Results 41 to 50 of about 2,129,467 (285)

Beyond Hertz: Accurate Analytical Force–Indentation Equations for AFM Nanoindentation with Spherical Tips

open access: yesMetrology
The Hertz equation is the most widely used equation for data processing in AFM nanoindentation experiments on soft samples when using spherical indenters.
Stylianos-Vasileios Kontomaris   +4 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Evaluation of Young's modulus of skin tissue by indentation test based on modified Hertz contact theory

open access: yesNihon Kikai Gakkai ronbunshu, 2015
An advantage of the indentation test is that it can be used to easily measure the elastic modulus of biological soft tissue in noninvasive. To measure Young's modulus, E*, of skin tissue by an indentation test, we expanded the Hertz contact theory ...
Kazuhiro DOI   +2 more
doaj   +1 more source

Mechanical Behavior Investigation of 4H-SiC Single Crystal at the Micro–Nano Scale

open access: yesMicromachines, 2020
In this paper, theoretical models of the critical indentation depth and critical force on brittle materials using cleavage strength and contact theory are proposed.
Peng Chai   +4 more
doaj   +1 more source

Indentation of Commercial Pure Titanium Processed by Cold Rolling

open access: yesMetals
In this work, the effects of plastic deformation on the indentation behaviors of commercial pure titanium alloy were investigated. Titanium experienced various kinds of deformation by cold rolling processes, and the indentation behaviors were measured ...
Diaoyu Zhou   +4 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

open access: yesAdvanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati   +11 more
wiley   +1 more source

Formation of a microlens array molding die by indenter pressing on porous metal substrates [PDF]

open access: yesEPJ Web of Conferences
We propose an indentation-based method for fabricating lens array molds using sintered metal substrates. Whereas cast metals tend to generate pileups at the edges of impressions formed by indentation, such pileups are suppressed in sintered metals, which
Takino Hideo, Makino Shingo
doaj   +1 more source

Accurate Modelling of AFM Force-Indentation Curves with Blunted Indenters at Small Indentation Depths

open access: yesMicromachines
When testing biological samples with atomic force microscopy (AFM) nanoindentation using pyramidal indenters, Sneddon’s equation is commonly used for data processing, approximating the indenter as a perfect cone. While more accurate models treat the AFM tip as a blunted cone or pyramid, these are complex and lack a direct relationship between applied ...
Kontomaris, Stylianos - Vasileios   +2 more
openaire   +4 more sources

Relationship Between Contact Stiffness, Contact Depth, and Mechanical Properties for Indentation in Linear Viscoelastic Solids Using Axisymmetric Indenters

open access: yes, 2006
We derive a relationship between the initial unloading slope, contact depth, and the instantaneous relaxation modulus for indentation in linear viscoelastic solids by a rigid indenter with an arbitrary axisymmetric smooth profile.
郑哲敏   +2 more
core   +1 more source

A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation

open access: yesAdvanced Engineering Materials, EarlyView.
A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy