Numerical and Experimental Study of Hybrid Composite Body Armor

Saleem, Iftikhar; Abed, Mayyadah S.; Ahmed, Payman Sahbah

doi:10.30684/etj.v39i11.2274

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…It was left until full silicon curing of sandwich structure body armor samples. After completing the adhesive process, leave the sample at room temperature for 24 hours before using the samples in a ballistic test [14,15]. The MS hybrid polymer adhesive is excellent [16].…”

Section: The Layers Assembly and Fabrication Of Hybrid Sandwich Body ...mentioning

confidence: 99%

Exploring the impact resistance of hybrid sandwich composite body armor through experimental analysis

Khalaf,

Hamzah

2024

ETJ

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The hybrid composite sandwich was carefully assembled with silicon adhesive bonding the core and skins.• The composite skins were fabricated using the hand lamination technique. • Authentic ballistics tests were conducted on the fabricated specimens. • The refined design, sample (S3), effectively protected against penetration. • Silicone rubber fillings have higher energy absorption compared with foam fillings.Hybrid composite sandwich structures, known for remarkable energy absorption, rigidity, and strength, are emerging as a preferred choice for fortifying structures against a diverse range of firearms and artillery. Despite their higher density, these panels demonstrate commendable qualities, making them optimal for armored vehicles and body armor. Numerous structural options compete for recognition as effective ballistic shields in today's context. In this study, three sample configurations were rigorously tested for ballistic impact using a 7.62×39 mm bullet. The first sample (S1) comprised silicon carbide ceramic tiles (SiC), Kevlar fiber, and carbon fiber in the face sheet, with an unfilled aluminum honeycomb core and a carbon fiber rear sheet. Subsequent samples, S2 and S3, maintained the S1 composition but varied in the core. S2 had a honeycomb core injected with polyurethane foam, while S3 utilized a silicone rubber-filled honeycomb core. Ballistic tests revealed a notable difference: S1 and S2 failed to prevent bullet penetration, whereas S3 successfully met this crucial objective. After penetration, the bullets' velocities were S1 -45.9 m/s, S2-22.9 m/s, and S3 -0m/s. Remarkably, S3 exhibited an optimal 0mm back face signature (BFS) and a penetration depth (DOP) of 13.74 mm, well within limits. Cumulative energy absorption (EA) was as follows:

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Section: The Layers Assembly and Fabrication Of Hybrid Sandwich Body ...mentioning

confidence: 99%

Exploring the impact resistance of hybrid sandwich composite body armor through experimental analysis

Khalaf,

Hamzah

2024

ETJ

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Ballistic efficiency of hybrid multilayered body armor against 9 mm FMJ bullet

Tomman,

Abed,

Ahmed

2024

AIP Conference Proceedings

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Experimental and numerical studies of ballistic resistance of hybrid sandwich composite body armor

Khalaf,

Hamzah

2024

Open Engineering

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Defense mechanisms remain important and indispensable due to the different types of pistols and ordnance besides many guns. Hybrid composite sandwich panels are an attractive focus because of their ingrained characteristics, such as high stuffiness and high energy absorption. Hybrid composite sandwich panels are among the most important in armoring various structures. Despite the high density of these panels, they have significant qualities that qualify them to be the first selection for use in armored vehicles or body armor. Recently, there have been several types of structures, and selecting the appropriate structure as armor against the projectiles is very important. The study subjected three samples to the ballistic impact test using a 7.62 × 39 mm bullet. The first sample, S1, consists of ultra high molecular weight polyethylene (UHMWPE)/epoxy, unfilled honeycomb core, Kevlar/epoxy, unfilled honeycomb core, Kevlar/epoxy, and UHMWPE/epoxy; the second sample, S2, comprises Kevlar/epoxy, unfilled honeycomb core, Kevlar/epoxy, unfilled honeycomb core, and UHMWPE/epoxy, and the third sample, S3, comprises Al2O3, Kevlar/epoxy, unfilled honeycomb core, carbon/epoxy, unfilled honeycomb core, and carbon/epoxy. ABAQUS software was used to evaluate the ballistic impact numerically, and after that, the study examined the same armor samples experimentally. The results manifested that only the armor S3 succeeded in stopping the bullet. This is attributed to the structure of the cores, which helps compress and accumulate the cells under the projectile. The speeds of the bullet after penetration (residual velocity; VR) were 748.5 and 715.3 m/s for S1 and S2 armors, respectively, where the back face signature for S3 was 1.5 mm, which is optimum and within the allowed range. The total energy absorption of these armors S1, S2, and S3 is 344.65, 539.04, and 2585.66 J. Furthermore, the highest deviation between numerical and experimental approaches is about 2.04% in the VR.

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Numerical and Experimental Study of Hybrid Composite Body Armor

Cited by 4 publications

References 15 publications

Exploring the impact resistance of hybrid sandwich composite body armor through experimental analysis

Exploring the impact resistance of hybrid sandwich composite body armor through experimental analysis

Ballistic efficiency of hybrid multilayered body armor against 9 mm FMJ bullet

Experimental and numerical studies of ballistic resistance of hybrid sandwich composite body armor

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