Results 11 to 20 of about 17,291 (260)

Human Factors Assessment of a Novel Pediatric Lower-Limb Exoskeleton

Robotics, 2023
While several lower-limb exoskeletons have been designed for adult patients, there remains a lack of pediatric-oriented devices. This paper presented a human factor assessment of an adjustable pediatric lower-limb exoskeleton for childhood gait ...
Anthony C. Goo, Jason J. Wiebrecht, Douglas A. Wajda, Jerzy T. Sawicki   +3 more
doaj   +1 more source

Design and Evaluation of a Pediatric Lower-Limb Exoskeleton Joint Actuator

Actuators, 2020
Lower-limb exoskeletons have undergone significant developments for aiding in the ambulation of adults with gait impairment. However, advancements in exoskeletons for the pediatric population have comparatively been lacking.
Anthony Goo, Curt A. Laubscher, Ryan J. Farris, Jerzy T. Sawicki   +3 more
doaj   +1 more source

Deposits on Bearing Pad Caused by Particulate Contamination in Turbine Oil

Tribology Online, 2015
Under severe bearing conditions, deposits form on the loaded part of bearing pads and if this happens excessively, it could lead to unacceptable rises in temperature and vibration.
Fumihiko Yokoyama, Yuka Iwama, Masahiro Maruyama, Mitsuo Sano   +3 more
doaj   +1 more source

Mathematical models of squeeze film dampers in rotor dynamics of gas turbine engines

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
The paper focuses on the choice of mathematical models of squeeze film dampers and methods of their numerical implementations for gas turbine engine rotor dynamics problems.
M. N. Kutakov, S. A. Degtiarev, M. K. Leontiev   +2 more
doaj   +1 more source

Identification Methods and Test Results for Tilting Pad and Fixed Geometry Journal Bearing Dynamic Coefficients – A Review

Shock and Vibration, 2009
Fluid film journal bearings (FFBs) are used to support high-speed rotors in turbomachinery which often operate above the rotor first bending critical speed.
T.W. Dimond, P.N. Sheth, P.E. Allaire, M. He   +3 more
doaj   +1 more source

Extracting Feature Information and its Visualization Based on the Characteristic Defect Octave Frequencies in a Rolling Element Bearing

Data Science Journal, 2007
Monitoring the condition of rolling element bearings and defect diagnosis has received considerable attention for many years because the majority of problems in rotating machines are caused by defective bearings.
Jianyu Lei, Mingfu Liao
doaj   +1 more source

Hard Solid Deposit Formation on Turbine Housing, Nozzle and Blades in Marine Use Turbocharger at the Elevated Temperature

Tribology Online, 2014
Hard solid deposit formation has been inevitable problem in marine use turbocharger, and many engineers have struggled with it for years. It is due to low quality fuel, and the deposit results in the deterioration of the performance.
Fumihiko Yokoyama, Yuka Iwama, Ken Nakano, Yutaka Hirata   +3 more
doaj   +1 more source

Rotating machinery anomaly detection using data reconstruction generative adversarial networks with vibration energy analysis

AIP Advances, 2022
Rotating machines, such as engines, turbines, or gearboxes, are widely used in modern society. Their mechanical components, such as rotors, bearings, or gears, are the main parts, and any failure in them can lead to a complete shutdown of the rotating ...
Jun Li, Yongbao Liu, Qiang Wang, Zhikai Xing, Fan Zeng   +4 more
doaj   +1 more source

A Review of Tilting Pad Bearing Theory

International Journal of Rotating Machinery, 2011
A theoretical basis for static and dynamic operation of tilting pad journal bearings (TPJBs) has evolved over the last 50 years. Originally demonstrated by Lund using the pad assembly method and a classic Reynolds equation solution, the current state of ...
Timothy Dimond, Amir Younan, Paul Allaire   +2 more
doaj   +1 more source

Application of Rotating Machinery Fault Diagnosis Based on Deep Learning

Shock and Vibration, 2021
With the continuous progress of modern industry, rotating machinery is gradually developing toward complexity and intelligence. The fault diagnosis technology of rotating machinery is one of the key means to ensure the normal operation of equipment and ...
Wei Cui, Guoying Meng, Aiming Wang, Xinge Zhang, Jun Ding   +4 more
doaj   +1 more source