Results 61 to 70 of about 2,244,554 (136)

Mechanical and Ballistic Performance of Composites Containing Aramid/EVA/Graphene‐Clay Nanostructured HDPE Laminates

open access: yesPolymer Composites, EarlyView.
Ballistic tests using a novel composite configuraion. ABSTRACT Aramid fibers are extensively utilized in personal protective equipment owing to their lightweight and superior properties. This study proposes a novel composite structure comprising aramid fabric, EVA hotmelt films, and graphene‐clay nanostructured HDPE laminate, totalizing 20 repeated ...
Vagner Grison   +8 more
wiley   +1 more source

Finite Element Analysis of Composites Integral Armour [PDF]

open access: yes, 2010
PhDThis thesis is focussed on a numerical method to analyse the ballistic performance of multi-material armour system. The overall objective of this work is to develop numerical models to be used within MSC. DYTRAN capable of accurately predicting the
El-Habti, Mohamed
core   +2 more sources

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

open access: yessteel 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

VHDL-AMS implementation of a numerical ballistic CNT model for logic circuit simulation

open access: yes, 2008
This paper introduces a novel numerical carbon nanotube transistor (CNT) modelling approach which brings in a flexible and efficient cubic spline non-linear approximation of the non-equilibrium mobile charge density.
Zhou, Dafeng   +2 more
core   +2 more sources

Effect of Different Surface Treatments on Resistance to Abrasive Wear of AISI 4140 Steel

open access: yessteel research international, EarlyView.
This study investigates how different surface treatments affect resistance to abrasive wear of AISI 4140 Steel. The wear rate was significantly higher in samples subjected to conventional treatments than in samples coated using the HVOF process, demonstrating the superior efficiency of coatings applied by thermal spraying in mitigating abrasive wear ...
Everton Freitas de Oliveira   +3 more
wiley   +1 more source

Recent Advances in Oriented Hydrogels: From Fundamental Mechanisms to Future Challenges

open access: yesSusMat, EarlyView.
Traditional hydrogels suffer from weak mechanical properties and limited functionality due to their random polymer networks. This review comprehensively summarizes the reinforcement mechanisms of oriented structure for hydrogels, the design/fabrication strategies, and the latest application progress of high‐strength oriented hydrogels.
Chang Xu, Xijing Zhuang
wiley   +1 more source

Optimizing Viscoelastic Properties of Rubber Compounds for Ballistic Applications

open access: yesApplied Sciences, 2020
Using interlayers of rubber adds a positive effect to the synergy of disruptor–absorber armors. Emerging from its viscoelasticity the material is able to transform mechanical stress into heat.
Janis Karl   +4 more
doaj   +1 more source

Ballistic and physical properties of highly fractured alumina [PDF]

open access: yes, 2010
It is known that ceramic materials in armour are often shattered by a penetrating projectile and the resistance to penetration is therefore dependent upon the properties of this failed material.
Hallas, M. J.   +5 more
core   +1 more source

Preparing to Fight the ‘Wrong War’? Why the UK Defence Budget Must Focus More on ‘National Resilience’

open access: yesThe Political Quarterly, EarlyView.
Abstract This article argues that the current debate over defence spending in the United Kingdom is fundamentally flawed. Too much emphasis is being placed on preparing for a form of warfare with Russia that is unlikely to occur. As this article points out, the Russians actually want to avoid a traditional battlefield confrontation with NATO.
Rod Thornton
wiley   +1 more source

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

open access: yesFrontiers 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   +6 more
doaj   +1 more source

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