Results 21 to 30 of about 3,237,410 (336)

Comparison-embedded evidence-CNN model for fuzzy assessment of wear severity using multi-dimensional surface images

Friction, 2023
Wear topography is a significant indicator of tribological behavior for the inspection of machine health conditions. An intelligent in-suit wear assessment method for random topography is here proposed.
Tao Shao, Shuo Wang, Qinghua Wang, Tonghai Wu, Zhifu Huang   +4 more
doaj   +1 more source

Running performance of an aerodynamic journal bearing with squeeze film effect [PDF]

, 2013
Results of theoretical and experimental studies concerning the performance of an aerodynamic journal bearing which running is assisted by squeeze film ultrasonic levitation (SFUL) are presented in this paper.
Ha, Ono, Salbu, Shigeka Yoshimoto, Stolarski, Stolarski, Stolarski, Stolarski, Tadeusz Stolarski, Tomohiro Shou, Vandaele, Wiesendanger, Xue, Yoshimoto   +13 more
core   +1 more source

Research on the Lubrication State of the Contact Interface Under the Tilt and Skew State of the Roller of the Aviation Bearing

Lubricants
The lubrication behavior and mechanical characteristics of the main bearing area of an aero-engine main shaft bearing determine the reliability and life of the main shaft bearing.
Lina Zhou, Xiaofeng Yang, Zhigang Luo, Jingjing Zhang, Zhen Li, Xiaodong Wang   +5 more
doaj   +1 more source

Tilting-Pad Journal Bearings—Frequency-Dependent Dynamic Coefficients and Pivot Flexibility Effects

Lubricants, 2022
Tribologists have generally accepted that the dynamic modeling of tilting-pad journal bearings (TPJB) must consider the frequency dependency of the dynamic properties.
Laurence F. Wagner, Paul E. Allaire
doaj   +1 more source

Material removal mechanism of copper chemical mechanical polishing with different particle sizes based on quasi-continuum method

Friction, 2017
In this paper, the material removal mechanism of copper chemical mechanical polishing was studied by the quasicontinuum method that integrated molecular dynamics and the finite element method. By analyzing the abrasive process of different particle sizes
Aibin Zhu, Dayong He, Shengli He, Wencheng Luo   +3 more
doaj   +1 more source

Study of the Micropore Structure and Tribological Properties of PTFE-Modified Porous Polyimide

Lubricants
To address the challenges of regulating micropore properties and improving the tribological performance of porous polyimide (PPI), PPI/PTFE composites were fabricated via cold pressing–sintering.
Xiaobo Sun, Xiaohui Shang, Yuanyuan Li, Xiaoya Zhang, Fei Chen, Keying Li, Ke Yan   +6 more
doaj   +1 more source

Cage stability of ball bearings under variable working conditions

工程科学学报, 2019
The momentum wheel is a key device used for orbiting satellite attitude control. Its controlling accuracy is strongly influenced by the cage stability of the ball bearings in momentum wheels.
Zhi-qiang ZHANG, Li-qin WANG, Chuan-wei ZHANG, Yu-meng ZHANG, Le GU   +4 more
doaj   +1 more source

Thrust bearing [PDF]

, 1976
A gas lubricated thrust bearing is described which employs relatively rigid inwardly cantilevered spokes carrying a relatively resilient annular member or annulus. This annulus acts as a beam on which are mounted bearing pads.
Anderson, W. J.
core   +1 more source

Psychosocial Outcomes in Patients With Endocrine Tumor Syndromes: A Systematic Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction The combination of disease manifestations, the familial burden, and varying penetrance of endocrine tumor syndromes (ETSs) is unique. This review aimed to portray and summarize available data on psychosocial outcomes in patients with ETSs and explore gaps and opportunities for future research and care.
Daniël Zwerus, Floortje Strobbe, Annemarie A. Verrijn Stuart, Hanneke M. van Santen, Gerlof D. Valk, Sasja A. Schepers, Rachel S. van Leeuwaarde   +6 more
wiley   +1 more source

Analysis on the Dynamic Behavior of Space Shafting under Combined Load

Shock and Vibration
The space shafting is the core component of the momentum exchange attitude control actuator for spacecraft.The dynamic behavior of space shafting has an important impact on the performance of the actuators. Based on the dynamic theory of rolling bearing,
Yan Zhao, Fei Gao, Yulei Xia, Jinfang Gu, Yameng Wang, Sen Zhao   +5 more
doaj   +1 more source