Results 41 to 50 of about 19,469 (232)

Jet Engines and Their Lubrication

Journal of the Fuel Society of Japan, 1953
ジエット・エンジンの動作機構を説明し, 各回転部の荷重を考察してこれに要する潤滑方法について述べた。潤滑油の性状も往復エンジンとちがつた特色を持つ必要がある。-60°～260℃の広範囲にわたつて安定な性質を持つ粘度指数の高い油が要求されるわけで, 、米軍規格を主として実用潤滑油の規格を説明した。つぎに米国におけるジエット・エンジン用潤滑油の研究製造について, 硅素樹脂潤滑剤, 石油系潤滑油, 合成潤滑油, グリース, 添加剤などの現状特質について述べている。
openaire   +2 more sources

Polymer Infiltration Into SURMOF Channels Enables Hydrophobic and Solid‐Like Slippery Functional Thin Films

Advanced Functional Materials, EarlyView.
We report a polymer‐chain insertion strategy to fabricate pore‐threaded MOF thin films with precisely tuned surface chemistry and wettability. Grafting n‐alkane chains into the pillared layer Cu2(bdc)2(dabco) MOF thin film's vertical nanochannels enhances water stability, and induces hydrophobicity and lubricant‐free, solid‐like slippery behavior ...
Angana Borbora, Modan Liu, Hartmut Gliemann, Uttam Manna, Christof Wöll   +4 more
wiley   +1 more source

Curvature singularity and film-skating during drop impact

, 2011
We study the influence of the surrounding gas in the dynamics of drop impact on a smooth surface. We use an axisymmetric 3D model for which both the gas and the liquid are incompressible; lubrication regime applies for the gas film dynamics and the ...
Christophe Josserand, Coantic M., Laurent Duchemin   +2 more
core   +3 more sources

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

Research progress on high-efficiency lubrication and cooling technology for aircraft engine main spindle bearings

Hangkong gongcheng jinzhan
Rolling bearings are the critical components of aircraft engines，which require the efficient lubrication and cooling technologies to ensure stable operation under the harsh conditions of high speed，high temperature，and heavy load. Compared to traditional
LIU Zhenxia, ZHU Zetao, JIANG Le, LYU Yaguo, QIN Jingwen   +4 more
doaj   +1 more source

A Synovium‐on‐Chip Platform to Study Multicellular Interactions in Arthritis

Advanced Healthcare Materials, EarlyView.
The Synovium‐on‐Chip comprises a thin microporous PDMS membrane to support co‐culture of fibroblast‐like synoviocytes (FLS), THP‐1‐derived macrophages, and endothelial cells, enabling real‐time analysis of synovial‐vascular interactions. FLS migration through the pores drives endothelial remodeling, while TNF‐α stimulation induces robust inflammatory ...
Laurens R. Spoelstra, Fleur R. Semmekrot, Nuno Araújo‐Gomes, Daniël Wijnperle, Monique M. A. Helsen, Martijn H.J. Van Den Bosch, Loes. I. Segerink, Séverine Le Gac, Marcel Karperien   +8 more
wiley   +1 more source

Numerical Simulation and Experimental Study on the Role of Jet Angle in Controlling the Flow of Transmission Gears

Lubricants
Gears play an important role in modern machinery and are indispensable transmission components, particularly at high speeds, where lubrication is essential for the reliability and efficiency of the gear unit.
Tiangang Zou, Qingdong Yan, Wei Hou, Chunyu Wang, Ziqiang Zhang, Junye Li   +5 more
doaj   +1 more source

Laser‐Based Solidification of Cermets/Cemented Carbides: Processing‐Microstructure‐Property Relationships

Advanced Materials Technologies, EarlyView.
Recent research on laser‐processed cermets and cemented carbides highlights significant advancements, yet a notable paucity of studies and persistent challenges remain. Efforts are increasingly focused on developing low‐cost, environmentally friendly cermets as alternatives to conventional materials.
Himanshu Singh Maurya, Farid Akhtar, Konda Gokuldoss Prashanth   +2 more
wiley   +1 more source

Study of lubricant jet flow phenomena in spur gears: Out of mesh condition [PDF]

, 1983
The penetration depth onto the tooth flank of a jet of oil at different velocities pointed at the pitch line on the outgoing side of mesh was determined. The analysis determines the impingement depth for both the gear and the pinion.
Akin, L. S., Townsend, D. P.
core   +1 more source

Strategies for Enhancing Thermal Conductivity of PDMS in Electronic Applications

Advanced Materials Technologies, EarlyView.
This review explores effective strategies for enhancing heat dissipation in Polydimethylsiloxane (PDMS)‐based composites, focusing on particle optimization, 3D network design, and multifunctional integration. It offers key insights into cutting‐edge methods and simulations that are advancing thermal management in modern electronic devices.
Xiang Yan, Marisol Martin‐Gonzalez
wiley   +1 more source