Results 111 to 120 of about 2,071 (285)

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

Advanced 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, Kun‐Hao Yu, Ji Yoon Bae, Yunchan Lee, Dorit Aviv, Shu Yang   +5 more
wiley   +1 more source

Analysis on Cage Dynamic Characteristic of Angular Contact Ball Bearing During Deceleration

Jixie chuandong, 2019
The deceleration process generally exists in the feed system of CNC machine, and the speed change of the process has a great influence on the dynamic performance of angular contact ball bearing, which has always been little noticed by scholars at home ...
Wenbing Tu, Haibin He, Leping Liu, Ya Luo   +3 more
doaj  

Frictional Torque Characteristic of Angular Contact Ball Bearings

Journal of Mechanical Engineering, 2011
Based on the dynamics and thermodynamic analysis of angular contact ball bearings,the theoretical computational formulae of the friction torque of angular contact ball bearings are obtained with the law of energy conservation.The theoretical analysis and the experimental verification for the effects of the structural parameters,operation condition on ...
openaire   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Analysis on Cage Dynamic Characteristic of Roller Bearing Under the Condition of Simple Harmonic Rotational Speed Fluctuation

Jixie chuandong, 2019
The rotational speed fluctuation will worsen the internal contact state of roller bearings，which has important influence on the dynamic characteristics of cage. Considering the characteristic of periodic fluctuation of rotational speed of roller bearings，
Leping Liu, Haibin He, Wenbing Tu, Ya Luo   +3 more
doaj  

Clustomesogen Showing Sub‐Zero Liquid Crystal Properties: Supramolecular Assembly Between Cs2[Mo6Ii8(OCOC2F5)6] and Hexaethylenoxide Containing Mesogenic Dimers

Advanced Materials, EarlyView.
Associating a red‐NIR phosphorescent octahedral hexanuclear molybdenum cluster compound with hexaethyleneoxide chains bearing mesogenic units on both ends leads to an emissive hybrid liquid crystal showing mesomorphism on a very unusual temperature range down to −25°C.
Killiann Heinz, Jeanne Rebours, Zoulikha Zerrouqi, Noée Dumait, Maria Amela‐Cortes, Nikolai Scheuring, Sara Simonovska, Sebastian Marino, Max Ebert, Stéphane Cordier, Sabine Laschat, Yann Molard   +11 more
wiley   +1 more source

Study on Cage Stability of Solid-Lubricated Angular Contact Ball Bearings in an Ultra-Low Temperature Environment

Lubricants
In the ultra-low temperature environment, the material properties of the bearing change, which puts forward higher requirements for the dynamic performance of the bearing cage.
Bing Su, Han Li, Guangtao Zhang, Fengbo Liu, Yongcun Cui   +4 more
doaj   +1 more source

Single Crystals of Perylene Diimide‐Based Two‐Dimensional Covalent Organic Frameworks

Advanced Materials, EarlyView.
Synthesizing extended crystals of two‐dimensional covalent organic frameworks (2D COFs) has remained a major challenge. Here, we report a high‐temperature double‐modulator strategy that provides access to new perylene diimide (PDI)‐based COFs with crystal sizes of up to 50 µm.
Ling Zhang, Zixuan Chen, Lukas Mühlnickel, Lukas Sporrer, Jakub D. Jasinski, Megha Koottungal, Kevin Synnatschke, Paul‐Felix Jordan, Silvia Paasch, Eike Brunner, Zhehao Huang, Alexey Chernikov, Florian Auras   +12 more
wiley   +1 more source

Modeling Vibration Stiffness: An Analytical Extension of Hertzian Theory for Angular Contact Bearings with a Thin Viscoelastic Coating

This thesis considers the novel angular contact rolling-element bearings proposed by NASA’s Glenn Research Center, which are coated with a thin solid lubricant that exhibits viscoelastic behavior.
Burton, Davis R.
core  

Experimental method of determining torque resistance of angular contact ball bearings

, 2018
W artykule przedstawiona została eksperymentalna metoda określania oporów ruchu łożysk kulkowych skośnych, w tym stanowisko pomiarowe oraz otrzymane wyniki. Badano wpływ zarówno napięcia wstępnego jak i prędkości obrotowej na całkowity moment oporu ruchu
Muszyński, M., Kosmol, J.
core