Results 1 to 10 of about 38,151 (212)

Finite Element Analysis of the Ballistic Impact on Auxetic Sandwich Composite Human Body Armor

open access: yesMaterials, 2022
In this study, the ballistic impact behavior of auxetic sandwich composite human body armor was analyzed using finite element analysis. The auxetic core of the armor was composed of discrete re-entrant unit cells.
Rafiullah Khan   +2 more
exaly   +2 more sources

Composites with Natural Fibers and Conventional Materials Applied in a Hard Armor: A Comparison

open access: yesPolymers, 2020
Natural-fiber-reinforced polymer composites have recently drawn attention as new materials for ballistic armor due to sustainability benefits and lower cost as compared to conventional synthetic fibers, such as aramid and ultra-high-molecular-weight ...
Fernanda Santos Da Luz   +2 more
exaly   +2 more sources

Biomimetic design and impact simulation of Al2O3/Al composite armor based on armadillo shell

open access: yesScientific Reports
The advancement of lightweight protective armors holds critical importance for enhancing the maneuverability and combat capabilities of helicopters. Leveraging insights from bionics, it provides a new idea for high-performance armor design. In this study,
Fulong Zhang   +5 more
doaj   +2 more sources

An analysis of bi-layer ceramic armor and optimization of protection efficiency

open access: yesMaterials & Design, 2021
The bi-layer composite ceramic armors are widely used in the protection field, and its design method is keep changing since the Florence model has been found.
Bowen Zhang   +5 more
doaj   +2 more sources

Bioinspired design of flexible armor based on chiton scales

open access: yesNature Communications, 2019
Biology has often served as the inspiration for the design of body armor; one common limitation is the flexibility of the resultant armor. Here, the authors examine the armour of chiton and use the observed design principles to 3D print flexible armor.
Matthew Connors   +11 more
doaj   +2 more sources

Evaluation of Agility of Armored Independent Brigades of the Ground Forces of the Islamic Republic of Iran [PDF]

open access: yesعلوم و فنون نظامی, 2021
The aim of this study was to evaluate the agility of independent armored brigades of the Army of the Islamic Republic of Iran after the implementation of the Samen project.
Ali Rafeie   +2 more
doaj   +1 more source

Can a Suit of Armor Conduct Electricity? A New Dataset for Open Book Question Answering [PDF]

open access: yesConference on Empirical Methods in Natural Language Processing, 2018
We present a new kind of question answering dataset, OpenBookQA, modeled after open book exams for assessing human understanding of a subject. The open book that comes with our questions is a set of 1326 elementary level science facts.
Todor Mihaylov   +3 more
semanticscholar   +1 more source

One‐Step Soaking Strategy toward Anti‐Swelling Hydrogels with a Stiff “Armor”

open access: yesAdvancement of science, 2023
Double‐network (DN) hydrogels consisting of noncovalent interacting networks are highly desired due to their well‐controlled compositions and environmental friendliness, but the low water resistance always impairs their mechanical strength. Here, an anti‐
Xueyu Dou   +5 more
semanticscholar   +1 more source

Coastal landforms and fetch influence shoreline restoration effectiveness

open access: yesFrontiers in Marine Science, 2023
Coastal shorelines are a key interface between terrestrial and aquatic ecosystems and are vital for human livelihood. As a result, shorelines have experienced substantial human modifications worldwide.
Jason D. Toft   +9 more
doaj   +1 more source

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