Results 51 to 60 of about 5,635 (264)

Pareto Front Optimization for Spiral-Grooved High-Speed Thrust Bearings: Comparison Between Analytical and Numerical Models

Machines
This paper compares two multi-objective optimization strategies for spiral-grooved dynamic gas thrust bearings. The first optimization is carried out using an analytical model, which is valid under the assumption of a high number of grooves.
Federico Colombo, Edoardo Goti, Luigi Lentini   +2 more
doaj   +1 more source

Utilizing an auxiliary portable lube oil heating system in Aliabad Katoul-Iran V94.2 gas turbine during standstill mode: a case study

Propulsion and Power Research, 2019
In a gas turbine power plant, the lubrication oil must be hot enough for the turbine start-up where the unit is in standstill mode. Currently, the strategy to heat the lubrication oil of ANSALDO V94.2 gas turbine power plant is operating the units in ...
H. Hasannejad, Seyyed Masoud Seyyedi, M. Hashemi-Tilehnoee   +2 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Optimization Study of Gear Oil-air Lubrication Parameters Based on Orthogonal Test Method

Jixie chuandong, 2022
In order to provide a feasible lubrication means under starved condition， the gear transmission effect and the optimal oil-air parameters using oil-air lubrication are explored.
Chang Lu, Qi Chen, Qingwei Hou, Zhaqiang Tang   +3 more
doaj  

Surprising Water Slipping Performance on Highly Hydrophilic PEG‐Derived Monolayer‐Covered Surfaces: Preparation, Mechanism, and Application

Advanced Functional Materials, EarlyView.
Highly hydrophilic surfaces (water contact angle, ≈17.7°) exhibiting surprising water slipping performance (sliding angle, ≈7.3°) are successfully prepared via simple chemisorption of polyethylene glycol (PEG) organosilane and subsequent alkali‐treatment.
Hyeonjin Kim, Kouki Akaike, Jerred Wassgren, Hiroshi Kakiuchida, Masahisa Okada, Atsushi Hozumi   +5 more
wiley   +1 more source

Sustainable Electrochemical Synthesis of High‐Quality MXenes: Mechanistic Insights, Applications, Challenges, and Technological Prospects

Advanced Functional Materials, EarlyView.
Electrochemical etching provides an eco‐friendly alternative to hazardous HF methods for MXene production. This approach facilitates the selective isolation of the A‐layer from MAX phases with tunable surface terminations. Controlling voltage, electrolytes, temperature, and duration enables the optimal structural integrity. Nevertheless, existing scale
Jagdeep Singh, Madhusudhana M Devadiga, Santosh K. Tiwari, AS Dhaliwal, Gurpreet Singh Selopal   +4 more
wiley   +1 more source

Thermo-Elasto-Hydrodynamic Characteristics Analysis of Journal Microbearing Lubricated with Rarefied Gas

Micromachines, 2020
Temperature rise and elastic deformation are unavoidable issues occurring in high-speed gas microbearings due to the dominant small-scale fluid dynamics in rarefied gas flow applications.
Yao Wu, Lihua Yang, Tengfei Xu, Wei Wu
doaj   +1 more source

Natural Biomaterials for Osteochondral Repair: From Source to Strategy

Advanced Healthcare Materials, EarlyView.
Biological origin‐guided overview of natural biomaterials and therapeutic strategies for osteochondral tissue engineering. The circular diagram categorizes representative materials and strategies into plant/algae‐derived, microbial‐derived, animal‐derived, and human‐derived sources, centered on an osteochondral defect repair model.
Hengyu Liu, Hanyang Zhang, Wenbo Yang, Hao Chen, Jincheng Wang, Fei Chang   +5 more
wiley   +1 more source

Lubrication Regime Classification of Hydrodynamic Journal Bearings by Machine Learning Using Torque Data

Lubricants, 2018
Hydrodynamic journal bearings are used within a wide range of machines, such as combustion engines, gas turbines, or wind turbines. For a safe operation, awareness of the lubrication regime, in which the bearing is currently operating, is of great ...
Jakob Moder, Philipp Bergmann, Florian Grün   +2 more
doaj   +1 more source

Water Lubrication of Gas Exhausters [PDF]

Journal of Industrial & Engineering Chemistry, 1918
n ...
openaire   +2 more sources