Results 71 to 80 of about 78,206 (273)

Ballistic performances of the hourglass lattice sandwich structures under high-velocity fragments

Defence Technology
In this paper, the numerical simulation method is used to study the ballistic performances of hourglass lattice sandwich structures with the same mass under the vertical incidence of fragments. Attention is paid to elucidating the influences of rod cross-
He-xiang Wu, Jia Qu, Lin-zhi Wu
doaj   +1 more source

Reconfigurable, Temperature Resilient Phase‐Change Metasurfaces Fabricated via High Throughput Nanoimprinting Lithography

Advanced Science, EarlyView.
ABSTRACT The combination of metasurfaces with chalcogenide phase‐change materials is a highly promising route toward the development of multifunctional and reconfigurable nanophotonic devices. However, their transition into real‐world devices is hindered by several technological challenges. This includes, amongst others, the lack of large area photonic
Carlota de Ruiz de Galarreta, Yinghao Zhao, Jose Mendoza‐Carreño, José M. Caicedo, José Santiso, C. David Wright, M. Isabel Alonso, Jiafang Li, Agustin Mihi   +8 more
wiley   +1 more source

A Strain-rate Dependant Micromechanical Finite Element Model for High-velocity Impacts on Laminated Composite Plates [PDF]

MATEC Web of Conferences, 2019
A novel multi-scale numerical model for the simulation of high-velocity impacts on laminated composite plates is developed, which encompasses a micromechanics module for the accurate assessment of damage initiation and growth in the individual composite ...
Siorikis Dimitris K., Nastos Christos V., Saravanos Dimitris A., Gonzalez Esteban Martino   +3 more
doaj   +1 more source

Limit theorems for L\'evy walks in $d$ dimensions: rare and bulk fluctuations

, 2017
We consider super-diffusive L\'evy walks in $d \geqslant 2$ dimensions when the duration of a single step, i.e., a ballistic motion performed by a walker, is governed by a power-law tailed distribution of infinite variance and finite mean. We demonstrate
Barkai, Eli, Denisov, Sergey, Fouxon, Itzhak, Zaburdaev, Vasily   +3 more
core   +1 more source

Inherently Disordered Auxetic Metamaterials

Advanced Science, EarlyView.
Inherently disordered auxetic metamaterials based on random chiral Delaunay triangulations are designed and investigated using numerical simulations and experimental tests. These disordered frameworks exhibit orthotropic behavior and a large negative Poisson's ratio (ca.
Matteo Montanari, Reza Moghimimonfared, Andrea Spaggiari, Luke Mizzi   +3 more
wiley   +1 more source

Achieving the ballistic-limit current in Si MOSFETs

Solid-State Electronics, 2003
Abstract The fundamental ballistic limits of on-state current in ultimately scaled Si MOSFETs are examined. Theoretical analysis of these limits, with comparisons to currents that have actually been achieved in recent CMOS technologies and that have been predicted by Monte Carlo simulations, gives insight about why the limits have not been reached ...
Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611-6130, USA ( host institution ), Kim, Keunwoo, Fossum, Jerry G.   +2 more
openaire   +2 more sources

Thermally Modulated Specular Phonon Transport in a High‐Debye‐Temperature Diamond Nanobeam

Advanced Science, EarlyView.
Thermal transport in single‐crystal diamond nanobeams is measured from 140 to 300 K using electro‐thermal micro‐suspended structures. The thermal conductivity shows an increasing deviation from Boltzmann transport predictions assuming fully diffuse boundary scattering at lower temperatures.
Seohee Jang, Seung‐Woo Jeon, Takuma Shiga, Jeeyoung Shin, Sangwook Han, Woosung Park   +5 more
wiley   +1 more source

Static and Dynamic Mechanical Properties and Ballistic Behavior of 6061 Aluminum Alloy

Gaoya wuli xuebao
Aluminum alloys are widely used in aerospace, shipbuilding and high-tech fields due to their excellent mechanical properties. However, they often suffer dynamic impact loading during service.
Zhijian FENG, Menglei HU, Xuefeng ZHANG
doaj   +1 more source

Influence of Material Properties on the Ballistic Performance of Ceramics for Personal Body Armour

Shock and Vibration, 2003
In support of improved personal armour development, depth of penetration tests have been conducted on four different ceramic materials including alumina, modified alumina, silicon carbide and boron carbide.
Christian Kaufmann, Duane Cronin, Michael Worswick, Gilles Pageau, Andre Beth   +4 more
doaj   +1 more source

Weak localization in disordered systems at the ballistic limit

, 2000
The weak localization (WL) contribution to the two-level correlation function is calculated for two-dimensional disordered conductors. Our analysis extends to the nondiffusive (ballistic) regime, where the elastic mean path is of order of the size of the
A. A. Abrikosov, A. Altland, A. Altland, A. V. Andreev, A. Yacoby, Assaf Ater, B. A. Muzykantskii, B. A. Muzykantskii, B. L. Altshuler, B. L. Altshuler, B. L. Altshuler, B. Mandelbrot, C. M. Marcus, D. C. Ralph, D. Goldhaber-Gordon, D. J. Thouless, D. L. Shepelyansky, E. Abrahams, E. J. Heller, F. Borgonovi, G. Bergmann, G. Muller, I. L. Aleiner, I. L. Aleiner, J. H. Hannay, J. T. Chalker, J. T. Chalker, J. Wilke, K. M. Frahm, K. M. Frahm, K. M. Frahm, M. C. Gutzwiller, M. L. Mehta, M. V. Berry, M. V. Berry, N. Argaman, O. Agam, O. Agam, O. Agam, O. Agam, Oded Agam, P. W. Anderson, R. A. Smith, R. S. Whitney, S. Hikami, T. M. Fromhold, U. Sivan, V. E. Kravtsov   +47 more
core   +1 more source