Results 91 to 100 of about 312,116 (298)

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

Friction force on a vortex due to the scattering of superfluid excitations in helium II

, 2002
The longitudinal friction acting on a vortex line in superfluid $^4$He is investigated within a simple model based on the analogy between such vortex dynamics and that of the quantal Brownian motion of a charged point particle in a uniform magnetic field.
C.F. Barenghi, D. M. Jezek, D.C. Samuels, D.J. Thouless, D.P. Arovas, E. Demircan, E.B. Sonin, G.W. Rayfield, H. M. Cataldo, H.E. Hall, H.M. Cataldo, H.M. Cataldo, H.M. Cataldo, J.-M. Tang, J.D.P. Van Dijk, J.M. Duan, L.P. Pitaevskii, P.O. Fedichev, Q. Niu, R. Sasik, R.J. Donnelly, S.V. Iordanskii   +21 more
core   +1 more source

Friction coefficient and error test via micro-rotation mechanics model

Theoretical and Applied Mechanics Letters, 2012
AbstractAn air pressure-loading mode incorporated into the friction apparatus is firstly applied to coatings tribology involving large load, automation, stepless and continuous loading processes. A novel measurement principle is proposed and a micro-rotation mechanics model was developed for high precision measurement of friction coefficient.
Chen, Zhitong, Li, Guang, Xia, Yuan
openaire   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

A mathematical model of a bolted connection based on Florida contact theory to study the influence of the friction coefficient on structural performance

Advances in Mechanical Engineering, 2019
Bolted joints are widely used for the mechanical assembly of engineering structures and friction coefficient of the contact surface of a bolted connection is the main factor that influences its structural performance. This article presents a mathematical
Wenxiang Xu, Zhifeng Liu, Qiang Cheng, Huaxiong Chen, Yongsheng Zhao, Ying Li   +5 more
doaj   +1 more source

Ceramic Particle‐Reinforced Medium‐Entropy Alloys With Outstanding Mechanical Properties Prepared by Novel Micro‐LPBF

Advanced Functional Materials, EarlyView.
An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley   +1 more source

Properties data for opening the Galileo's partially unfurled main antenna [PDF]

An investigation was conducted into the friction and wear behavior of both unlubricated and dry-film-lubricated (Tiolube 460) titanium alloy (Ti-6Al-4V) in contact with an uncoated high-nickel-content superalloy (Inconel 718) both in vacuum and in air ...
Miyoshi, Kazuhisa, Pepper, Stephen V.
core   +1 more source

Predicting Atomic Charges in MOFs by Topological Charge Equilibration

Advanced Functional Materials, EarlyView.
An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi, Sumukh Shankar Sharadaprasad, Rochus Schmid   +2 more
wiley   +1 more source

Influence of Load on Friction Moment in Roller Screw

Jixie chuandong, 2016
Firstly,the contact characteristic in the roller screw is introduced. Based on the Hertzian contact theory and the load distribution regulation of the roller screw,the model of friction moment is analyzed.
Fu Yongling, Gan Fajin, Qi Xiaoye, Wang Deyi   +3 more
doaj  

The Role of Solid Friction in the Sedimentation of Strongly Attractive Colloidal Gels

, 2006
We study experimentally and theoretically the sedimentation of gels made of strongly aggregated colloidal particles, focussing on the long time behavior, when mechanical equilibrium is asymptotically reached.
Christian Ligoure, Dowson D, Evans R M L, Janssen H A, Jean-Michel Condre, Larson R G, Lin M Y, Luca Cipelletti, Parker A, Poon W C K, Starrs L   +10 more
core   +3 more sources