Optimal Designing Of Soft Body Armour Materials Using Shear

  • CARBON NANOTUBE SOFT BODY ARMOR - UMD

    Hard body armor is made from heavy ceramic plates, and is used to stop higher caliber rounds. [1] Soft body armor is made from 20-50 layers of Kevlar. [1] The average soldier already carries over 100 lbs in gear, bulky armor only makes this load more unwieldy. [2] A stronger material will allow for a lighter, less bulky vest.

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  • Body Armor Materials | Materials Used For Body Armor

    May 04, 2018· Kevlar®, The Most Well Known Body Armor Material. DuPont™ has developed law enforcement and body armor materials for more than 40 years. Its Kevlar® brand fiber, first developed in 1965, was the first material identified for use in the modern generation of a concealable bulletproof vests. Kevlar® is a man made hydrocarbon fiber, with a ...

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  • New Shear Thickening Fluid (STF) enables flexible ...

    Aug 13, 2006· A Shear Thickening Fluid (STF) is the key component of the liquid body armor. Hard particles (nano-particles of silica) are suspended in polyethylene …

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  • Optimal designing of soft body armour materials using ...

    This paper deals with the optimal design of soft body armour materials by treating Kevlar (para-aramid) fabrics with silica nano-particle based shear thickening fluid (STF).

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  • The Use of Laminates of Commercially Available Fabrics for ...

    Mar 29, 2021· 1. Introduction. Protective body-armor has a long history, as protection against arrows, spears and knives in battles was used in ancient times [].The application of linen laminates dates back 3000 years ago to the Egyptian empire, where lightweight, wearable and easy formable body-armor was used [].Contemporary studies [] of linen laminates fabricated using ancient techniques and materials ...

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  • Dynamic/quasi-static stab-resistance and mechanical ...

    Aug 15, 2017· Soft body armour composites were constructed by combining Kevlar fabrics with different quantities of shear thickening fluid (STF). In particular, the quantity of the added STF and the mechanical properties of these composites were systemically explored. The dynamic and quasi-static knife-stabbing resistance and th

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  • 4 Clay and Backing Materials | Testing of Body Armor ...

    The Army’s protocol for ballistic testing of soft and hard body armor specifies RP #1 as the backing material (DoD, 2008). However, it would not be an exaggeration to say that the move of RP #1 from being a material of convenience to becoming an industry standard was an accident of history, because it is a far from ideal backing material for ...

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  • The influence of graphene nanoplatelets (GNPs) on the semi ...

    Jan 30, 2018· A. Majumdar, B. S. Butola and A. Srivastava, Optimal designing of soft body armour materials using shear thickening fluid, Mater. Des. , 2013, 46 , 191 —198 CrossRef CAS . A. Laha and A. Majumdar , Interactive effects of p -aramid fabric structure and shear thickening fluid on impact resistance performance of soft armor materials, Mater.

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  • The stab resistance of fabrics impregnated with shear ...

    Mar 01, 2017· Optimal designing of soft body armour materials using shear thickening fluid Mater Des , 46 ( 2013 ) , pp. 191 - 198 Article Download PDF View Record in Scopus Google Scholar

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  • Shear thickening in colloidal dispersions

    Shampoos, paints, cements, and soft body armor that stiffens under impact are just a few of the materials whose rheology is due to the change in viscosity that occurs when colloidal fluids experience shear stress. Norm Wagner is the Alvin B. and Julia O. Stiles Professor and chairperson of the department of chemical engineering at the University of

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  • Rheological behavior - Soft-Matter

    Sep 14, 2009· Application: Body Armor. From Wikipedia: Various corporate and government entities are researching the application of shear thickening fluids for use as body armor. Such a system could allow the wearer flexibility for a normal range of movement, yet provide rigidity to resist piercing by bullets, stabbing knife blows, and similar attacks.

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  • A review of fibrous materials for soft body armour ...

    Jun 26, 2018· Meanwhile, carbon fibers are strong, rigid, lightweight, and resistant to fatigue failure. The present research created soft body armor with materials made from carbon-aramid fibers based on the Taguchi method. The objective of this study was to obtain the optimal combination of soft body armor material based on the test results.

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  • New Body Armor for 2021 | The Armory Life

    Feb 17, 2021· By Scott Conditt. W e’ve come a long way in the development of materials, design styles, ergonomics and comfort when it comes to body armor in 2021. Never before have American citizens had so many options for this life-saving gear. In fact, the sale and general purchasing trends for armor to the civilian market has seen a steady increase in the last decade.

