Results 1 to 10 of about 55,060 (259)

Vickers hardness prediction from machine learning methods [PDF]

open access: yesScientific Reports, 2022
The search for new superhard materials is of great interest for extreme industrial applications. However, the theoretical prediction of hardness is still a challenge for the scientific community, given the difficulty of modeling plastic behavior of ...
Viviana Dovale-Farelo   +4 more
doaj   +4 more sources

The influence of different storage media on Vickers hardness and surface roughness of CAD/CAM resin composites [PDF]

open access: yesJournal of Materials Science: Materials in Medicine, 2023
Introduction This study examined Vickers hardness as well as surface characteristics of different computer-aided design/computer-aided manufacturing (CAD/CAM) resin composites prior to and after storage in various media.
Florian Fuchs   +3 more
doaj   +2 more sources

Automatic Method for Vickers Hardness Estimation by Image Processing [PDF]

open access: yesJournal of Imaging, 2022
Hardness is one of the most important mechanical properties of materials, since it is used to estimate their quality and to determine their suitability for a particular application. One method of determining quality is the Vickers hardness test, in which
Jonatan D. Polanco   +4 more
doaj   +2 more sources

Vickers Hardness Value Test via Multi-Task Learning Convolutional Neural Networks and Image Augmentation

open access: yesApplied Sciences, 2022
Hardness testing is an essential test in the metal manufacturing industry, and Vickers hardness is one of the most widely used hardness measurements today.
Wan-Shu Cheng   +5 more
doaj   +3 more sources

Effect of Hydrothermal Aging on Mechanical and Microstructural Properties of Zirconia Ceramics [PDF]

open access: yesNanomaterials
The mechanical and microstructural properties of monolithic zirconia ceramics are significant factors for their long-term clinical performance. This study aims to investigate the effects of hydrothermal aging on these properties for the 3Y-TZP, 4Y-TZP ...
Çağlayan Sayla Çelik   +1 more
doaj   +2 more sources

Translation of hardness numbers in testing of surface‑hardened steel products

open access: yesЛитьë и металлургия, 2022
Recalculation formulae of hardness transformation in units of HRC into Vickers hardness HV 30 for hardened and tempered structural steels in ASTM E 140-07 and ISO 18265:2013 were analyzed.
A. L. Valko   +2 more
doaj   +1 more source

Determination of the Effective Thickness of Hardened Layer of Carburized Gears

open access: yesМеханика машин, механизмов и материалов, 2022
The methods are considered for determining the effective thickness of the hardened layer of metal parts listed in the standards STB 2307-2013 and STB ISO 18203-2019.
Sergei P. Rudenko   +2 more
doaj   +1 more source

Asymmetric indentation: problem and solution

open access: yesSN Applied Sciences, 2023
Vickers and Knoop testers are the most common tools used to measure the hardness of materials. However, a very small tilt in the sample surface even in the order of a fraction of a degree produces a noticeable asymmetry, which affects the accuracy of the
M. El-Sayed Ali   +3 more
doaj   +1 more source

The Influence of Particle Size and Reinforcement Rate of B4C on Mechanical and Microstructure Properties of Al-B4C Composites

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2020
In this study, Al-B4C composites were produced with various particle sizes (B4C: 3.5 and 20 µm) and reinforcement rates (B4C%: 1, 3, 6, 9, 12, 15, 30%) by the powder metallurgy method.
Mahmut Can Şenel, Mevlüt Gürbüz
doaj   +1 more source

Conventional Vickers and true instrumented indentation hardness determined by instrumented indentation tests [PDF]

open access: yes, 2010
We evaluate Vickers hardness and true instrumented indentation test (IIT) hardness of 24 metals over a wide range of mechanical properties using just IIT parameters by taking into account the real contact morphology beneath the Vickers indenter ...
Bulychev   +6 more
core   +1 more source

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