Results 61 to 70 of about 38,727 (237)

High energy ballistic and fracture comparison between multilayered armor systems using non-woven curaua fabric composites and aramid laminates

Journal of Materials Research and Technology, 2017
For personal protection against high kinetic energy projectiles, multilayered armor systems (MAS) are usually the best option. They combine synergistically the properties of different materials such as ceramics, composites and metals. In the present work,
Fábio de Oliveira Braga, Lucas Tedesco Bolzan, Fernanda Santos da Luz, Pedro Henrique Lameirão Machado Lopes, Édio Pereira Lima Jr., Sergio Neves Monteiro   +5 more
doaj   +1 more source

Computational analysis of projectile impact resistance on aluminium (a356) curvilinear surface reinforced with carbon nanotubes (cnts) for applications in systems of protection [PDF]

, 2017
Computational tests for ballistic impact energy absorption were developed on A356/CNTs composite material with the goal of estimating the improvement of the material’s mechanical properties by the contribution of the CNTs [1].
Martínez Tejada, H.V., Suárez Guerrero, G., Valencia García, M. F.   +2 more
core  

Influence of projectile shape on dynamic behavior of steel sheet subjected to impact and perforation [PDF]

, 2013
Authors thank Ministry of Science and Higher Education of Poland for financial support under Grants: R00 0097 12. Authors thank also M. Tavian technician in electronics from ENIM for his contribution on the development of the residual velocity ...
JANKOWIAK, Tomasz, KPENYIGBA, K. M., PESCI, Raphaël, RUSINEK, Alexis   +3 more
core   +4 more sources

Activatable smart contrast agents for photoacoustic imaging

Smart Molecules, EarlyView.
This review highlights recent advances in smart activatable photoacoustic imaging (PAI) contrast agents, which dynamically modulate their optical properties in response to external stimuli or microenvironmental cues. It discusses their molecular design, activation mechanisms, biomedical applications, and future prospects for clinically tailored use ...
Donghyeon Oh, Jihye Lee, Suyoung Park, Juyoung Yoon, Won Jong Kim, Chulhong Kim   +5 more
wiley   +1 more source

Optimization of fibre-reinforced composites for lightweight ballistic body armour

Applications in Engineering Science
This study presents an innovative approach to optimizing fiber-reinforced composite materials for ballistic body armor, enhancing protection against 7.62 mm AK-47 rifle bullets.
Elias Wakshume, Semayat Fanta, Solomon Seid, Kumlachew Yeneneh   +3 more
doaj   +1 more source

Nanotechnology for military applications: A survey of recent research in Military technical institute [PDF]

Scientific Technical Review, 2018
Armies of powerful armed forces are already applying achievements of nanoscience and supporting researches in the field of nanotechnology. This paper surveys the recent research in the area of nanomaterials application in defence technologies, conducted ...
Simić Danica, Marjanović Milica, Vitorović-Todorović Maja, Bauk Sonja, Lazić Dragana, Samolov Aleksandra, Ristović Novica   +6 more
doaj  

Concepts for the development of light-weight composite structures for rotor burst containment [PDF]

, 1977
Published results on rotor burst containment with single materials, and on body armor using composite materials were used to establish a set of hypotheses about what variables might control the design of a weight-efficient protective device.
Holms, A. G.
core   +1 more source

Ballistic composites – protecting the protectors

Reinforced Plastics, 2017
It seems scarcely credible that thin polymer fibers, bound together in resin, can stop projectiles ranging from a hand-gun bullet to a high-power rifle round, but they can and have done so, saving many lives in the process. Composite body armor protects a wide range of civilians from security guards to police officers and from bailiffs to VIPs.
openaire   +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

A Thoracic Mechanism of Mild Traumatic Brain Injury Due to Blast Pressure Waves [PDF]

, 2008
The mechanisms by which blast pressure waves cause mild to moderate traumatic brain injury (mTBI) are an open question. Possibilities include acceleration of the head, direct passage of the blast wave via the cranium, and propagation of the blast wave to
Amy Courtney, Michael Courtney
core   +1 more source