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  • Digital human modeling for optimal body armor design

    weight metric has also been successfully used as a constraint in the optimal armor design. In summary, this work provides 1) initial steps towards an automated design tool for body armor, 2) a means for integrating different analysis models, and 3) a unique example of human-in-the-loop analysis and optimization.

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  • Effect of matrix on ballistic performance of soft body armor

    Effect of matrix on ballistic performance of soft body armor G. Gopinatha, J.Q. Zhengb, R.C. Batraa,⇑ a Department of Engineering Science and Mechanics, M/C 0219, ia Polytechnic Institute and State University, Blacksburg, VA 24061, USA bProgram Executive Office, US Army, 15395 John Marshall Highway, Haymarket, VA 20169, USA article info Article history:

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  • Shear behavior of a shear thickening fluid-impregnated ...

    Jul 15, 2016· Shear-thickening fluid-impregnated aramid (STF-im-AR) fabrics have been manufactured for advanced soft body armor applications for which they provide improved ballistic and stab resistances. It is not yet clear whether or not such improvements can be attributed solely to the STF.

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  • Body armor for stab and spike protection, Part 1 ...

    Feb 15, 2017· Ding J, Nayak R and Wang L. Enhanced stab resistance of soft body armour fabric with novel shear thickening fluid. In: Land conference 2016 , Adelaide, Australia, 2016, File name: FLFC16_paper_31.pdf.

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  • US7226878B2 - Advanced body armor utilizing shear ...

    An armor composite material has been invented which contains a ballistic fabric which has been impregnated with shear thickening fluid. This invention offers a ballistic resistant material that is more flexible and less bulky than comparable, conventional ballistic fabric. The invented material offers superior ballistic performance compared to conventional ballistic fabric-based materials …

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  • Acoustic energy harnessed to soften shear-thickening ...

    Sep 17, 2019· Researchers are using ultrasonic waves to manipulate the viscosity of shear-thickening materials, turning solids to slush -- and back again. ... material range from soft body armor …

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  • The materials & technologies used in body armour

    Like its soft body armour counterparts, today’s hard armour is constructed from a diverse range of materials. The most common type of hard armour plate utilises ceramic or ceramic composite, frequently incorporating para-aramid backing with a material such as Aramid fiber®. The least expensive type of hard armour, it is also the heaviest.

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  • (PDF) Soft Body Armor: An Overview of Materials ...

    Aug 01, 2011· Soft Body Armor: An Overview of Materials, Manufacturing, Testing, and Ballistic Impact Dynamics ... Specifica lly, this report focuses on the design, materials, and ... The shear …

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  • Novel PBA-Grafted Carbon Nanotube Soft Body Armor

    being lightweight. Body armor also functions on the basis of being strong and lightweight. Through the use of one strong and light material with another, we will create a composite material that is even stronger while still being light. The use of CNTs in the project also draws on knowledge of nanosized materials, and how to use them safely.

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  • High-velocity impact of solid objects on Non-Newtonian ...

    Feb 04, 2019· Majumdar, A., Butola, B. S. & Srivastava, A. Optimal designing of soft body armour materials using shear thickening fluid. Materials & Design 46 , …

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  • The optimization of soft body armor materials made from ...

    Jun 26, 2018· Meanwhile, carbon fibers are strong, rigid, lightweight, and resistant to fatigue failure. The present research created soft body armor with materials made from carbon-aramid fibers based on the Taguchi method. The objective of this study was to obtain the optimal combination of soft body armor material …

    Read More
  • What Material is Used for Body Armor | Military-Today.com

    Nowadays, the best material for body armor is polyethylene. Because many soft and hard body armor products are made from it. Kevlar, steel, and Polyethylene (PE) are the most used materials in the production of body armors. Kevlar and Polyethylene are primarily used to make soft body armor, while steel and ceramics are used to make hard body armor.

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  • Abhijit Majumdar*, Bhupendra Singh Butola and Ankita ...

    Abhijit Majumdar*, Bhupendra Singh Butola and Ankita Srivastava, Optimal Designing of Soft Body Armour Materials Using Shear Thickening Fluid, Materials and Design, (Volume 46, …

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  • Incorporation of shear thickening fluid effects into ...

