Results 71 to 80 of about 14,864 (294)

Sensitivity Analysis of Holdback Bar Release Load during Catapult-Assisted Takeoff of Carrier-Based Aircraft

open access: yesApplied Sciences, 2022
The release load of holdback bar will affect the safety of catapult-assisted takeoff of carrier-based aircraft, and the accurate control of releasing the load will ensure success.
Enze Zhu, Zhipeng Zhang, Hong Nie
doaj   +1 more source

New‐Era Polymer Thermoelectrics: Material Innovations, Doping Frontiers, Decoupling Strategies, and Unconventional Applications

open access: yesAdvanced Materials, EarlyView.
The field of polymer thermoelectrics is entering a new era, featuring breakthroughs in addressing the conventional performance disparity between p‐type and n‐type polymers, pioneering doping frontiers, and sophisticated decoupling strategies. This review explores innovations in molecular design and superior stabilities, bridging the gap from ...
Suhao Wang
wiley   +1 more source

A method for determination of kinetic friction coefficient under dynamic loading conditions [PDF]

open access: yes, 2022
In general, the kinetic friction coefficient can, under any contact loading condition, be determined using methods completely different from the existing methods based on the measurements of contact load and friction force.
Kočović, Vladimir   +4 more
core   +1 more source

Softness Perception Interfered by Friction in Gliding Virtual Surfaces

open access: yesIEEE Access
Recent studies have shown that surface friction affects softness perception when objects are slid over using fingers. This study examines whether this phenomenon extends to interactions with virtual objects using a stylus-based haptic interface, which ...
Hongbo Wang, Shogo Okamoto
doaj   +1 more source

Elephant‐Skin‐Inspired Porous Cementitious Tiles with Programmable Crack Networks for Passive Cooling

open access: yesAdvanced Materials, EarlyView.
Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang   +5 more
wiley   +1 more source

Choose Wisely: Static or Kinetic Friction—The Power of Dimensionless Plots

open access: yes, 2009
Consider a problem of sliding blocks, one stacked atop the other, resting on a friction-less table. If the bottom block is pulled horizontally, nature makes a choice: if the applied force is small, static friction between the blocks accelerates the ...
Ludwigsen, Daniel O.   +3 more
core   +2 more sources

Experimental Study on the Transition between Static and Kinetic Frictions of Steel/Shale Pairs

open access: yesShock and Vibration, 2021
The transition between static and kinetic frictions of steel/shale pairs has been studied. It was found that the coefficient of friction decreased exponentially from static to dynamic friction coefficient with increasing sliding displacement.
Qin Lian, Chunxu Yang, Jifei Cao
doaj   +1 more source

The Kinetic Friction on Snow and Ice [PDF]

open access: yesJournal of Glaciology, 1977
AbstractThis paper presents many experimental data of friction between a slider and snow or ice in relation to ski-ing and skating. Measurements of the kinetic coefficient of friction μk for a metallic or plastic-resin ring in contact with a snow surface were made using an oscillograph.
openaire   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena   +3 more
wiley   +1 more source

THE COEFFICIENTS OF STATIC AND KINETIC FRICTION USING ARDUINO [PDF]

open access: yes
The friction coefficient plays an essential role in various aspects of daily life. In transportation safety, the friction coefficient between vehicle tires and the road is critical for safety.
Prima, Eka Cahya, Hartono, Rudi
core   +1 more source

Home - About - Disclaimer - Privacy