Results 21 to 30 of about 31,666 (162)

On the Load Dependence of Micro-Hardness Measurements: Analysis of Data by Different Models and Evaluation of Measurement Errors

open access: yesArchives of Metallurgy and Materials, 2016
The influence of applied loads between 0.09807 N and 0.9807 N on measured values of micro-hardness was evaluated by Meyer’s index n, proportional specimen resistance model (PSR) and Hays – Kendall methods, Total Dispersion Zone and Analysis of Variance ...
Petrík J.
doaj   +1 more source

Surface Modification of Red Brass Alloy by Using Laser Technique [PDF]

open access: yesEngineering and Technology Journal, 2016
Laser shock processing technique was performed on red brass alloy type C83300 specimens for the purpose ofstudy its effect on the mechanical properties such as micro-hardness and surface roughness. LSP experimental setup system involved Q-switched Nd:YaG
Abdulhadi Kadhim   +2 more
doaj   +1 more source

Micro-hardness of surface layer of irradiated polypropylene [PDF]

open access: yesProceedings of the 2016 International Conference on Innovative Material Science and Technology (IMST 2016), 2016
Using high doses of beta radiation for polypropylene (PP) and its influence on the changes of micromechanical properties of surface layer has not been studied in detail so far. The specimens of PP were made by injection moulding technology and irradiated by high doses of beta radiation (0, 33, and 66 kGy).
Maňas, David   +7 more
openaire   +2 more sources

Influence of laser and laser-ultrasonic treatments on the durability varying of steel friction surfaces

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
The damage of the sliding friction surfaces of constructional steel 40Kh over the stainless steel 12Kh18N10T is researched. From the comparison of the damage processes for steel 40Kh in its initial annealed state, after the laser and laser-ultrasonic ...
G. D. Gureev, D. M. Gureev
doaj   +1 more source

10 Effect of pulse current on micro-hardness and wear performance of cold-rolled T2 copper sheet

open access: yesMaterials Research Express, 2020
The effect of pulse current assisted rolling on the micro-hardness and wear properties of T2 copper sheet was studied. The micro-hardness of copper sheet with pulse current assisted rolling was measured, and the hardness values of the copper sheet at ...
Hao Song   +5 more
doaj   +1 more source

Effect of Structural and Phase Changes under Relativistic Electron Pulsed Beam Irradiation on the Aluminum Alloys Micro-hardness

open access: yesФізика і хімія твердого тіла, 2021
The paper studies the distinctive features of micro-hardness value changes in the zone of industrial aluminum alloy 1933 and alloy 1380 irradiated by the relativistic electron beam.
V.V. Bryukhovetsky   +6 more
doaj   +1 more source

Effect of Sn Addition on Phase Transformation Behavior of Equiatomic Ni-Ti Shape Memory Alloy

open access: yesمجلة بغداد للعلوم, 2020
Sn effect on the phase transformation behavior, microstructure, and micro hardness of equiatomic Ni-Ti shape memory alloy was studied. NiTi and NiTiSn alloys were produced using vacuum induction melting process with alloys composition (50% at. Ni, 50% at.
Ali Abadi aljubouri   +2 more
doaj   +1 more source

In Vitro Evaluation of Enamel Microhardness after Application of Two Types of Fluoride Varnish [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2017
Introduction: Use of fluoride compounds is one of the most effective ways of preventing decay and among these varnishes have high acceptance among different fluoride products.
Fatemeh Molaasadolah   +3 more
doaj   +1 more source

Micro-hardness measurement of photopolymer in stereolithography.

open access: yesJournal of Photopolymer Science and Technology, 1997
The curing of liquid photopolymer is determined by the exposure (optical energy) deposited. In laser stereolithography, laser exposure is considered as non-homogenous within the radiation area. In order to investigate the difference of the cure degree within the cross section of a single cured strand, a micro-structure was evaluated by hardness ...
Yi XU, Masato IMAMURA, Takeo NAKAGAWA
openaire   +2 more sources

PENGARUH LAMA APLIKASI DAN WAKTU PERENDAMAN GIGI DENGAN JUS BUAH PIR TERHADAP PERUBAHAN WARNA DAN KEKERASAN MIKRO

open access: yesODONTO: Dental Journal, 2016
Background: Teeth discoloration is considered disturbing performance, therefore bleaching become an option for teeth whitening. Hydrogen Peroxide (H2O2) is commonly used, it is beneficial for teeth whitening but in other hand it has adverse effectin ...
Dewi Ratma Utami   +2 more
doaj   +1 more source

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