Results 31 to 40 of about 15,501 (158)

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

Numerical Study on the Rebound of Low-Velocity Impact-Induced Indentation in Composite Laminate

open access: yesAerospace, 2022
Indentation is an effective indication of LVI damage in PMCs. However, indentation can rebound partly with time. Thus, a good understanding of the rebound behavior of the impacted pit is helpful in damage assessment for composites.
Muhammad Yousaf, Chuwei Zhou
doaj   +1 more source

Nanoindentation of polyurethane with phase-separated fibrillar structure

open access: yesPolymer Testing, 2021
: Polyurethane elastomer is investigated by atomic force microscopy (AFM) in a regime of fast nanoindentation (simultaneous getting relief and mechanical properties of the surface).
Ilya A. Morozov
doaj   +1 more source

LOCAL NANO-MECHANICAL PROPERTIES OF CROSS-LINKED POLYBUTYLENE

open access: yesActa Polytechnica CTU Proceedings, 2020
Cross-linking is a process in which polymer chains are associated through chemical bonds. The cross-linking level can be adjusted by the irradiation dosage and often by means of a cross-linking booster. The polymer additional cross-linking influences the
Martin Ovsík   +3 more
doaj   +1 more source

Fabrication of Ordered Micro/Nanostructures Using Probe-Based Force-Controlled Micromachining System

open access: yesChinese Journal of Mechanical Engineering, 2022
This paper presents a probe-based force-controlled nanoindentation method to fabricate ordered micro/nanostructures. Both the experimental and finite element simulation approaches are employed to investigate the influence of the interval between the ...
Yanquan Geng   +4 more
doaj   +1 more source

A New Elementary Method for Determining the Tip Radius and Young’s Modulus in AFM Spherical Indentations

open access: yesMicromachines, 2023
Atomic force microscopy (AFM) is a powerful tool for characterizing biological materials at the nanoscale utilizing the AFM nanoindentation method. When testing biological materials, spherical indenters are typically employed to reduce the possibility of
Stylianos Vasileios Kontomaris   +3 more
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

The Issues of the Radiation Hardening Determination of Steels After Ion Irradiation Using Instrumented Indentation

open access: yesMetals
The application of the instrumented indentation method with a Berkovich indenter (triangular pyramid) is considered for the determination of microhardness and radiation hardening of ion-irradiated steels.
Boris Margolin   +2 more
doaj   +1 more source

MODERN CLASSIFICATION OF HARDNESS DETERMINATION METHODS [PDF]

open access: yesAvtomobilʹnyj Transport (Harʹkov), 2010
A new approach concerning the classification of materials hardness determination methods, based on the value of indentation depth exponent in the calculation formula is developed.
V. Moshchenok
doaj  

Small depth indentation of plastic materials

open access: yesPolymer Testing, 1994
Abstract A new apparatus was developed to perform creep, recovery, relaxation or indentation tests based on the local deformation of polymeric solids by harder indenters. This paper outlines the design concepts of this device that fits in a typical universal tensile testing machine.
H. Benabdallah, J.-P. Chalifoux
openaire   +1 more source

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