Results 71 to 80 of about 133,134 (279)

On the stiffness of linear roller bearings: On the stiffness of linear roller bearings

, 2021
This thesis creates and validate a model for predicting the static stiffness of a linear crossed roller bearing as a function of its key design variables within a range of 20%.
Wijnberg, Onno (author)
core  

The Recovery of Weak Impulsive Signals Based on Stochastic Resonance and Moving Least Squares Fitting [PDF]

, 2014
In this paper a stochastic resonance (SR)-based method for recovering weak impulsive signals is developed for quantitative diagnosis of faults in rotating machinery.
Gu, Fengshou, Guanghua Xu, Fengshou Gu, Jiang, Kuosheng, Kuosheng Jiang, Lin Liang, Tao, Tangfei, Xu, Guanghua, Liang, Lin, Tangfei Tao   +9 more
core   +1 more source

Fault Classification of Axial and Radial Roller Bearings Using Transfer Learning through a Pretrained Convolutional Neural Network

Designs, 2018
Detecting bearing faults is very important in preventing non-scheduled shutdowns, catastrophic failures, and production losses. Localized faults on bearings are normally detected based on characteristic frequencies associated with faults in time and ...
Martin Hemmer, Huynh Van Khang, Kjell G. Robbersmyr, Tor I. Waag, Thomas J. J. Meyer   +4 more
doaj   +1 more source

Modeling of Roller Bearings [PDF]

Linköping Electronic Conference Proceedings, 2017
Tobias Weiser, Burkhard Corves
openaire   +2 more sources

3D‐Printed Gradient Shape‐Memory Strain Sensors With Rewritable Gauge Factors

Advanced Functional Materials, EarlyView.
A 3D‐printed shape‐memory strain sensor combines thermomechanical programming with gradient architectural design. Preset strain rewrites the gauge factor (GF), while the gradient geometry amplifies the response through strain redistribution. Reprogrammable sensitivity enables the same sensor to detect weak pulse signals and monitor large‐amplitude ...
Xuan Zhang, Wenjie Qiao, Kaixin Jiang, Sherry Chen, Hanyu Cui, Kirsten Dyer, Xuefeng Zhu, Ting Wang, Xuehua Zhang, Ben Bin Xu, Jie Kong   +10 more
wiley   +1 more source

Experimental and numerical studies on the roller–cage collision mechanism in a cylindrical roller bearing

Friction
In rolling bearings, roller–cage collisions are one of the primary causes of cage damage. However, the underlying mechanisms remain unclear, particularly under high radial loads.
Di Yang, Xi Wang, Yu Hou
doaj   +1 more source

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

Advanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa, Frank Kaulfuß, Stefan Makowski, Volker Weihnacht   +3 more
wiley   +1 more source

Influence of Sulfur-Phosphorus Additive Interaction Effects on the Performance of Roller Bearing Greases

Lubricants
Friction wear is inevitable in roller bearings at high speeds, under heavy loads and vibration, and in other operating conditions. The use of grease can significantly reduce frictional wear. Sulfur–phosphorus additives have excellent anti-wear properties,
Han Peng, Yike Chen, Linjian Shangguan, Yanchi Li, Qi Wang   +4 more
doaj   +1 more source

Dynamic Loading Regulates Meniscus‐Like Matrix Production in Human Mesenchymal Stromal Cell‐Seeded PET Scaffolds

Advanced Healthcare Materials, EarlyView.
Dynamic compression enhances mesenchymal stromal cell proliferation in nonwoven PET scaffolds under chondrogenic differentiation conditions and triggers mechanosensitive transcriptional programs associated with extracellular matrix remodeling. These findings highlight the potential of mechanically stimulated PET scaffolds as a promising platform for ...
Graciosa Quelhas Teixeira, Luisa de Roy, Anna‐Lotta Feldmeier, Mubashir Ahmad, Sofia Pilão, Maria Ahrens, Anita Ignatius, Carsten Linti, Andreas Martin Seitz   +8 more
wiley   +1 more source

Experiment and Numerical Study of Wear in Cross Roller Thrust Bearings

Lubricants, 2015
Bearings are essential parts used in machine tools where high precision is required. It is important to understand bearing failure in order to replace a bearing before it affects the quality of precision.
So Young Hwang, Na Ra Lee, Naksoo Kim
doaj   +1 more source