Results 41 to 50 of about 404,127 (255)

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

Advanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Analysis of Selected Properties 100CrMnSi6-4 Surface Layer after Laser Micro-Smelting

Archives of Metallurgy and Materials, 2017
The use of laser ablation phenomenon with the “thermal effect” to produce surface textures, mainly lubricant micro-containers in the form of spherical micro-bowls in the surface layer of 100CrMnSi6-4 alloy of bearing steel.
Napadłek W.
doaj   +1 more source

New Curve Fitting Based Roller Modification Method for Spherical Roller Bearing

Journal of Physics: Conference Series, 2020
AbstractIn the field of roller modification affecting the service life of rolling bearings, Different from point contact of ball bearing and line contact of cylindrical or tapered roller bearing, Spherical roller bearing is very special because it has the characteristics of point contact and line contact at the same time.
openaire   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

Advanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

Sacrificial‐Layer‐Assisted Heat‐Affected‐Zone Suppression in Laser Patterning of PET for High‐Performance Flexible Devices

Advanced Functional Materials, EarlyView.
A removable sacrificial polymer layer engineers the thermal boundary condition during nanosecond laser ablation of PET, suppressing heat‐affected‐zone formation without relying on costly ultrafast lasers. This strategy enables deep, high‐aspect‐ratio trenches with no detectable heat‐affected zone, templating silver‐filled mesh electrodes with record ...
Mehdi Zarei, Mirza Sahaluddin, Mostafa Bedewy, Paul W. Leu   +3 more
wiley   +1 more source

DETERMINATION OF RATIONAL REGIMES FOR GRINDING BARREL-SHAPED SURFACES OF ROLLERS ENSURING THEIR ROUGHNESS ON RA PARAMETER WITHIN LIMITS OF 0,16–0,32 MICROMETERS

Наука и техника, 2008
The paper considers peculiarities that ensure minimum forming surface roughness (Ra = 0,2) of barrel-type rollers in the roller radial spherical bearings under conditions of an actual production process.
G. P. Krivko, D. A. Cherey
doaj  

Non-dimensional design approach for electrodynamic bearings [PDF]

, 2012
Electrodynamic bearings (EDBs) are passive magnetic bearings that exploit the interaction between eddy currents developed in a rotating conductor and a static magnetic field to generate forces. Similar to other types of magnetic suspensions, EDBs provide
Impinna, Fabrizio, Detoni, J.G., Tonoli, Andrea, GIRARDELLO DETONI, JOAQUIM, Amati, Nicola   +4 more
core  

Mechanics of Telson Ridges in Mantis Shrimp for Impact Analysis and Implications for Bioinspired Elastic Shell Designs

Advanced Functional Materials, EarlyView.
The mantis shrimp telson reveals how ridged biological shields control deformation under impact. Inspired by this architecture, telson‐inspired ridged curved shells transform ridge geometry and macroscopic curvature into bidirectional snap‐through, tunable stiffness, and enhanced hysteretic energy dissipation for multifunctional architected materials ...
Phani Saketh Dasika, Adwait Trikanad, Wei Huang, Taige Hao, David Kisailus, Pablo D. Zavattieri   +5 more
wiley   +1 more source

Analysis of Temperature Characteristics of Double-Row Spherical Roller Bearings Based on CFD

Lubricants
Double-row spherical roller bearings are frequently employed as supporting components in mining machinery. In practice, these bearings are lubricated manually, and the bearing chamber is filled with grease, which can lead to issues such as grease wastage
Chengguo Fu, Ting Chen, Hui Yang, Haibo Li, Yuhao Li, Yaqi Zhang, Weiwei He, Hongbin Cong   +7 more
doaj   +1 more source

Analysis of Failure Effect of Cage Thickness on Spherical Roller Bearings

IOP Conference Series: Materials Science and Engineering, 2020
Abstract Spherical roller bearings are important parts of high-frequency crushers. Using the finite element analysis software to carry on the transient dynamics analysis to the bearing obtains the bearing deformation, the pressure and so on characteristis.
Fang Li, Wang Biao Qiu, Jia Bin Cai, Kai Wang, Zheng Pan   +4 more
openaire   +1 more source