Results 101 to 110 of about 8,392,600 (273)

Direct Measurement of Explosive Impulse From Contact to the Ultra‐Near Field

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Measurement of impulse from explosive charges in contact and ultra‐near‐field regimes remains poorly characterised due to the short duration of loading, high strain rates, and the difficulty of obtaining direct momentum‐based measurements.
R. Alford, R. Hazael, R. Critchley, L. Humphreys   +3 more
wiley   +1 more source

Natural fiber reinforced polymer composites for ballistic protection: Design, performance, and challenges

Results in Materials
The increasing demand for sustainable and lightweight materials in defense and security applications has driven the development of natural fiber-reinforced polymer composites (NFRPCs) for ballistic protection.
Md. Syduzzaman, Salman Enayet Chowdhury, Nadvi Mamun Pritha, Abir Hassan, Sajid Hossain   +4 more
doaj   +1 more source

Reassessing the terminal ballistic performance of trilobate and quadrilobate arrow points on Iron Age battlefields. [PDF]

PLoS One, 2023
Pettigrew DB, Taylor W.
europepmc   +1 more source

Strategy for One‐Step Optimization of Metal Oxide Passivating Contact Materials for Si Heterojunction Solar Cells through Growth Angle Variation

Small, EarlyView.
A one‐step oblique angle reactive sputtering approach enables simultaneous tuning of bulk and interfacial stoichiometry in a metal oxide/ silicon heterojunction. In case of vanadium oxides, growth angle variation controls the formation of stoichiometric SiO2, ternary SiOx(V) interlayer, and phase purity of vanadium oxide, considerably simplifying the ...
Aparajita Mandal, Alexis Franquet, Hans Hofsäss, Tapobrata Som   +3 more
wiley   +1 more source

Numerical Investigation on the Ballistic Performance of Semi-Cylindrical Nacre-like Composite Shells under High-Velocity Impact. [PDF]

Materials (Basel), 2023
Yang H, Gao D, Chen P, Lu G.
europepmc   +1 more source

Preventing Plasma‐Induced Resist Hardening in Molybdenum Disulfide Transistors via Sacrificial Metal Mask Lithography

Small, EarlyView.
Photoresist (PR) residue significantly degrades the electrical performance of 2D semiconductors such as MoS2. In particular, the intrinsically ultrathin nature of these materials makes them highly susceptible to damage during conventional PR cleaning procedures.
Dahyeon Kim, Yanfeng Zhao, Sungyeon Kim, Seungchan Lee, Sangmin Eom, Tae Yeon Kim, Hyun Seok Lee, Joonki Suh, Byungjo Kim, Myungsoo Kim   +9 more
wiley   +1 more source

Effects of Different Projectile Nose Shapes on the Impact Performance of the Aluminium 2024 Thin Plate

Polytechnic Journal
. In this study, the impact performance of the Al2024 thin plate target was determined through a numerical approach. Two different-nosed hard steel projectiles, including a blunt and a sphere, were used in order to obtain the ballistic impact of the ...
Dlair O. Ramadan
doaj   +1 more source

Assessment of Ballistic Performance for Transparent Material

ARO, The Scientific Journal of Koya University, 2014
A finite element method was used to investigate the ballistic behavior of Polymethylmethacrylate (PMMA) under impact loading by spherical steel projectile with different ranges of velocities. Three different target thicknesses were used in the experimental and the numerical works.
openaire   +2 more sources

Dynamic Mechanical Analysis and Ballistic Performance of Kenaf Fiber-Reinforced Epoxy Composites. [PDF]

Polymers (Basel), 2022
da Silva TT, Silveira PHPMD, Figueiredo ABDS, Monteiro SN, Ribeiro MP, Neuba LM, Simonassi NT, Garcia Filho FDC, Nascimento LFC.   +8 more
europepmc   +1 more source

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

steel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source