Results 31 to 40 of about 101,136 (260)

Wheels within wheels

open access: yesJournal of Combinatorial Theory, Series B, 1974
AbstractA simple means of representing the structure of all strongly connected directed graphs is developed and applied to a certain problem involving the construction of “toll booths”.
openaire   +2 more sources

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova   +2 more
wiley   +1 more source

Investigation of tractor engine power and economical working conditions utilization during transport operation [PDF]

open access: yesTransport, 2008
Article analyzes tractor working and its engine conditions from economical point of view. Overview of tractor wheel slippage reliance on the traction force and weight utilization coefficient is given.
Antanas Juostas, Algirdas Janulevičius
doaj   +1 more source

Movement of the vehicle being braked when some wheels are incapable of braking or have lost touch with the road surface

open access: yesTransport, 2006
Movement of the vehicle when its certain wheels have lost contact with the surface of the road or cannot be held up through other reasons is considered in the present article.
Ona Lukoševičiene, Edgar Sokolovskij
doaj   +1 more source

Semantic Modeling in Materials Science and Engineering With Platform MaterialDigital Core Ontology 3.0

open access: yesAdvanced Engineering Materials, EarlyView.
The community‐driven Platform MaterialDigital Core Ontology (PMDco) 3.0 is introduced as a Basic Formal Ontology‐aligned semantic backbone for the processing–structure–properties paradigm in Materials Science and Engineering. Modular engineering, automated releases, and validation workflows are highlighted and key semantic patterns for materials ...
Markus Schilling   +15 more
wiley   +1 more source

The Design and Calculation Features of Tandem Friction Clutch of Planetary Gearbox

open access: yesМеханика машин, механизмов и материалов, 2009
The design features of multiplate friction clutches of heavy-duty hydromechanical transmissions with rotating housing by example of MZKT gearboxes are devoted in this article.
Yu.I. Nikolaev   +3 more
doaj  

Analysis of wheel and rail Hertzian and Non-Hertzian contact theories using UM software considering the effect of rail inclination on wheel wear [PDF]

open access: yesInternational Journal of Railway Research, 2021
Wheel-rail interaction has always been one of the issues in the railway industry. In this paper, the effect of Hertzian and non-Hertzian contact theories on the wheel wear due to the rail inclination was investigated. by using the UM software.
M. Aziznia, A. Owhadi, M. Shadfar
doaj  

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri   +11 more
wiley   +1 more source

Two‐Photon Grayscale Lithography (2GL) of High Mechanical and Optical Quality 3D Silica Glass Microstructures

open access: yesAdvanced Functional Materials, EarlyView.
Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider   +4 more
wiley   +1 more source

Development and Experimental Validation of a Thin-Film Thermocouple System for Real-Time Temperature Monitoring and Tool Wear Prediction in Cutting Processes

open access: yesCrystals
A homemade NiCr/NiSi thin-film thermocouple integrated with a PCBN turning tool was developed for real-time temperature monitoring during dry turning of AISI 1045 steel.
Yingyuan Luo   +3 more
doaj   +1 more source

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