Results 111 to 120 of about 5,196 (283)

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

Slot Wedges with Integrated Grounded Electrodes for Suppression of Inverter-Induced Bearing Currents

Reliable operation of electric motors is vital for industrial applications. Yet bearing currents pose significant threats to their efficiency and longevity.
Vostrov, Konstantin, Pyrhõnen, Juha
core   +1 more source

Radio Frequency Measurement Method for Detecting Bearing Currents in Induction Motors [PDF]

, 2009
Induction motors are widely used in industry, and they are generally considered very reliable. They often have a critical role in industrial processes, and their failure can lead to significant losses as a result of shutdown times.
Särkimäki, Ville
core  

In Situ Crystalline‐Amorphous Composite Oxide Structure Suppressing Thermal Wear Instability for Refractory Multi‐Principal Element Alloy

Advanced Functional Materials, EarlyView.
An effective strategy is developed to overcome the medium temperatures wear resistance degradation in refractory multi‐principal element alloys. By utilizing chemical short‐range ordering to trigger oxygen‐induced amorphization, a composite oxide structure is formed, which combines high hardness with robust stiffness.
Xuhui Pei, Jianbao Zhang, Hanming Wang, Yin Du, Tao Yang, Ji‐Jung Kai, Benyebka Bou‐Saïd, Haifeng Wang   +7 more
wiley   +1 more source

Evaluating the effectiveness and longevity of grounding bearings in mitigating EDM bearing currents in electric machines and drive systems

e+i Elektrotechnik und Informationstechnik
Abstract In order to mitigate the occurrence of EDM bearing currents in electric drive systems, a variety of shaft-grounding systems can be employed. However, their effectiveness and longevity are not guaranteed, as they are significantly influenced by operating conditions and environmental factors.
Maximilian Bleicher, Benjamin Knebusch, Niklas Joel Janosch, Bernd Ponick   +3 more
openaire   +1 more source

Spectroscopic Investigation of Polysulfide Redox Evolution in Catholyte Solutions for Potassium–Sulfur Batteries

Advanced Functional Materials, EarlyView.
Potassium–sulfur batteries are investigated using UV–vis spectroscopy to track the evolution of potassium polysulfide species at elevated temperature. The study reveals sulfur radical anions as key intermediates and shows how solvent composition and cell design influence polysulfide stability, redox behavior, and cycling performance, providing insights
Chiara Morini, Dawid Kasprzak, Lincoln Crowe, Cecilia Spedalieri, Johannes Baller, Naiyu Qi, Fariza Kalyk, Gustav Graeber   +7 more
wiley   +1 more source

Investigations of bearing failures due to electric current passage

, 2005
Bearing damages due to electric current passage, such as circulating currents and electrostatic discharges, through rolling bearings in induction motors and driven machines are known for a long time.
Jagenbrein, A.
core  

Simulation Analysis and Experimental Research on Electric Thermal Coupling of Current Bearing

Lubricants
With the advancement of industries such as high-speed railways, new energy vehicles, and wind power, bearings are frequently exposed to various electric field environments, leading to the need for lubricating oil films of bearings to withstand voltage.
Zhiwei Wang, Shuanglong Mao, Heng Tian, Bing Su, Yongcun Cui   +4 more
openaire   +2 more sources

Engineering Pendant Group Chemistry to Control Hydrophilicity and Oxidative Degradation of Thioketal‐Based Biomaterials

Advanced Functional Materials, EarlyView.
Thioketal (TK) polymers are promising biomaterials due to their selective biodegradation by reactive oxygen species (ROS), but they respond slowly to physiologic doses of ROS. Here, the TK bond's pendant groups are modified to enhance the degradation of TK‐based implants both in vitro and in vivo.
Karina A. Bruce, Dylan W. Marques, Alan J. Fullenkamp, Emma‐Louise Lowell, Rais B. Fataki, Jake D. Ryan, John R. Martin   +6 more
wiley   +1 more source

Bearing Currents and Their Relationship to PWM Drives

, 2008
- This paper examines ac motor shaft voltages and the resulting bearing currents when operated under Pulse Width Modulation (PWM) voltage source inverters.
Russel J. Kerkman, Doyle Busse, Gary Skibinski, Dave Schlegel, Jay Erdman   +4 more
core