Results 61 to 70 of about 3,587,319 (350)

Ionosphere disturbance during cosmodrome “Vostochniy” launches

E3S Web of Conferences, 2018
It is known that during spacecraft launches ionospheric plasma properties are modified in the result of impact of shock-acoustic waves generated during carrier rocket supersonic motion. As a rule, investigation of ionospheric plasma variations is carried
Dumbrava Zinaida F., Sivokon Vladimir P., Teslyuk Yuriy A., Khomutov Sergey Y.   +3 more
doaj   +1 more source

Design of high roll‐off frequency selective surface based on single‐layer SIW cavity with fully canonical filtering responses

Electronics Letters, 2022
In this paper, a novel design of high roll‐off frequency selective surface (FSS) is proposed based on a single‐layer substrate integrated waveguide (SIW) cavity.
Xian Wang, Dongfang Zhou, Yue Wang, Qikun Liu, Na An   +4 more
doaj   +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

Deformation-Electromagnetic Relations in Lithospheric Activity Manifestations

E3S Web of Conferences, 2018
It has been shown that dipole radiation of accelerated charges, described by Larmor relation, is the basis of the known mechanic-electromagnetic processes of rock deformation.
Larionov Igor, Malkin Evgeny, Uvarov Vladimir   +2 more
doaj   +1 more source

Overview on a selection of recent works in asymptotic analysis for wave propagation problems [PDF]

, 2010
We give a brief survey of some recent advances of asymptotic analysis methods applied to wave propagation ...
Claeys, Xavier
core  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Optically Transparent Single-Layer Dual-Frequency Dual-Polarization Metasurface Applied in Close Proximity to Smartphone Millimeter-Wave Phased Array Antenna Systems

IEEE Open Journal of Antennas and Propagation
An optically transparent single-layer dual-frequency dual-polarization metasurface operating at 28 GHz and 38 GHz is proposed to enhance millimeter-wave transmission through glass.
Wen Fu, Igor Syrytsin, Rocio Rodriguez Cano, Peiye Liu, Andrey Kobyakov, Gert Fround Pedersen, Shuai Zhang   +6 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

User Impact on Phased and Switch Diversity Arrays in 5G Mobile Terminals

IEEE Access, 2018
In this paper, a mobile terminal phased array at 28 GHz with different scan angles is compared with a switch diversity antenna array at 28 GHz in the case of antenna beams pointing at the user's body.
Igor Syrytsin, Shuai Zhang, Gert Frolund Pedersen   +2 more
doaj   +1 more source