Results 81 to 90 of about 73,621 (310)

An Experimental Study of Lubrication in Thrust Slide-Bearings of Scroll Compressors - Effect of Thickness and Inside Form of Thrust Plate -

, 2012
The present study focuses on the effect of the thickness and inner form of the thrust plate in a scroll compressor upon the lubrication features. A simplified model of a annular thrust slide-bearing with thinner thrust plate submerged in a refrigerant ...
Anami, Keiko, Tsuji, Takuma, Ishii, Noriaki, Oku, Tatsuya, Nokiyama, Kouichi   +4 more
core  

Efficient finite element simulation of full-system elastohydrodynamic lubrication problems [PDF]

, 2012
This thesis is concerned with the efficient numerical solution of problems of elastohydrodynamic lubrication (EHL). Our approach is to consider fully-coupled models in which the governing equations for the lubricating film, the elastic deformation and ...
Ahmed, Sarfraz
core  

A review of some tribo-dynamics phenomena from micro- to nano-scale conjunctions [PDF]

, 2009
The paper provides some highlights in the developments of theories of lubrication and contact mechanics from early pioneering works of Reynolds and Hertz to the establishment of elastohydrodynamic phenomenon by Ertel and Grubin. Some historical discourse
Teodorescu, M., Rahnejat, Homer, Votsios, V, Homer Rahnejat (1247550), Vasilis Votsios (7203305), M. Teodorescu (7204790), Teodorescu, M, Kushwaha, M, Kushwaha, M., M. Kushwaha (7208627), Rahnejat, H., Votsios, V., Johns-Rahnejat, PM, Johns-Rahnejat, P. M., P.M. Johns-Rahnejat (7208630)   +14 more
core   +1 more source

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

Droplet Electricity Generators With Maximized Energy Collection Zone Enabled by Aloe‐Inspired Midrib and Cuticle

Advanced Materials, EarlyView.
An Aloe‐pinspired droplet electricity generator (A‐DEG) overcomes the limited energy collection zone of conventional DEGs by guiding impact droplets through a channeling midrib and artificial cuticle. The channeling midrib induces uni‐directional droplet spreading, while the artificial cuticle on the midrib further reinforces this behavior through its ...
Gibeom Lee, Eunbyeol Kim, Kyongtae Choi, Minjun Song, Sunmin Jang, Dongwhi Choi, Donghyun Seo, Min‐Gyu Lee, Younghoon Lee   +8 more
wiley   +1 more source

Near-zero-wear with super-hard WB4 and a self-repairing tribo-chemical layer

Communications Materials
Achieving near-zero-wear remains a major challenge in mechanical engineering and material science. Current ultra-low wear materials are typically developed based on the self-consumption strategy.
Guixin Hou, Shengyu Zhu, Hui Tan, Wenyuan Chen, Jiao Chen, Qichun Sun, Juanjuan Chen, Jun Cheng, Peixuan Li, William Yi Wang, Jun Yang, Weimin Liu   +11 more
doaj   +1 more source

Dynamic covalent chemistries of thermosetting polymer for recyclability and intelligent lubrication

Friction
Recently, the focus of materials research has shifted toward intelligent materials and structures with customizable properties and stimulus-responsive functions.
Qihua Wang, Nan Zhang, Xinrui Zhang, Liming Tao, Yaoming Zhang, Zenghui Yang, Tingmei Wang   +6 more
doaj   +1 more source

Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels

Advanced Materials Interfaces, EarlyView.
When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir, Darrius Dias, Jacob Bons, MD Wasek Foysal, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Si3N4 as a biomaterial and its tribo-characterization under water lubrication

, 2016
Hip implant wear is recognised as the main cause of hip implant failure therefore has been widely investigated both experimentally and clinically, demonstrating the coexistence of abrasive, adhesive, fatigue and corrosive wear.
Özmen, Yılmaz
core   +1 more source

Rapid photo‐responsive dynamic disulfide strategy for accessing self‐healing, reconfigurable shape of high‐strength shape memory polyurethane

Responsive Materials
Enabling soft shape memory polyurethane (SMPU) with self‐healing is an effective strategy to extend its service life; however, the tradeoff between high mechanical strength and rapid self‐healing to meet the practical applications remains a challenge ...
Qingxiang Zhang, Jing Yang, Kai Zhou, Nan Zhang, Xianqiang Pei, Xinrui Zhang, Shoubing Chen, Heming Luo, Tingmei Wang, Qihua Wang, Yaoming Zhang   +10 more
doaj   +1 more source