Lightweight Ballistic Structures Made of Ceramic and Cermet / Aramide Composites

Gadow, R.; Niessen, Konstantin von

doi:10.1002/9781118406793.ch1

Cited by 8 publications

(9 citation statements)

References 3 publications

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“…It was interpreted that such a ceramic coating increases fibre-fibre frictional force and prevents wave distortion and delamination. In results, such a coated fabric help dissipates and damp the shock wave velocity of a penetrator [7].…”

Section: Effect Of Various Coating Materialsmentioning

confidence: 93%

“…This kind of body armor can provide superior ballistic performance compared to traditional ones such as chain mail and hard body armor with titanium or metallic sheets. The conventional body armor was bulky, inflexible, and not easily concealable; although it could provide a high level of resistance against ballistic or stab threats [1,2,[7][8][9]. High performance fibres, such as polyamides, aramid, S-glass, ultra high molecular weight polyethylene (UHMWPE) or polyphenylene benzobisoxazole (PBO), generally possess high strength, low density, high compressive strength, high energy absorption, and good adhesion to matrices for composite production [8,10,11].…”

Section: Motivationmentioning

confidence: 99%

“…Several commercial products are now available in market, especially for puncture/stab protection, such as Kevlar ® Correctional which is made of a high strength Kevlar ® fabric with a high yarn count [1,5]. Another example is a Twaron © Stab Resistant Material (SRM) which is made of Twaron © fabric embedded within a silicon carbide/polymer matrix composite [7]. The drawback of these products is that they are expensive and not necessarily capable of providing sufficient ballistic protection [1,5].…”

Section: Figurementioning

confidence: 99%

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An investigation of the mechanical and biological properties of nylon coated ultra-high-molecular-weight polyethylene

Firouzi¹

2023

Preprint

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In spite of considerable improvements in the manufacturing of body armor using lightweight and high-strength fibres, demands for lighter and more flexible products capable of providing sufficient protection against various types of threats has not waned. Among high strength fibres, ultra high molecular weight polyethylene (UHMWPE) possesses superior mechanical and physical properties. Nevertheless, the use of UHMWPE fabric with a shear thickening fluid (STF) materials for the manufacture advanced liquid body armors has been unsuccessful as this polymer is inherently inert and cannot bond or readily interact with other materials. To address these challenges, this research thesis focused on the development of a new method to increase the performance of UHMWPE fibre/fabric for high impact applications and improve its capability to bond with silica-based STF materials. A novel coating technique was developed using a nylon solution with UHMWPE fibre which results in a strong interlocking mechanism and the creation of a uniform coating without adding extra thickness to the fibre. Standard penetration tests showed considerable improvement in puncture/stab resistance of a nylon coated UHMWPE fabric compared with the uncoated fabric (with equivalent areal density) in terms of energy absorption, which was also explained by the scanning electron microscope (SEM) images of ruptured areas. In order to further improve the penetration resistance of UHMWPE fabric, a dispersion of fumed silica particles in polyethylene glycol (PEG) was synthesized exclusively via a novel sequential ultrasonication technique to incorporate with a multilayer stack of UHMWPE fabric. A complete set of rheological measurements, zeta potential and SEM analysis were done to study the viscoelastic characteristics and tune the stability of the synthesized STF samples. Evidence of the improved adhesion of STF materials to UHMWPE fibres coated with nylon from the SEM images was observed. Finally, while the evidence of improved mechanical properties of nylon coated UHMWPE were provided (e.g. higher creep resistance and toughness), its potential application for the manufacturing of medical devices was also explored. As a result, from the preliminary cytotoxicity and osteolysis assessments, it was shown that the biological compatibility of UHMWPE was improved when it was coated with nylon.

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Section: Effect Of Various Coating Materialsmentioning

confidence: 93%

Section: Motivationmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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An investigation of the mechanical and biological properties of nylon coated ultra-high-molecular-weight polyethylene

Firouzi¹

2023

Preprint

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“…Thermal-sprayed hard ceramic coatings were applied to aramid fabrics to enhance stabbing protection [6]. The resulted material demonstrated increased energy absorption during the quasi-static stabbing test, but also added to fabric weight significantly the same time.…”

Section: Introductionmentioning

confidence: 99%

Stabbing resistance of body armour panels impregnated with shear thickening fluid

Chen

Wang

et al. 2017

Composite Structures

100

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Please cite this article as: Xu, Y., Chen, X., Wang, Y., Yuan, Z., Stabbing r esistance of body ar mour panels impr egnated with shear thickening fluid, Composite Structures (2016), doi: http://dx.doi.org/10. 1016/ j.compstruct.2016.12.056 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Stabbing resistance of body armour panels impregnated with shear thickening fluid AbstractThis paper presents an investigation on the use of shear thickening fluid (STF) to improve stabbing resistance of soft ballistic body armour. STFs were produced from polyethylene glycol and silica nanoparticles. The effects of silica nanoparticle sizes and silica nanoparticle weight fraction were studied and STFs made with the different compositions were used to impregnate the Twaron ® woven fabrics. Systemic investigations into rheological behaviour of STF were carried out experimentally on STFs with different compositions. STF impregnated woven fabric panels were created and tested for stabbing resistance. Stabbing impact tests were conducted on 6 different types of STF impregnated fabric panels against 2 untreated fabric panels, and the results were studied against the benchmark fabrics without STF impregnation. Based on the same number of layers of fabric, the STF impregnation improves the stabbing resistance notably. For same panel areal density, the STF impregnated panels outperform the untreated fabric panel. The results of this research indicate the possibility of lighter ballistic panel materials for higher stabbing protection. It was also found that higher nanoparticle weight fraction and larger nanoparticle size of silica leads to better stabbing resistance performance among the STF impregnated panels.

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“…Thermal spraying is a well known technique used widely in industrial practice for decades, covering a broad range of applications, such as wear resistant layers, thermal barrier coatings and anticorrosive coatings (Saber-Samandari and Berndt, 2010 ). Thermal sprayed hard ceramic coatings have been applied onto woven aramid fabrics to increase their energy absorption in stab tests (Gadow and Niessen, 2006 ). However, a signifi cant increase of weight is associated with these cermet coatings.…”

mentioning

confidence: 99%

Ballistic and impact protection finishes for textiles

Bautista

2015

Functional Finishes for Textiles

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Lightweight Ballistic Structures Made of Ceramic and Cermet / Aramide Composites

Cited by 8 publications

References 3 publications

An investigation of the mechanical and biological properties of nylon coated ultra-high-molecular-weight polyethylene

An investigation of the mechanical and biological properties of nylon coated ultra-high-molecular-weight polyethylene

Stabbing resistance of body armour panels impregnated with shear thickening fluid

Ballistic and impact protection finishes for textiles

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