Results 31 to 40 of about 10,573 (246)

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

Comparison of Ballistic-Coefficient-Based Estimation Algorithms for Precise Tracking of a Re-Entry Vehicle and its Impact Point Prediction [PDF]

Journal of Astronomy and Space Sciences, 2012
This paper studies the problem of tracking a re-entry vehicle (RV) in order to predict its impact point on the ground. Re-entry target dynamics combined with super-high speed has a complex non-linearity due to ballistic coefficient variations.
Kyung Rok Moon, Tae Han Kim, Taek Lyul Song   +2 more
doaj   +1 more source

Ultra‐Thin Tow‐Based Discontinuous Composites—Material Overview and Aspirations

Advanced Functional Materials, EarlyView.
Tow‐based discontinuous composites made from ultra‐thin tapes offer outstanding in‐plane mechanical properties. This material, inspired by Nacre, has high volume fraction of tapes exceeding 90 % and allows for quasi‐isotropic material plates less than 100 micrometer in thickness.
Ioannis Katsivalis, Vasiliki Safranoglou, Luis Gulfo, Michael R. Wisnom, Martin Fagerström, Malin Åkermo, Soraia Pimenta, Dan Zenkert, Leif E. Asp   +8 more
wiley   +1 more source

Isometric and Ballistic Performance in Canoeing and Weightlifting

Gazi Beden Eğitimi ve Spor Bilimleri Dergisi, 2023
Weightlifters produce strength and power in the vertical plane, while canoeists produce strength and power in the horizontal plane. The purpose of the study is to examine the difference between isometric strength and ballistic force of athletes in weightlifting and canoeing, at which strength and power production occurs in different planes. 84 athletes
Güler ATALAY, Banu KABAK, Ender KAYA, Gökhan DELİCEOĞLU   +3 more
openaire   +2 more sources

Hydrogel‐Based Method for High‐Resolution Measurements of Contact Mechanics in Rapid Biological Adhesives: A Case Study in Cuttlefish Tentacle Strikes

Advanced Functional Materials, EarlyView.
Cuttlefish and squid can catch their prey within milliseconds using specialized tentacles and suckers. The physics of how the suckers can attach so quickly has remained a mystery given the technical challenges of studying them in vivo. In this publication, we develop a hydrogel that retains imprints of the suckers in order to estimate the forces they ...
Alexander Koehnsen, Mila F Krikke, Thomas E Kodger, Florian T Muijres, Guillermo J Amador   +4 more
wiley   +1 more source

Resistance to Overdoping Allows Over 2000 S cm−1 Conductivity in P(g3BTTT) With Anion‐Exchange Doping

Advanced Materials, EarlyView.
Anion‐exchange doping of conjugated polymers is an effective way to achieve high conductivities. Here, we report over 2000 S cm−1 electrical conductivity for doped P(g3BTTT). In addition, we show that P(g3BTTT) sustains exceptionally high doping levels without any drop in the charge mobility.
Basil Hunger, Maximilian M. Horn, Eva Röck, Diego Rosas Villalva, Lize Bynens, Jochen Vanderspikken, Christina Kousseff, Silène Gobeil, Olivier Bardagot, Nesibe Akmanşen‐Kalayci, Sarah H. Tolbert, Iain McCulloch, Wouter Maes, Demetra Tsokkou, Natalie Banerji   +14 more
wiley   +1 more source

Ballistic Performance of Natural Fiber Based Soft and Hard Body Armour- A Mini Review

Frontiers in Materials, 2020
Increase in awareness towards utilization of eco-friendly materials, encouraged the researchers to find a sustainable alternative to synthetic fibers for different engineering applications.
J. Naveen, K. Jayakrishna, Mohamed Thariq Bin Hameed Sultan, Mohamed Thariq Bin Hameed Sultan, Mohamed Thariq Bin Hameed Sultan, Mohamed Thariq Bin Hameed Sultan, Siti Madiha Muhammad Amir   +6 more
doaj   +1 more source

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

Theoretical Study on Adhesives Used in Ballistic Protection Structures and Transparent Armor

Buletinul Ştiinţific al Academiei Trupelor de Uscat, 2015
This article is a brief study conducted on adhesives currently used for manufacturing performance ballistic protection structures. The study landmarks several aspects, such as: types of connections available to achieve multilayer structures based on ...
Alil Luminiţa-Cristina
doaj   +1 more source

Highly Efficient Functionalization of hBN With Lithium Oxalate: A Multifunctional Platform for Composites, Ion Transport, and Spin Labeling

Advanced Materials, EarlyView.
Mechanochemical functionalization of hexagonal boron nitride with lithium oxalate produces LBNCO (Li2(BN)6C2O4${\mathrm{Li}}_{2}{\operatorname{(}\mathrm{BN})}_{6}{\mathrm{C}}_{2}{\mathrm{O}}_{4}$), a layered, intrinsically lithiated material that combines Li+${\rm Li}^+$ transport with high thermal stability and persistent paramagnetic centers.
Bence G. Márkus, Anna Nyáry, Dávid Beke, Lili Vajtai, Sivaviswa Radhakrishnan, Vignyatha R. Tatagari, Bradlee J. McIntosh, Adil Saleem, Changlong Chen, Balázs Zsirka, Mandefro Y. Teferi, Jens Niklas, Oleg G. Poluektov, Ira D. Bloom, Fulya Dogan, Margit Kovács, Ferenc Simon, Gábor Szalontai, Leon Shaw, László Forró, Károly Németh   +20 more
wiley   +1 more source