Results 101 to 110 of about 64,908 (298)

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Wavelet coefficient characteristics during rotor/auxiliary bearing contact in active magnetic bearing systems

, 2007
Auxiliary bearings are present in active magnetic bearing systems to prevent rotor/stator contact. If rotor/bearing contact occurs, significant impact forces may arise.
Sahinkaya, M. Necip, Patrick S Keogh, Cade, Iain S., Iain S Cade, M Necip Sahinkaya, Keogh, Patrick S., Burrows, Clifford R., Clifford R Burrows   +7 more
core   +1 more source

A fractional order PID control strategy in active magnetic bearing systems

Alexandria Engineering Journal, 2018
Active Magnetic Bearings (AMBs) are broadly utilized for high angular speed machines such as turbo-machinery, compressors and high speed motors. In AMBs, the rotating parts run without physical contacts with the moving parts.
Ahmed Mohamed Abdel-Hafez Shata, Ragi A. Hamdy, Ayman Samy Abdelkhalik, Ibrahim El-Arabawy   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Active Disturbance Rejection Control Based on Modified Particle Swarm Optimization of Six-Pole Hybrid Magnetic Bearing

Machines
In order to solve the coupling problem of the six-pole hybrid magnetic bearing (SHMB), an active disturbance rejection control based on modified particle swarm optimization is proposed. Firstly, the active disturbance rejection control (ADRC) for the six-
Gai Liu, Zihao Tang, Yi Wang, Shiyu Ruan, Jinwei Zhang, Chenyin Zhao, Yizhou Hua   +6 more
doaj   +1 more source

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

Advanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier, Moritz Blum, Luana Caron, Alisa Chirkova, Philipp Cimiano, Basil Ell, Inga Ennen, Michael Feige, Maik Gaerner, Thomas Hilbig, Andreas Hütten, Günter Reiss, Tapas Samanta, Sonja Schöning, Christian Schröder, Lennart Schwan, Chris Taake, Martin Wortmann   +17 more
wiley   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

Advanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian, Anh Thi Le, Anh Thi Van Le, Dung My Thi Dang, Tin Chanh Duc Doan, Chien Mau Dang, Martin Bolduc   +6 more
wiley   +1 more source

Commissioning of a Modular Active-Magnetic-Bearing-Suspended Rotor System

IEEE Open Journal of Industry Applications
Traditional high-speed rotor configurations employing magnetic bearing technology, which typically integrates two radial bearings and one axial bearing to suspend the rotor, are sensitive to changes in impeller mass properties.
Atte Putkonen, Juuso Narsakka, Gyan Ranjan, Tuomo Lindh, Jussi Sopanen, Niko Nevaranta   +5 more
doaj   +1 more source

Active Magnetic Bearing Rotor Model Updating Using Resonance and MAC Error

Shock and Vibration, 2015
Modern control techniques can improve the performance and robustness of a rotor active magnetic bearing (AMB) system. Since those control methods usually rely on system models, it is important to obtain a precise rotor AMB analytical model.
Yuanping Xu, Jin Zhou, Long Di, Chen Zhao, Qintao Guo   +4 more
doaj   +1 more source

Active magnetic bearings

, 2013
Magnetism is a class of physical phenomena that includes forces exerted by magnets on other magnets. It has its origin in electric currents and the fundamental magnetic moments of elementary particles. A bearing is a machine element that constrains relative motion between moving parts to only the desired motion.
openaire   +1 more source