Results 31 to 40 of about 25,310 (261)

FRICTION COEFFICIENT DISPLAYED BY FOOTWEAR WALKING AGAINST RUBBER FLOORING FITTED BY CYLINDRICAL TREADS [PDF]

Journal of the Egyptian Society of Tribology, 2011
There is an increasing demand to investigate proper solutions for reducing slip and fall accidents. The friction of footwear on floor coverings is responsible of the occurrence of slips and falls.
Y. M. El-Sherbiny, M. K. Mohamed, W. Y. Ali   +2 more
doaj   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Effect of SiC Content on Microstructure and Wear Resistance of Laser Cladding SiC/Ni60A Composite Coating

Cailiao gongcheng, 2017
The SiC reinforced Ni60A alloy laser cladding coating on the 45 steel substrate was fabricated with the LDM2500-60 semiconductor laser equipment. The effect of SiC content on microstructure, dilution rate, wear resistance, friction coefficient and ...
ZHAO Long-zhi, LIU Wu, LIU De-jia, ZHAO Ming-juan, ZHANG Jian   +4 more
doaj   +1 more source

INFLUENCE OF REINFORCING POLYMETHYL METHACRYLATE BY CARBON FIBRES ON FRICTION AND WEAR [PDF]

Journal of the Egyptian Society of Tribology, 2017
The present work aims to investigate the influence of reinforcing polymethyl methacrylate (PMMA) by continuous carbon fibres (CF) on the friction coefficient and wear resistance.
A. A. Ibrahim
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

A methodological approach of estimating resistance to flow under unsteady flow conditions [PDF]

Hydrology and Earth System Sciences, 2015
This paper presents an evaluation and analysis of resistance parameters: friction slope, friction velocity and Manning coefficient in unsteady flow.
M. M. Mrokowska, P. M. Rowiński, M. B. Kalinowska   +2 more
doaj   +1 more source

Research on borehole repair model and working parameters optimization of self-propelled rotary excavator

Frontiers in Earth Science, 2023
The collapse or plugging of gas extraction borehole can result in partial or complete failure of the extraction function, affecting the efficiency of gas extraction and increasing project costs.
Mian Wang, Mian Wang, Mian Wang, Pengyu Guo, Pengyu Guo, Wenxin Dong, Wenxin Dong, Fan Yang, Fan Yang   +8 more
doaj   +1 more source

Evaluation of airfield pavement micro and macrotexture in the light of skid resistance (friction coefficient) measurements [PDF]

MATEC Web of Conferences, 2019
Appropriate skid resistance properties of airfield pavements are extremely important in terms of the safety of air operations. When discussing skid resistance properties of airfield pavements, we should not limit the subject only to the friction coefficient, which determines the state of its roughness.
Wesołowski Mariusz, Blacha Krzysztof
openaire   +2 more sources

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source