Results 21 to 30 of about 1,197 (135)

Wear Model of a Mechanical Seal Based on Piecewise Fractal Theory

Fractal and Fractional, 2023
In this research, a model is proposed using piecewise fractal theory that considers abrasive and adhesive wear. The model demonstrated improved wear computation accuracy of a contact mechanical seal end face.
Xingya Ni, Jianjun Sun, Chenbo Ma, Yuyan Zhang   +3 more
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels

Advanced Materials Interfaces, EarlyView.
When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir, Darrius Dias, Jacob Bons, MD Wasek Foysal, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

How different national strategies of implementing digital technology can affect teacher educators

Nordic Journal of Digital Literacy, 2018
Over ten years have passed since Norwegian educational reform implemented the use of digital tools as a required basic skill in all subjects and at all levels of Norwegian schools.
Siri Sollied Madsen, Sara Archard, Steinar Thorvaldsen   +2 more
doaj   +1 more source

Competing failure analysis of aircraft connecting-rod-type cabin door retraction mechanism with intermission considered

Xibei Gongye Daxue Xuebao, 2021
A novel competing failure model considering intermission is established in this paper, which is appropriate for aircraft connecting-rod-type cabin door retraction mechanism.
LIU Jingyi, ZHANG Yugang, ZHUANG Xinchen, PANG Huan   +3 more
doaj   +1 more source

Erwin Schrödinger und die Versuchungen der (Wissenschafts‐)Biografik: Vorurteilsgefüge und Mechanismen der Skandalisierung

Berichte zur Wissenschaftsgeschichte, EarlyView.
Since late 2021, serious allegations have been made against physicist Erwin Schrödinger, ranging from pedophilia to serial sexual abuse. These accusations have significantly tarnished the Nobel Prize winner's public reputation. The ongoing debate has repeatedly raised the question of whether, and to what extent, these grave allegations are justified ...
Magdalena Gronau, Martin Gronau
wiley   +1 more source

Investigation of the impact of cycloidal gear pin tooth wear on transmission error in precision planetary cycloidal reducers

International Journal of Metrology and Quality Engineering
In light of the alteration pattern of transmission error following wear of a cycloid gear and needle tooth, this study employs the precision planetary cycloidal 80E reducer as an example.
Xu Hang, Wei Chenzhou, Gui Wei, Yang Shufeng, He Yuanchun, Xie Guiping, Wu Yaoting   +6 more
doaj   +1 more source

Teacher educators’ perceptions of working with digital technologies

Nordic Journal of Digital Literacy, 2018
This article is part of a research project aimed to broaden the understanding of the established gap between policies regarding the use of digital technology and the actual use of digital technology in Norway.
Siri Sollied Madsen, Steinar Thorvaldsen, Sara Archard   +2 more
doaj   +1 more source

Wear‐Mode‐Dependent Tribological Performance of Glass Fiber‐Reinforced Epoxy Composites Modified With Graphene Nanoplatelets

Polymer Composites, EarlyView.
Graphical representation of the wear‐mode‐dependent tribological behavior of graphene nanoplatelet (GNP) modified glass fiber‐reinforced epoxy composites, highlighting the distinct mechanisms governing dry sliding wear and solid particle erosion. ABSTRACT Glass fiber‐reinforced epoxy composites are widely used in structural applications where surface ...
Elif Gültürk, Ruşin Ak, Tunay Fatma Angin   +2 more
wiley   +1 more source

A Numerical Model of Yield Stress Fluid Dynamics in a Mixing Vessel

Applied Rheology, 2002
A numerical study is conducted on the behaviour of yield stress fluids in a mixing vessel equipped with anchor agitator in laminar regime. It is shown that extending a standard Carreau model of shear thinning fluid is a suitable practice.
Marouche M., Anne-Archard D., Boisson H. C.   +2 more
doaj   +1 more source