Results 11 to 20 of about 7,567 (164)

Effect of Machining-Induced Subsurface Defects on Dislocation Evolution and Mechanical Properties of Materials via Nano-indentation [PDF]

open access: yesNanoscale Research Letters, 2019
Subsurface defects have a significant impact on the precision and performance of nano-structures. In this paper, molecular dynamics simulation of nano-indentation is performed to investigate the effect of machining-induced subsurface defects on ...
Quanlong Wang   +4 more
doaj   +2 more sources

Elastic modulus of claystone evaluated by nano-/micro-indentation tests and meso-compression tests

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2017
Toarcian claystone such as that of the Callovo-Oxfordian is a qualified multiphase material. The claystone samples tested in this study are composed of four main mineral phases: silicates (clay minerals, quartz, feldspars, micas) (≈86%), sulphides ...
Daniele Bartier, Christophe Auvray
exaly   +3 more sources

Ultra-nano indentation properties of crosslinked PBT [PDF]

open access: yesMATEC Web of Conferences, 2018
This article deals with the use of Ultra-nano indentation Tester UNHT3 for the measurement of (ultra nano) mechanical properties. The effect of electron beam (EB) radiation on Polybutylene terephthalate (PBT) was investigated.
Ovsik Martin   +3 more
doaj   +3 more sources

A Nano-indentation Identification Technique for Viscoelastic Constitutive Characteristics of Periodontal Ligaments [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2016
Introduction: Nano-indentation has recently been employed as a powerful tool for determining the mechanical properties of biological tissues on nano and micro scales.
Ashrafi H., Shariyat M.
doaj   +1 more source

Assessment and validation of SPH modeling for nano-indentation [PDF]

open access: yesComputational Particle Mechanics, 2023
Nano-indentation tests are important techniques in material science. Over the past two decades, many numerical approaches have been proposed to model and simulate the nano-indentation process. In this paper, the possibility of modeling the process using a meshless numerical technique, known as smooth particle hydrodynamics (SPH), is explored.
Hao Shen   +2 more
openaire   +1 more source

Comparison of the Indentation Processes Using the Single Indenter and Indenter Array: A Molecular Dynamics Study

open access: yesNanoscale Research Letters, 2022
Fabrication of periodic nanostructures has drawn increasing interest owing to their applications of such functional structures in optics, biomedical and power generation devices.
Yanquan Geng   +5 more
doaj   +1 more source

Estimation of directional single crystal elastic properties from nano-indentation by correlation with EBSD and first-principle calculations

open access: yesMaterials & Design, 2023
In this study, a two-step optimisation process for the estimation of the single crystal stiffness tensor from the indentation modulus is presented. This was accomplished by using a 2-dimensional data correlation method for nano-indentation, EBSD and ab ...
Mattis Seehaus   +4 more
doaj   +1 more source

Effect of loading strain rate on nano-indentation response of an aerospace grade epoxy polymer

open access: yeseXPRESS Polymer Letters, 2023
Depth sensing indentation holds the promise of local mechanical properties determination. However, the number of studies on materials that exhibit time-dependent and hydrostatic pressure-dependent behavior is still scarce.
Laura Alejandra Fasce   +2 more
doaj   +1 more source

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

Evaluation of Mechanical Characteristics of Tribofilm Formed on the Surface of Metal Material Due to Friction under Lubrication with Automatic Transmission Fluid

open access: yesTribology Online, 2021
In this study, nano-scratch tests were conducted using atomic force microscope (AFM) to clarify the hardness of a tribofilm derived from an additive (Fluid A or Fluid B in automatic-transmission fluid) formed on an SKS3 cold work tool steel substrate ...
Takayuki Tokoroyama   +8 more
doaj   +1 more source

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