Results 31 to 40 of about 467,539 (292)

Experimental Verification of the Boundary Element Method for Adhesive Contacts of a Coated Elastic Half-Space

open access: yesLubricants, 2023
We consider analytical, numerical, and experimental approaches developed to describe the mechanical contact between a rigid indenter and an elastic half-space coated with an elastic layer.
Iakov A. Lyashenko   +2 more
doaj   +1 more source

Multiphysics models for friction stir welding simulation [PDF]

open access: yes, 2013
Purpose: The Friction Stir Welding (FSW) process comprises of several highly coupled (and non-linear) physical phenomena: large plastic deformation, material flow transportation, mechanical stirring of the tool, tool-workpiece surface interaction ...
Li, Hongjun   +2 more
core   +3 more sources

Microstructure and mechanical properties of refill friction stir spot welded joints: Effects of tool size and welding parameters

open access: yesJournal of Materials Research and Technology, 2022
A novel refill friction stir spot welding (RFSSW) technique employing large-sized tools is proposed. The microstructure and mechanical properties of joints produced with a large-sized welding tool and a conventional tool are compared.
Yangfan Zou   +5 more
doaj   +1 more source

Structural friction anisotropy on the nanometer scale [PDF]

open access: yes, 2013
The ability to understand and control friction on an atomic scale is becoming increasingly important, not only considering the increasingly small scale of mechanical systems that are being developed, but also in respect of furthering the fundamental ...
Fessler, Gregor
core   +1 more source

Environmental effects on the wear characteristics of phenolic resin composite (Confirmation of water vapor effects and proposal of tribo-degraded gas effects)

open access: yesNihon Kikai Gakkai ronbunshu, 2016
For the purpose of clarifying the water vapor effect on brake pad wear, two experiments were performed. In the first set of experiments, wear tests were conducted using four pads under three relative humidity conditions (0.8%RH, 35%RH and 65%RH).
Katsuya OKAYAMA   +2 more
doaj   +1 more source

Contact mechanics and friction: Role of adhesion

open access: yesFriction
This paper presents an overview of the role of adhesion in various tribological phenomena. We discuss (1) adhesion and adhesive hysteresis in rough contacts, (2) adhesive contribution to dry friction, (3) properties of adhesive contacts under tangential ...
Valentin L. Popov   +2 more
doaj   +1 more source

Voltage-Induced Friction with Application to Electrovibration

open access: yesLubricants, 2019
Due to the growing interest in robotic and haptic applications, voltage-induced friction has rapidly gained in importance in recent years. However, despite extensive experimental investigations, the underlying principles are still not sufficiently ...
Markus Heß, Valentin L. Popov
doaj   +1 more source

Superhydrophobic frictions [PDF]

open access: yesProceedings of the National Academy of Sciences, 2019
Significance The matchless mobility of water on superhydrophobic materials is often considered as the hallmark of water repellency. The friction of drops is indeed found to be unusual: instead of observing classical friction such as due to contact line and liquid viscosity, we show that the main source of resistance to the water ...
Mouterde, Timothée   +3 more
openaire   +5 more sources

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Research progress in inertia friction welding of nickel-based superalloys

open access: yesCailiao gongcheng
Nickel-based superalloys are widely used in high-temperature turbine components of aviation engines, and inertia friction welding (IFW) is widely used for the connection of nickel-based superalloy disc and shaft due to its solid-phase bonding property ...
MA Xiaopeng, XU Yaxin, LI Wenya
doaj   +1 more source

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