using instrumented indentation approach

open access: yesCase Studies in Construction Materials
The instrumented indentation approach has become popular to characterize the mechanical properties of metals on-site. Although the evaluation of the materials' strength of metal structures is possible using the instrumented indentation approach, a few ...
Yang Peng   +4 more
doaj   +1 more source

Factors Resulting In Micron Indentation Hardness Descending In Indentation Tests

open access: yes, 2009
Some factors that affect the experimental results in nanoindentation tests such as the contact depth, contact area, load and loading duration are analyzed in this article.
Chen WM, 陈伟民, 李敏
core   +1 more source

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