    Nov 21, 2019· Shear thickening fluid–impregnated fabrics have been proven as an ideal candidate for producing comfortable, high-performance soft body armour. However, the mechanism of defeating a projectile using a shear thickening fluid–impregnated multi-layered fabric is not fully understood and can be considered as a gap in the research done on the ...

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  • Materials Behind Body Armour | Tactical Distributors

    CoolMAX is a lightweight material that helps with moisture wicking by drawing sweat away from the body while also keeping the wearer cool. Gore-Tex is a breathable fabric that is incredibly strong and has waterproof qualities for added performance. You will find both of these materials on a range of body armor, especially on police body armor.

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  • New polymer armors can stop bullets

    Aug 03, 2015· New polymer armors can stop bullets. Polymer Solutions News Team August 3, 2015. Body armor has been in constant competition with weapons since the dawn of human violence. As weapons improve, so too does armor, and vice versa – one drives the other in this symbiotic relationship. Primitive means of protection such as wood, bone and stone gave ...

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  • Optimal designing of soft body armour materials using ...

    Apr 01, 2013· This paper deals with the optimal design of soft body armour materials by treating Kevlar (para-aramid) fabrics with silica nano-particle based shear thickening fluid (STF).

    Read More
  • US7498276B2 - Advanced body armor utilizing shear ...

    An armor composite material has been invented which contains a fabric which has been impregnated with shear thickening fluid. This invention offers a ballistic resistant material that is more flexible and less bulky than comparable, conventional ballistic fabric. The material in the alternative can be puncture resistant. The invented material offers superior ballistic performance and/or ...

    Read More
  • US7498276B2 - Advanced body armor utilizing shear ...

    An armor composite material has been invented which contains a fabric which has been impregnated with shear thickening fluid. This invention offers a ballistic resistant material that is more flexible and less bulky than comparable, conventional ballistic fabric. The material in the alternative can be puncture resistant. The invented material offers superior ballistic …

    Read More
  • Effects of silica morphology on the shear‐thickening ...

    Dec 18, 2019· Shear‐thickening fluid (STF) refers to a system where nonaggregating solid particles are suspended in a specific fluid. Due to its unique viscosity variation, STFs have attracted a lot of attention as soft body armor materials for impact protection.

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  • Evolution of Soft Body Armor - Advanced Textile ...

    Sep 03, 2018· Sanchi Arora, Abhijit Majumdar, Bhupendra Singh Butola, Soft Armour Design by Angular Stacking of Shear Thickening Fluid Impregnated High-Performance Fabrics for Quasi-Isotropic Ballistic Response, Composite Structures, 10.1016/j.compstruct.2019.111720, (111720), (2019).

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  • Development of Stab Resistant Body Armor Using Fumed …

    The idea of making flexible body armor utilizing shear thickening fluid (STF) is not new. Researchers have studied STF/fabric composites for several years [1-4]. These studies report the ballistic performances of composite materials composed of Kevlar fabric impregnated with a colloidal shear thickening fluid (micron size silica particles

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  • A review of fibrous materials for soft body armour ...

    Jan 08, 2020· Researchers have also explored the possibility of using multi-axial warp knitted fabrics and 3D woven fabrics in soft body armour. 13,14 In the last two decades, the idea of using shear thickening fluid (STF) to improve the energy absorption capability of soft body armour …

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  • Ballistic Performance of Shear Thickening Fluids (STFs ...

    Jan 09, 2021· In order to exploit future soft body armor to achieve a more comprehensive protection than just the torso part of the body, in this study, shear thickening fluids (STFs) with different rheological properties are fabricated by planetary mixer and three-roller mills to investigate the mixing process effect on the resultant rheological behavior.

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  • Section D - LIQUID BODY ARMOR

    The first aspect of designing a bullet resistant vest is to determine which type of vest it will be. There are four types of body armor: hard, soft, liquid, and composite. Hard body armor describes body armor that contains hard, ballistic plates intended to stop high velocity rounds, such as from rifles.

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  • Overview of soft body armour, its materials and importance

    Aug 20, 2020· Designing Soft Body Armour: The principal factors that dictate the design of any type of body armour are the type(s) of threats for which the protection is primarily required. The Weight, mobility, and comfort are therefore very important factors to consider in ensuring that the armours conform to the user’s body.

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  • Rheological behavior - Soft-Matter

    Sep 14, 2009· Application: Body Armor. From Wikipedia: Various corporate and government entities are researching the application of shear thickening fluids for use as body armor. Such a system could allow the wearer flexibility for a …

    Read More

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