Hybridized composite architecture for mitigation of non-penetrating ballistic trauma

Vargas-Gonzalez, Lionel; Gurganus, James C.

doi:10.1016/j.ijimpeng.2015.08.014

Cited by 33 publications

(16 citation statements)

References 27 publications

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“…Where E, ρ, σ, and Ɛ are the Young"s modulus, density, tensile strength, and tensile failure strain of the fibre. This analysis however does not consider several effects such as the matrix properties [13], the influence of fibre orientation [14], and strain rate dependency of the fibres [8]. It has recently been shown that the layup orientation can have a large effect on not only the velocity to 50% chance of perforation (V50), but also in limiting back face deflection (BFD) [14][15].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…This analysis however does not consider several effects such as the matrix properties [13], the influence of fibre orientation [14], and strain rate dependency of the fibres [8]. It has recently been shown that the layup orientation can have a large effect on not only the velocity to 50% chance of perforation (V50), but also in limiting back face deflection (BFD) [14][15]. Reducing BFD for an impact that does not cause laminate perforation is particularly important for applications such as helmets that have stringent design specifications to limit the amount of transverse deflection in order to prevent blunt trauma injuries.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…was used prior to SEM and the top layer was removed prior to surface scanning. Comparisons to virgin material post-manufacture are referred to throughout, and the reader is directed to available literature for reference [4,14]. The focus in this section was on the impact zone itself (Fig.…”

Section: Microscopymentioning

confidence: 99%

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Effect of fibre orientation on the low velocity impact response of thin Dyneema® composite laminates

Hazzard

Hallett

Curtis

et al. 2017

International Journal of Impact Engineering

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Ultra-high molecular weight polyethylene (UHMWPE) fibre reinforced composite materials are widely used in ballistic impact and collision scenarios due to their extremely high specific strength and stiffness. Exceptional levels of protection are provided by controlling the damage and deformation mechanisms over several length scales. In this study, the role of UHMWPE fibre architecture (cross-ply, quasi-isotropic and rotational "helicoidal" layups) is considered on the damage and deformation mechanisms arising from low velocity impacts with 150 J impact energy and clamped boundary conditions. Dyneema ® panels approximately 2.2 mm thick were impacted with a fully instrumented hemi-spherical impactor at velocities of 3.38 m/s. Full field deformation

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

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Effect of fibre orientation on the low velocity impact response of thin Dyneema® composite laminates

Hazzard

Hallett

Curtis

et al. 2017

International Journal of Impact Engineering

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“…The figure demonstrated that compared with the molding temperature of 80 °C, v 50 , E t , and E D respectively increased by 5.88%, 12.60%, and 11.80% when the molding temperature reached 120 °C. It has been demonstrated that the increased coupling with the boundaries of the composites through interlaminar shear, membrane stretching, and fiber pull‐in govern the energy absorption during the progressive penetration event . With the increasing of molding temperature, the interlaminar shear strength gradually increases.…”

Section: Resultsmentioning

confidence: 99%

“…It has been demonstrated that the increased coupling with the boundaries of the composites through interlaminar shear, membrane stretching, and fiber pull-in govern the energy absorption during the progressive penetration event. 32 With the increasing of molding temperature, the interlaminar shear strength gradually increases. Therefore, it can be deduced that the kinetic energy of the projectile can be validly dissipated by the delamination of the laminate prepared under higher molding temperature.…”

Section: Effect Of Molding Temperature On Ballistic Performance Of Uhmentioning

confidence: 99%

Experimental and simulated investigation of temperature distribution of UHMWPE laminated composites during hot pressing process

Zeng

Guo

et al. 2017

J of Applied Polymer Sci

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In this article, the influence of molding temperature on the mechanical properties and ballistic impact behavior of the ultrahigh molecular weight polyethylene (UHMWPE) laminated composites has been investigated. The results demonstrate that with the temperature increasing from 80 to 120 °C, the tensile strength decreases while the interlaminar bonding strength increases. The UHMWPE laminated composites manufactured by hot pressing of 75 layers UHMWPE fabrics show excellent ballistic performance when the molding temperature reaches 120 °C, indicating that dominant failure mechanism of the UHMWPE laminated composites are delamination, the fiber tension as well as bulging. Furthermore, a numerical model has been proposed to predict the temperature distribution of the UHMWPE laminated composites for a better understanding of the effect of molding temperature on the ballistic performance. The results show that the simulated results and experimental data are in good agreement. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45874.

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Influence of conditioning on the high strain rate compression response of Kevlar thermoplastic composites

et al. 2020

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Kevlar reinforced composite material systems are widely used for personal body armors. Due to aging or minor damage while in service, body armor may get exposed to external weather conditions, including moisture. The present study investigates the effect of moisture on the high strain rate behavior of Kevlar/Polypropylene (K‐PP) composite. Flat K‐PP composite laminate was manufactured using a vacuum‐assisted compression molding followed by laser machining. Dynamic compressive loading tests were performed using split Hopkinson pressure bar setup. The phenomenological modeling approach was adopted to characterize the rate‐dependent behavior of dry and wet composites. For identical dynamic compressive loading, different strain rates, strains, and stresses were attained by the dry and wet composite specimens. Macroscopic and microscopic imaging was done to expose the variation in damage behavior as a function of moisture absorption. Significant property reduction as a function of moisture absorption emphasizes the need for moisture proofing and protecting the armor products from minor damages leading to sites for moisture ingress.

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Hybridized composite architecture for mitigation of non-penetrating ballistic trauma

Cited by 33 publications

References 27 publications

Effect of fibre orientation on the low velocity impact response of thin Dyneema® composite laminates

Effect of fibre orientation on the low velocity impact response of thin Dyneema® composite laminates

Experimental and simulated investigation of temperature distribution of UHMWPE laminated composites during hot pressing process

Influence of conditioning on the high strain rate compression response of Kevlar thermoplastic composites

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