Numerical and Experimental Study of Ballistic Response of Kevlar Fabric and Kevlar/Epoxy Composite

Authors

Mechanical Engineering Department , Bu-Ali Sina University, Hamedan, Iran

Abstract

Kevlar is a type of aramid fibers which is characterized by high strength to low weight ratio. This material is widely used in bulletproof vests and helmets, in which it creates a barrier to projectiles to protect specific objectives, laminated tubes and pressure vessels, etc. In this study the ballistic behavior of Kevlar /epoxy composite and Kevlar fabric is investigated. The results showed that Kevlar fabrics were more resistant against projectiles. Tensile and punch tests revealed that although the Kevlar/Epoxy composite enjoys higher strength, undergoes lower deformation than Kevlar fabric. The results also indicated that the failure mechanism of Kevlar fabric was quite ductile whereas the presence of epoxy in Kevlar/epoxy changed the failure mechanism from ductile to brittle in the form of plugging in ballistic tests. Finally, the ballistic behavior of the Kevlar fabric was simulated by ABAQUS finite element software and the results were validated by the experiment. 

Keywords

References

1.     Tapie, E., Shim, V. and Guo, Y., "Influence of weaving on the mechanical response of aramid yarns subjected to high-speed loading", International Journal of Impact Engineering,  Vol. 80, (2015), 1-12.
2.     Sanborn, B. and Weerasooriya, T., "Quantifying damage at multiple loading rates to kevlar km2 fibers due to weaving, finishing, and pre-twist", International Journal of Impact Engineering,  Vol. 71, (2014), 50-59.
3.     Das, S., Jagan, S., Shaw, A. and Pal, A., "Determination of inter-yarn friction and its effect on ballistic response of para-aramid woven fabric under low velocity impact", Composite Structures,  Vol. 120, (2015), 129-140.
4.     Okafor, E.C., Ihueze, C.C. and Nwigbo, S., "Optimization of hardness strengths response of plantain fibres reinforced polyester matrix composites (pfrp) applying taguchi robust resign", International Journal of Science & Emerging Technologies,  Vol. 5, No. 1, (2013).
5.     Tham, C., Tan, V. and Lee, H.-P., "Ballistic impact of a kevlar® helmet: Experiment and simulations", International Journal of Impact Engineering,  Vol. 35, No. 5, (2008), 304-318.
6.     Zhu, D., Vaidya, A., Mobasher, B. and Rajan, S.D., "Finite element modeling of ballistic impact on multi-layer kevlar 49 fabrics", Composites Part B: Engineering,  Vol. 56, (2014), 254-262.
7.     Lee, Y.S., Wetzel, E.D. and Wagner, N.J., "The ballistic impact characteristics of kevlar® woven fabrics impregnated with a colloidal shear thickening fluid", Journal of Materials Science,  Vol. 38, No. 13, (2003), 2825-2833.
8.     Majzoobi, G. and Moradi, S., "The ballistic behavior of high strength, low alloy-100 steel at sub-zero temperatures", International Journal of Engineering, Transactions C: Aspects,  Vol. 29, No. 12, (2016), 1747-1756.
9.     Nilakantan, G., "Filament-level modeling of kevlar km2 yarns for ballistic impact studies", Composite Structures,  Vol. 104, (2013), 1-13.
10.   Gu, B., "Analytical modeling for the ballistic perforation of planar plain-woven fabric target by projectile", Composites Part B: Engineering,  Vol. 34, No. 4, (2003), 361-371.
11.   Cheeseman, B.A. and Bogetti, T.A., "Ballistic impact into fabric and compliant composite laminates", Composite Structures,  Vol. 61, No. 1, (2003), 161-173.
12.   Kumar, S., Gupta, D.S., Singh, I. and Sharma, A., "Behavior of kevlar/epoxy composite plates under ballistic impact", Journal of Reinforced Plastics and Composites,  Vol. 29, No. 13, (2010), 2048-2064.
13.   Heydari, M. and Choupani, N., "A new comparative method to evaluate the fracture properties of laminated composite", International Journal of Engineering,  Vol. 27, No. 6., (2014), 1025-2495.
14.   Lim, C., Shim, V. and Ng, Y., "Finite-element modeling of the ballistic impact of fabric armor", International Journal of Impact Engineering,  Vol. 28, No. 1, (2003), 13-31.
15.   Rao, M., Duan, Y., Keefe, M., Powers, B. and Bogetti, T., "Modeling the effects of yarn material properties and friction on the ballistic impact of a plain-weave fabric", Composite Structures,  Vol. 89, No. 4, (2009), 556-566.
16.   Silva, M.A., Cismaşiu, C. and Chiorean, C., "Numerical simulation of ballistic impact on composite laminates", International Journal of Impact Engineering,  Vol. 31, No. 3, (2005), 289-306.
17.   Omidvar, H., Azari, K., Taheri, A.M. and Saghafi, A., "Impact and ballistic behavior optimization of kevlar–epoxy composites by taguchi method", Arabian Journal for Science and Engineering,  (2012), 1-7.
18.   Jamal-Omidi, M. and Suki, M.M., "A numerical study on aluminum plate response under low velocity impact", International Journal of Engineering-Transactions C: Aspects,  Vol. 30, No. 3, (2017), 439.
19.   Reis, P., Ferreira, J., Zhang, Z., Benameur, T. and Richardson, M., "Impact response of kevlar composites with nanoclay enhanced epoxy matrix", Composites Part B: Engineering,  Vol. 46, (2013), 7-14.
20.   Woo, S.-C. and Kim, T.-W., "High-strain-rate impact in kevlar-woven composites and fracture analysis using acoustic emission", Composites Part B: Engineering,  Vol. 60, (2014), 125-136.
21.   Khamedi, R. and Pedram, O., "Cluster analysis of acoustic emission signals for carbon/epoxy composite in four-point bending test (research note)", International Journal of Engineering, Transaction C: Applications,  Vol. 28, No. 9, (2015), 1336-1342.
22.   Nassehi, V., Hashemi, S. and Beheshty, M., "A numerical method for the determination of an effective modulus for coated glass fibers used in phenolic composites", International Journal of Engineering,  Vol. 13, No. 3, (2000), 1-10.
23.   Khalkhali, A., Roshanfekr, S. and Toraabic, M., "Multi-objective optimization of a projectile tip for normal penetration", International Journal of Engineering-Transactions A: Basics,  Vol. 26, No. 10, (2013), 1225.
24.   Lambert, J. and Jonas, G., "Towards standardization in terminal ballistics testing: Velocity representation" (1976), DTIC Document.
International Journal of Engineering
Volume 30, Issue 5
TRANSACTIONS B: Applications
May 2017
Pages 791-799

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