Results 21 to 30 of about 617,967 (333)

Improving the quality of Al-Si castings by using ceramic filters

open access: yesProduction Engineering Archives, 2020
The use of cast aluminium has still increased, so have the mechanical property requirements. By casting and also in other metallurgical processes, the inclusions enter to the molten aluminium alloy and it exhibits poor ductility or toughness.
Švecová Ivana   +2 more
doaj   +1 more source

CORROSIVE TRENDS OF MINERAL OILS AND EFFECTS OF SUCH DISTINCTIVE COMPOSITES ON THE METALS [PDF]

open access: yesEuropean Journal of Materials Science and Engineering, 2019
The investigations of the impact of corrosive properties in mineral oils on the corrosion rates of different types of metals and the nature of such corrosion with respect to the corrosive compounds of mineral oils and the metal types were the aims and ...
Jagath K. PREMACHANDRA
doaj   +1 more source

Statistical models for estimating the uniaxial compressive strength and elastic modulus of rocks from different hardness test methods

open access: yesHeliyon, 2021
In engineering projects (dams, tunnels, slope stability) the strength characteristics of the rocks affect the construction operations. It is sometimes difficult, time-consuming, and expensive to evaluate the engineering properties of solid rocks by ...
Ahmet Teymen
doaj  

Innovation of hardness tester mechanism and its functionality test

open access: yesMATEC Web of Conferences, 2018
The article is focused on constructional design of device mechanism innovation. In the introduction is describe device and his original mechanism. Next section is focused on constructional design of device mechanism innovation and his describe.
Bárnik František   +2 more
doaj   +1 more source

Hard Negative Examples are Hard, but Useful [PDF]

open access: yes, 2020
Triplet loss is an extremely common approach to distance metric learning. Representations of images from the same class are optimized to be mapped closer together in an embedding space than representations of images from different classes. Much work on triplet losses focuses on selecting the most useful triplets of images to consider, with strategies ...
Hong Xuan   +3 more
openaire   +3 more sources

Influence of heat treatment on the wear resistance of the ZnAl40Cu1.5Ti1.5 alloy

open access: yesArchives of Metallurgy and Materials, 2017
Zn-Al-Cu alloys are predominantly used due to their tribological properties. One of the crucial issues related to the use of Zn-Al alloys is their dimensional instability.
Michalik R., Iwaniak A., Wieczorek J.
doaj   +1 more source

Research on Tensile Behaviour of New Structural Material MoNiCa

open access: yesMedžiagotyra, 2019
This article presents the results of a set of innovative research to analyse a new structural material – steel like austempered ductile cast iron with mechanical properties similar to heat-treated steel, and with technological and exploitation ...
Aliaksandr BAHDANOVICH   +12 more
doaj   +1 more source

Determination of the absolute hardness of electrolytically produced copper coatings by application of the Chicot-Lesage composite hardness model [PDF]

open access: yesJournal of the Serbian Chemical Society, 2022
In this study, a novel procedure, based on application of the Chicot–Lesage (C–L) composite hardness model, was proposed for the determination of an absolute hardness of electrolytically produced copper coatings.
Mladenović Ivana O.   +4 more
doaj   +1 more source

Evaluation of Surface Mechanical Properties and Grindability of Binary Ti Alloys Containing 5 wt % Al, Cr, Sn, and V

open access: yesMetals, 2017
This study aimed to investigate the relationship between the surface mechanical properties and the grindability of Ti alloys. Binary Ti alloys containing 5 wt % concentrations of Al, Cr, Sn, or V were prepared using a vacuum arc melting furnace, and ...
Hae-Soon Lim   +5 more
doaj   +1 more source

Hardness of Mastermind

open access: yes, 2012
Mastermind is a popular board game released in 1971, where a codemaker chooses a secret pattern of colored pegs, and a codebreaker has to guess it in several trials.
Viglietta, Giovanni
core   +2 more sources

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