Results 41 to 50 of about 111,237 (217)

The Effect of LED Light on Depth of Cure and Microhardness of Three Types of Bulkfill Composite

open access: yesJournal of Baghdad College of Dentistry, 2016
Background: To evaluate the ISO depth of cure of bulkfill composites and depth of cure which determined by Vickers microhardness test. Materials and Methods: Bulkfill resin composite specimens (n=150) were prepared of three bulkfill composite materials (
Mohannad R A, Luma MS Baban
doaj   +1 more source

In Vitro evaluation of remineralization potential of novamin on artificially induced carious lesions in primary teeth using scanning electron microscope and vickers hardness

open access: yesIndian Journal of Dental Research, 2019
Aims: The objective of this in vitro study was to find out the efficacy of Novamin in remineralizing enamel surface on which artificial caries lesion had been created. The changes were analyzed using Vickers Hardness Testing Machine and Scanning electron
A. Gangwar, K. Jha, J. Thakur, M. Nath
semanticscholar   +1 more source

Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin

open access: yesMaterials Research, 2009
The aim of this study was to determine the effect of variations in indentation load and time on the Knoop and Vickers hardness numbers (KHN and VHN) for enamel and dentin.
Chanya Chuenarrom   +2 more
doaj   +1 more source

Study on the mechanical properties gradient in surface oxygen diffusion hardened layer of Ti6Al4V alloy

open access: yesJournal of Materials Research and Technology, 2022
This paper studies the mechanical properties gradient in surface oxygen diffusion hardened (SODH) layer of Ti6Al4V alloy by four-point bending test, nano-indentation test and Vickers hardness measurement test. The relationships of hardness-oxygen content
Hao Fei   +6 more
doaj  

Improving the Accuracy of Low-load Vickers Microhardness Testing of Hard Thin Films

open access: yesProcedia Technology, 2014
AbstractExperiments that involved the testing of different steel samples over a wide range of loads were conducted in order to investigate the influence of micro-loads on accuracy of Vickers microindentation hardness testing. We found that for the same material the Vickers microhardness decreases with the decreasing of test load. The measuring error of
László Jakab-Farkas, Gabriela Strnad
openaire   +2 more sources

Micro-Vickers Hardness of Intermetallic Compounds in the Zn-rich Portion of Zn–Fe Binary System

open access: yesISIJ International, 2018
are frequently observed on the α Fe/ Γ phase boundary or in the Γ phase layer. 1,7) Therefore, mechanical properties of the IMCs (especially, Γ phase) are a key issue to be examined for improving the formability of Annealing temperature and composition ...
K. Han   +4 more
semanticscholar   +1 more source

Analisa Pengaruh Variasi Temperatur Tuang Pada Proses Pengecoran Alumunium Kaleng Bekas Terhadap Sifat Kekerasan Dan Struktur Mikro

open access: yesPatria Artha Technological Journal
The purpose of this study is to determine the effect of casting temperature variations on the hardness and microstructure of used aluminium cans. The casting method used in this research is the Lost Foam Casting method with a cast temperature variation ...
Sukirman A Togubu   +2 more
doaj   +1 more source

Effect of Real-Time Environment on Mechanical Properties of Preformed Stainless Steel Archwires: An In Vivo Study

open access: yesThe Scientific World Journal, 2023
Introduction. Clinicians should be aware of any effect the oral environment may have on archwires. Laboratory models fail to closely imitate intraoral conditions.
Divya Pai   +4 more
doaj   +1 more source

The Influence of Indenter Rotation Angle on The Quality of Vicker Tester Calibration

open access: yesKvalita Inovácia Prosperita, 2011
The object of submitted work is to analyze the influence of the rotation of the indenter (diamond pyramid) and test force on the result of Vickers hardness tester calibration using uncertainty analysis, Measurement systems analysis (MSA), analysis of ...
Jozef Petrík
doaj   +3 more sources

Home - About - Disclaimer - Privacy