Results 1 to 10 of about 32,208,061 (148)

Experimental study of the torsional effect for yarn break load test of polymeric multifilaments

open access: yesActa Polytechnica, 2022
Polymeric multifilaments have gained a significant interest in recent decades. In the studies of mechanical characteristics, although there are different types of tests, such as rupture, abrasion, creep, impact and fatigue, it can be said that the main ...
Daniel Magalhães da Cruz   +2 more
doaj   +1 more source

Post-impact mechanical characterization of HMPE yarns

open access: yesActa Polytechnica, 2021
The present work evaluates the mechanical behaviour of High Modulus Polyethylene (HMPE) yarns after being impacted by sudden axial loads. The influence of loading conditions on the structural integrity of yarns is assessed by tensile, fatigue, and creep ...
Eduarda da Silva Belloni   +2 more
doaj   +1 more source

A Method for Comparing the Fatigue Performance of Forged AZ80 Magnesium

open access: yesMetals, 2021
A closed die forging process was developed to successfully forge an automotive suspension component from AZ80 Mg at a variety of different forging temperatures (300 °C, 450 °C).
Andrew Gryguć   +9 more
doaj   +1 more source

Multi-Omics Comparison of the Spontaneous Diabetes Mellitus and Diet-Induced Prediabetic Macaque Models

open access: yesFrontiers in Pharmacology, 2021
The prevalence of diabetes mellitus has been increasing for decades worldwide. To develop safe and potent therapeutics, animal models contribute a lot to the studies of the mechanisms underlying its pathogenesis.
Zhu Yang   +8 more
doaj   +1 more source

Split sleeve cold expansion of AZ31B sheet: Microstructure, texture and residual stress

open access: yesMaterials & Design, 2020
Despite magnesium limited formability at room temperature, split sleeve hole cold expansion of AZ31B sheet was successfully implemented. Microstructural analysis showed greater hardness in the immediate vicinity of the notch, which was due to high ...
Sasan Faghih   +3 more
doaj   +1 more source

Prevalence of stress, anxiety, depression among the general population during the COVID-19 pandemic: a systematic review and meta-analysis

open access: yesGlobalization and Health, 2020
Background The COVID-19 pandemic has had a significant impact on public mental health. Therefore, monitoring and oversight of the population mental health during crises such as a panedmic is an immediate priority.
N. Salari   +7 more
semanticscholar   +1 more source

Dreaddit: A Reddit Dataset for Stress Analysis in Social Media [PDF]

open access: yesConference on Empirical Methods in Natural Language Processing, 2019
Stress is a nigh-universal human experience, particularly in the online world. While stress can be a motivator, too much stress is associated with many negative health outcomes, making its identification useful across a range of domains.
Elsbeth Turcan, Kathy Mckeown
semanticscholar   +1 more source

A domain-decomposition generalized finite difference method for stress analysis in three-dimensional composite materials

open access: yesApplied Mathematics Letters, 2020
In this paper, a new framework for stress analysis of three-dimensional (3D) composite (multi-layered) elastic materials is presented. In our computations, the composite material is firstly decomposed into several sub-domains by using the domain ...
Yuanyuan Wang, Yan Gu, Jianlin Liu
semanticscholar   +1 more source

Corrosion Protection of ZK60 Wrought Magnesium Alloys by Micro-Arc Oxidation

open access: yesMetals, 2022
The influences of the forging process and micro-arc oxidation (MAO) coating on the corrosion behavior of ZK60 wrought magnesium alloys exposed to salt spray and constant stress corrosion conditions were investigated.
Yuna Xue   +5 more
doaj   +1 more source

Comparison of Residual Stress Measurements Conducted by X-ray Stress Analysis and Incremental Hole Drilling Method

open access: yesJournal of thermal spray technology (Print), 2020
The level of residual stresses is of great importance for many applications. In this work, the two established residual stress analysis methods x-ray stress analysis and incremental hole-drilling combined with electronic speckle pattern interferometry ...
K. Bobzin   +6 more
semanticscholar   +1 more source

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