Results 41 to 50 of about 174,051 (288)

On the speed of fast and slow rupture fronts along frictional interfaces [PDF]

open access: yes, 2015
The transition from stick to slip at a dry frictional interface occurs through the breaking of the junctions between the two contacting surfaces. Typically, interactions between the junctions through the bulk lead to rupture fronts propagating from weak ...
Malthe-Sørenssen, Anders   +4 more
core   +3 more sources

Transfer of Energy and Momentum Between Magnetoactive Surface Microstructure and a Solid Object

open access: yesAdvanced Engineering Materials, EarlyView.
We demonstrate that magnetoactive multilamellar arrays subjected to a rotating magnetic field can function as platforms for controlled transport of physical objects. Through systematic experimental investigation, we elucidate the underlying physical mechanisms determining the upper limit of the achievable transportation speed in such magnetic “conveyor‐
Arne Geldof   +9 more
wiley   +1 more source

Using individual tractor wheel drive through electric traction

open access: yesСельскохозяйственные машины и технологии
In agriculture, tractors serve as the principal machinery for performing traction and driving operations. They are mainly powered by diesel engines with an efficiency of about 40 percent.
А. V. Bizhaev   +3 more
doaj   +1 more source

Public Priorities: Deficit Rising, Terrorism Slipping [PDF]

open access: yes, 2012
Presents - by age, gender, political affiliation, and income - survey findings about Americans' priorities with respect to domestic and foreign policy issues as well as economic, fiscal, social, national security, and environmental ...

core  

Dynamics of the Transition corona [PDF]

open access: yes, 2014
Magnetic reconnection between open and closed magnetic field in the corona is believed to play a crucial role in the corona/heliosphere coupling. At large scale, the exchange of open/closed connectivity is expected to occur in pseudo-streamer structures.
DeLuca, Ed   +4 more
core   +3 more sources

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Association between Slip Severity and Muscle Synergies of Slipping

open access: yesFrontiers in Human Neuroscience, 2017
Falls impose significant negative impacts to the US population and economy. A significant number of falls may be prevented via appropriate slip-responses since a strong relation exists between slips and falls.
Mohammad Moein Nazifi   +3 more
doaj   +1 more source

Distribution of Electrical Resistivity in Single Carbon Fiber Filaments and Its Correlation With Tensile Modulus

open access: yesAdvanced Engineering Materials, EarlyView.
A statistical framework is applied to quantify the distribution of electrical resistivity among individual filaments of two commercially available carbon fiber types. Correlations between filament resistivity, tensile modulus, and diameter are examined and complemented by TEM analysis to provide new insight into filament‐level variability relevant for ...
Nils Wieja   +9 more
wiley   +1 more source

Observer-Based Adaptive Tracking Control of Wheeled Mobile Robots With Unknown Slipping Parameters

open access: yesIEEE Access, 2019
Based on wheeled mobile robots (WMRs) with unknown longitudinal slipping parameters, an adaptive control strategy for a tracked mobile robot is presented, in which the longitudinal slipping of the left and right wheels are described by two unknown ...
Mingyue Cui
doaj   +1 more source

Slipping friction of an optically and magnetically manipulated microsphere rolling at a glass-water interface

open access: yes, 2008
The motion of submerged magnetic microspheres rolling at a glass-water interface has been studied using magnetic rotation and optical tweezers combined with bright-field microscopy particle tracking techniques.
Caroli C.   +6 more
core   +1 more source

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