Results 41 to 50 of about 8,052 (227)
The Promise of Solid Lubricants for a Sustainable Future
Advanced Materials, Volume 38, Issue 8, 6 February 2026.Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Philipp G. Grützmacher +7 more
wiley +1 more source
Coupled two-carrier planetary gearboxes for two- speed drives [PDF]
Machines, Technologies, Materials, 2021 The following paper reviews all the possible cases of coupled two-carrier planetary gears with four external shafts. An emphasis is made on the work of these gears with one degree of freedom, one input and one output shaft and brakes on the other two shafts .
Troha, Sanjin +4 more
openaire +3 more sources
Science and Technology of Nuclear Installations, 2015 Gear and bearing play an important role as key components of rotating machinery power transmission systems in nuclear power plants. Their state conditions are very important for safety and normal operation of entire nuclear power plant.
Xinghui Zhang +3 more
doaj +1 more source
IEEE Access, 2019 Planetary gearbox faults are the leading causes of downtime in wind turbines (WTs). In recent years, numerous and various vibration-based approaches have been put forward for WT gearbox fault detection.
Yi Wang +3 more
doaj +1 more source
Energy Science &Engineering, Volume 14, Issue 2, Page 999-1021, February 2026.This study presents a new control strategy for doubly fed induction generator (DFIG) wind turbine systems to overcome the limitations of traditional direct field control using proportional‐integral (DFOC‐PI) regulators, which are sensitive to coefficient changes and lead to low power quality.
Hamza Gasmi +5 more
wiley +1 more source
Simulation and Experimental Study on Dynamic Characteristic of Planetary Gear Transmission
Jixie chuandong, 2019 In order to solve the problem of high failure rate in the operation of planetary power shift gearbox for engineering vehicles， a dynamics simulation model of planetary gearbox is established based on the dynamics transmission theory， and the rotational ...
Xiaolan Pang
doaj
Experimental Analysis and Physics‐Based Analytical Model on Twisted and Coiled Artificial Muscles
Advanced Engineering Materials, Volume 28, Issue 2, 21 January 2026.Twisted and coiled artificial muscles made from silver‐coated nylon fibers are investigated through experiments and analytical modeling. The actuators achieve contractions up to 19.3% and specific work of 8 kJ kg−1, though efficiency remains limited (≈0.15%) by thermal losses.
Salvatore Garofalo +3 more
wiley +1 more source
Non-Coaxial 24-Speed Shaft-Planetary Gearbox
International Journal of Innovative Technology and Exploring Engineering, 2019 The article presents the results of the analysis of existing designs of non-coaxial planetary gearboxes, their advantages and disadvantages. The invention is related to transport machinery area, transmission of transport vehicles, land transport systems, including motor vehicles, tractor-trailers, construction and road machines, tractors and ground ...
Oksana Olegovna Gorshkova* +1 more
openaire +1 more source
Health Index Development for a Planetary Gearbox
Procedia Manufacturing, 2020 Abstract Planetary gearboxes are widely used in machinery such as wind turbines and helicopters. To maximize their effectiveness over their lifecycle, condition monitoring is often used, and proper health indexes can be developed utilizing condition monitoring data.
Weixuan Tang, Yuejian Chen, Ming J. Zuo
openaire +1 more source
Engineering Reports, Volume 8, Issue 1, January 2026.This research presents a novel approach to frequency control in isolated hybrid microgrids by developing an adaptive fractional‐order PI controller. The controller is optimized using the Harris Hawks Optimization algorithm, enhanced with the Balloon Effect (HHO + BE), to ensure high precision and adaptability.
Mohamed Tarek Mohamed +8 more
wiley +1 more source