Results 101 to 110 of about 192,306 (299)

Динамічне регулювання питомих навантажень в парах тертя стрічково-колодкових гальм бурових лебідок [PDF]

, 2010
Наведено конструктивні принципи динамічного перерозподілу питомих навантажень в парах тертя стрічково-колодкового гальма при компоновці секціями рухомих фрикційних накладок на дузі охоплення гальмівною стрічкою шківа.Structural principles of dynamic ...
Бачук, І. В., Бекіш, І. О., Бурда, Ю. М., Вольченко, Д. О.   +3 more
core  

Static and Dry Friction due to Multiscale Surface Roughness

, 2008
It is shown on the basis of scaling arguments that a disordered interface between two elastic solids will quite generally exhibit static and "dry friction" (i.e., kinetic friction which does not vanish as the sliding velocity approaches zero), because of
C. Grossiord, C. Kittel, G. A. Tomlinson, G. C. Spencer, J. B. Sokoloff, J. Feder, J.-M. Martin, J.-M. Martin, K. L. Johnson, M. Brillouin, M. H. Muser, M. Hirano, N. W. Ashcroft, P. Lemoine, S. Aubry   +14 more
core   +1 more source

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source

High-Temperature Tribological Behavior of the Ti-22Al-25Nb (at. %) Orthorhombic Alloy with Lamellar O Microstructures

Metals, 2018
Tribological behavior of the isothermally forged and heat-treated Ti-22Al-25Nb (at. %) orthorhombic alloy with lamellar O microstructures was investigated. The friction experiments using a tribometer (UMT-3 CETR) against Si3N4 and Al2O3 were conducted at
Wei Wang, Haixiong Zhou, Qingjuan Wang, Jie Jin, Yaling Sun, Kuaishe Wang   +5 more
doaj   +1 more source

Design of Superlubricity System Using Si₃N₄/Polyimide as the Friction Pair and Nematic Liquid Crystals as the Lubricant. [PDF]

Polymers (Basel), 2023
Gao X, Cheng Y, Shi M, Chen H, Wu L, Wang T.   +5 more
europepmc   +1 more source

Toughening β‐Ga2O3 via Mechanically Seeded Dislocations

Advanced Functional Materials, EarlyView.
β‐Ga2O3 is promising for next‐generation semiconductors but its brittleness limits flexible and high‐precision applications. Here, mechanically seeded dislocations introduced by surface deformation improved damage tolerance in (001) β‐Ga2O3. Nanoindentation and characterization show dislocations suppress cleavage cracks by enabling stable plastic ...
Zanlin Cheng, Jiawen Zhang, Peng Gao, Guosong Zeng, Xufei Fang, Wenjun Lu   +5 more
wiley   +1 more source

Stereometric and Tribometric Studies of Polymeric Pin and Ceramic Plate Friction Pair Components. [PDF]

Materials (Basel), 2021
Niemczewska-Wójcik M, Wójcik A.
europepmc   +1 more source

Crystal cleaving machine [PDF]

, 1982
A machine is disclosed for cleaving hard crystals. A typical example of which is lithium fluoride, with prcision and uniformity and includes vertical axis positioning control means for an adjustable spring tension guided hammer mechanism employed to ...
Benedicto, J. S. J., Hallberg, F. C.
core   +1 more source

Using the fractional interaction law to model the impact dynamics in arbitrary form of multiparticle collisions

, 2004
Using the molecular dynamics method, we examine a discrete deterministic model for the motion of spherical particles in three-dimensional space. The model takes into account multiparticle collisions in arbitrary forms.
D. C. Rapaport, D. Gidaspow, D. S. Rimai, H. J. Herrmann, Jacek S. Leszczynski, K. B. Oldham, M. P. Allen, P. A. Cundall, S. G. Samko, W. H. Press   +9 more
core   +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