Results 21 to 30 of about 5,272 (298)

Blast shock wave mitigation using the hydraulic energy redirection and release technology. [PDF]

open access: yesPLoS ONE, 2012
A hydraulic energy redirection and release technology has been developed for mitigating the effects of blast shock waves on protected objects. The technology employs a liquid-filled plastic tubing as a blast overpressure transformer to transfer kinetic ...
Yun Chen, Wei Huang, Shlomi Constantini
doaj   +1 more source

Saint-Just-en-Chaussée au musée d’Archéologie nationale. S’appuyer sur la recherche et prendre le temps de la réflexion

open access: yesArchéopages, 2022
The sanctuary of Saint-Just-en-Chaussée (Oise) of La Tène period is bordered by a large-scale ditch enclosing a surface of several hectares. Inside the religious compound, several enclosures were locations where different cultic performances were held ...
François Malrain, Laurent Olivier
doaj   +1 more source

Optimizing the stacking sequence in dual-purpose body armors [PDF]

open access: yes, 2013
Many police body armor systems are dual purpose, offering both ballistic and knife resistanceby combining a flexible ballistic textile pack with a stiffer knife resistant layer.The two types of protection differ in materials and mechanisms such that each
Champion, Stephen M.   +2 more
core   +1 more source

Body Armor, Performance, and Physiology During Repeated High-Intensity Work Tasks. [PDF]

open access: yes, 2012
This study examined the effect of body armor during repeated, intermittent high-intensity simulated military work. Twelve males performed 11 repetitions of a military style circuit, wearing no armor on one occasion and full armor (~17 kg) on another ...
Vincs, Kim   +10 more
core   +1 more source

Polypyrrole coating on aramid fabrics for improved stab resistance and multifunction

open access: yesJournal of Engineered Fibers and Fabrics, 2022
As an epoch of intelligent clothing is coming, soft body armor is required to possess not only improved mechanical performance but more functions, such as electronic conductivity, anti-ultraviolet capability, electrical heating property, etc.
Zhenqian Lu, Danyang Li, Zishun Yuan
doaj   +1 more source

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   +1 more source

Analysis of the history of creation and improvement of personal protective equipment: from bronze armor to modern bulletproof vests

open access: yesІсторія науки і техніки, 2023
In this article, using real historical examples, the authors tried to trace the evolution of personal protective equipment. This has made it possible to perform a comparative historical analysis of the development of scientific research and industrial ...
Oleh Strelko, Anatolii Horban
doaj   +1 more source

The Ballistic Performance of Laminated SiC Ceramics for Body Armor and the Effect of Layer Structure on It

open access: yesApplied Sciences, 2021
Laminated ceramics with weak interface layers have been proven to be effective in toughening ceramics. The energy absorption ability of laminated ceramics may also benefit their ballistic performance.
Yuzhe Hong   +9 more
doaj   +1 more source

Effect of the impact geometry in the ballistic trauma absorption of a ceramic multilayered armor system

open access: yesJournal of Materials Research and Technology, 2018
Ceramic armors are frequently used for protection against high energy projectiles, such as the 7.62 mm and 5.56 mm. Recently, it has been demonstrated that a modification in the geometry of the impact face, from flat to convex, enlarges the stress ...
Fábio de Oliveira Braga   +3 more
doaj   +1 more source

Bionic stab-resistant body armor based on triangular pyramid structure

open access: yesDefence Technology, 2021
A stab-resistant substrate was designed and realized with a triangular pyramidal structure, inspired by the biological armor model in nature. The stab-resistance behavior and dynamic response mechanisms were studied through numerical simulation and ...
Ya-xin Guo, Meng-qi Yuan, Xin-ming Qian
doaj   +1 more source

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