Results 31 to 40 of about 119,769 (367)

Enhancing Bubble Removal in Geometry‐Optimized Electrodes

Advanced Engineering Materials, EarlyView.
3D‐printed lattice electrodes outperform stochastic foams in alkaline water electrolysis despite 20%–25% lower surface area. Straight flow channels generate Venturi‐like bubble entrainment, suppressing gas accumulation that renders foam interiors electrochemically inactive.
Florian Wiesner, Peter Förster, Alexander Limper, Anselm Brodersen, Matthias Wessling, John Linkhorst   +5 more
wiley   +1 more source

Material Utilization in Additively Manufactured Layered Systems with a Porous Substrate: A Numerical Case Study of a Thrust Ball Bearing

Metals
In layered systems with porous substrates and a dense solid surface, stiffness and strength are inherently coupled through porosity-dependent relations, influencing their load-bearing behaviour.
Olaf Grutza, Simon Graf, Stefan Paulus, Stefan Thielen, Oliver Koch   +4 more
doaj   +1 more source

The Effects of Blank Geometry on Gear Rolling for Large Gear Modules: Experiments and Finite Element Simulations

IEEE Access, 2018
Gear rolling is a forming process to produce gear wheels by plastic deformation. The advantage of the process is to eliminate the chip formation during production and also to improve the product properties since the non-metallic inclusions will be ...
Alireza Khodaee, Arne Melander, Sven Haglund   +2 more
doaj   +1 more source

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

Advanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari, Supharoek Sornsomrit, Muhammad Ayaz Akbar, Stephan Rudykh   +3 more
wiley   +1 more source

Changes in Surface Topography and Light Load Hardness in Thrust Bearings as a Reason of Tribo-Electric Loads

Lubricants
The article focuses on the findings of endurance tests on thrust bearings. In addition to the mechanical load (axial load: 10 ≤ C0/P ≤ 19, lubrication gap: 0.33 µm ≤ h0 ≤ 1.23 µm), these bearings are also exposed to electrical loads (voltage: 20 Vpp ≤ U0
Simon Graf, Oliver Koch
doaj   +1 more source

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

Influences of the metastability of austenitic stainless steels on the wear behavior in a radial shaft seal system

Journal of Materials Research and Technology
Wear tests were conducted on shafts manufactured from three commercial austenitic stainless steels – AISI 303, 347, 904L – within the context of a sealing contact of radial shaft seal system, where wear resistance is critical to preventing leakage ...
Tong Zhu, Marek Smaga, Tim Schollmayer, Christoph Burkhart, Oliver Koch, Stefan Thielen, Tilmann Beck   +6 more
doaj   +1 more source

Leakage fault diagnosis method of aircraft landing gear hydraulic cylinder based on wavelet packet

The Journal of Engineering, 2018
The main executive element of the retractable landing gear is the hydraulic cylinder, and its common fault is caused by the leakage of the hydraulic cylinder.
Jie Tang, Qiang Liu, Jianwei Hu, Jinjian Huo, Liwen Wang   +4 more
doaj   +1 more source

Calculation model of the stressed state of the tooth contact zone of surface-hardened gears

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022
Stress state of the surface layer in the contact zone of mating teeth of cylindrical gears has been studied. It is established that stressed state of contact surfaces in the meshing pole of mating teeth is characterized not only by surface contact ...
S. P. Rudenko, S. G. Sandomirski
doaj   +1 more source

An experimental method to measure gear tooth stiffness throughout and beyond the path of contact

, 2001
A method is presented that allows the accurate measurement of the tooth pair stiffness of a pair of spur gears. The method reveals the stiffness behaviour throughout the full length of the normal path of contact and also into the extended contact region ...
Munro, R. G., Palmer, Derrol, Morrish, L.   +2 more
core   +1 more source