Results 51 to 60 of about 1,093,651 (250)

Analysis of Frictional Effects on the Dynamic Response of Gear Systems and the Implications for Diagnostics [PDF]

, 2015
To develop accurate diagnostic techniques, this study examines gear dynamic responses based on a model including the frictional effect of tooth mesh process.
Gu, Fengshou, Brethee, Khaldoon F., Ball, Andrew, Fengshou Gu, Andrew D. Ball, Ball, Andrew D., Jingwei Gao, Gao, Jingwei, Khaldoon F. Brethee   +8 more
core   +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

Analysis on dynamic characteristics of multi-strut aircraft under main landing gear coordinated steering

Xibei Gongye Daxue Xuebao
Due to their large fuselage and complex landing gear configuration, multi-strut aircraft faces significant challenges in steering control and stability during ground maneuvers.
FENG Jun, TAO Xiaojiang, GUI Xiwen, NIE Hong, ZHANG Ming, SHI Xiazheng   +5 more
doaj   +1 more source

On the Friction and Wear Mechanisms of Electrified Steel Contacts in CO2: Unveiling the Role of Carbon‐Rich Tribofilms Under Dry Sliding Conditions

Advanced Materials Interfaces, EarlyView.
This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos, Seungjoo Lee, Cagatay Yelkarasi, Leonardo I. Farfan‐Cabrera, Ryuichi Okamoto, Hitoshi Washizu, Ali Erdemir   +6 more
wiley   +1 more source

Automated optimal design of a two-stage helical gear reducer [PDF]

, 2010
The design space of multi-stage transmissions is usually very large and heavily constrained. This places significant demands on the algorithm employed to search it, but successful optimization has the potential to yield considerably better designs than ...
Tudose, Lucian, Ştefanache, Cornel, Buiga, Ovidiu, Sóbester, András   +3 more
core   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Study on impact of test loading on sudden extension performance of dual-chamber buffers

Hangkong gongcheng jinzhan
The take-off angle of attack is increased by extending the nose landing gear suddenly at the end of the stroke during catapult take-off. The measurement of the sudden extension performance of landing gear is of great significance for the development of ...
CUI Panli, HE Erming, LU Xuefeng, YANG Zhengquan, WANG Binwen   +4 more
doaj   +1 more source

Reduction of gear pair transmission error with tooth profile modification [PDF]

, 2008
The gear noise problem that widely occurs in power transmission systems is typically characterised by one or more high amplitude acoustic signals. The noise originates from the vibration of the gear pair system caused by transmission error excitation ...
Tharmakulasingam, R, Alfano, G, Atherton, MA   +2 more
core  

Fabrication of Fibers With Complex Features Using Thermal Drawing of 3D‐Printed Preforms

Advanced Materials Technologies, EarlyView.
3D printing enables rapid fabrication of macroscale polymer preforms with complex geometries. Thermal drawing then scales these structures into long fibers while preserving micron‐scale cross‐sectional features. This workflow provides a fast, low‐cost route to functional fibers with tailored geometries and material combinations for catheter, robotic ...
Ali Anil Demircali, Jinshi Zhao, Ayhan Aktas, Mohamed E. M. K. Abdelaziz, Burak Temelkuran   +4 more
wiley   +1 more source

Analysis of main dynamic parameters of split power transmission [PDF]

Transport, 2008
The review carried out had shown one basic approach of split power transmission to the organization of drive which is applied to stepless transmissions of tractors and parallel hybrid cars.
Algirdas Janulevičius, Kazimieras Giedra   +1 more
doaj   +1 more source