Results 81 to 90 of about 1,159,056 (280)

Limiting stable currents in bounded electron and ion streams [PDF]

, 1965
The classical static analysis of the infinite planar diode has been extended to include the effects of finite transverse beam size. Simple expressions have been found for the increase in maximum stable current density over that of an infinite stream for ...
Birdsall, C. K., Bridges, W. B., Frey, J. I.   +2 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Magnetic antenna using metallic glass [PDF]

, 1996
A lightweight search-coil antenna or sensor assembly for detecting magnetic fields and including a multi-turn electromagnetic induction coil wound on a spool type coil form through which is inserted an elongated coil loading member comprised of metallic ...
Desch, Michael D., Farrell, William M., Houser, Jeffrey G.   +2 more
core   +1 more source

Experimental and simulation study of 1D silicon nanowire transistors using heavily doped channels [PDF]

, 2017
The experimental results from 8 nm diameter silicon nanowire junctionless field effect transistors with gate lengths of 150 nm are presented that demonstrate on-currents up to 1.15 mA/m for 1.0 V and 2.52 mA/m for 1.8 V gate overdrive with an off-current
Amoroso, Salvatore M., Asenov, Asen, Dochioiu, Alexandru-Iustin, Georgiev, Vihar P., Lema, Fikru-Adamu, MacLaren, Donald A., Mirza, Muhammad M., Paul, Douglas J., Riddet, Craig, Towie, Ewan   +9 more
core   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Pentamodes: Effect of unit cell topology on mechanical properties

Results in Engineering
Pentamodes (first conceived theoretically by Milton and Cherkaev) are a very interesting class of mechanical metamaterials that can be used as building blocks of structures withdecoupled bulk and shear moduli.
Kaivan Mohammadi, Moein Shafia, Javad Akbari, Reza Hedayati   +3 more
doaj   +1 more source

Fabrication of a Large-aspect-ratio Single-thread Helical Electrode using Multiple Wire Electrochemical Micromachining

International Journal of Electrochemical Science, 2020
Helical electrode is known to be effective in accelerating the renewal of fresh electrolyte and the removal of electrolysis products in wire electrochemical machining.
Xiaolong Fang, Tao Yang, Mi Chen, Di Zhu
doaj   +1 more source

The drag coefficient of cylindrical spacecraft in orbit at altitudes greater than 150 km [PDF]

The spacecraft of the Geopotential Research Mission (GRM) are cylindrical in form and designed to fly with their longitudinal axes parallel to their direction of flight. The ratio of length to diameter of these spacecraft is roughly equal to 5.0.
Herrero, F. A.
core   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Deformation simulation analysis and validation for large long-length-to-diameter ratio thin-walled cylindrical parts heat treatment

Journal of Intelligent Manufacturing and Special Equipment
Purpose Thin-walled cylindrical structures with large length-to-diameter ratios in the aerospace industry are vulnerable to deformation during manufacturing and heat treatment, which may cause product failure and affect equipment service life.
Xiaojuan Zhang, Lu Bai, Lijun Xu, Jingtao Liu, Zhongping Zhou, Rui Li, Lijian Zhu, Junxi Wang, Ziyi Song, Chongjun Wu   +9 more
openaire   +1 more source