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Abstract

In this study, the mechanical load on a bullet-shaped indenter when impacted by a single-ply Kevlar fabric was experimentally investigated using a reverse ballistics method at both quasi-static and dynamic rates. Different indenter geometries, namely the 9-mm Luger, .223 Remington, and .308 Winchester bullet geometries, were used. The penetration load of the stationary indenter was measured using a force transducer located behind the indenter, and the penetration load was then plotted against the impact velocity of the fabric sample. Different mechanisms of penetration were observed at different impact velocities. Penetration mechanisms were also found to be highly dependent on projectile nose geometry. A modified method to obtain an approximate ballistic limit based on the impact loads was used to compare the efficacy of different geometry types.

Keywords

reverse ballistics quasi-static dynamic single-ply geometry indenter

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References

Cunniff PM. A design tool for the development of fragmentation protective body armor. In: Proceedings of the 18th international symposium on ballistics, 1999, pp.1295–1302.

Cunniff PM. Dimensionless parameters for optimization of textile-based body armor systems. In: Proceedings of the 18th international symposium on ballistics, 1999.

Cunniff

. An analysis of the system effects in woven fabrics under ballistic impact. Text Res J 1992; 62: 495–509.

Cunniff

. A semiempirical model for the ballistic impact performance of textile-based personnel armor. Text Res J 1996; 66: 45–59.

Hudspeth

Agarwal

Andrews

. Degradation of yarns recovered from soft-armor targets subjected to multiple ballistic impacts. Composites Part A 2014; 58: 98–106.

Hockauf

Meyer

Pursche

. Dynamic perforation and force measurement for lightweight materials by reverse ballistic impact. Composites Part A 2007; 38: 849–857.

Montgomery

Grady

Tomasino

. The effects of projectile geometry on the performance of ballistic fabrics. Text Res J 1982; 52: 442–450.

Lim

Tan

Cheong

. Perforation of high-strength fabric by projectiles of different geometry. Int J Impact Eng 2003; 28: 207–222.

Guo

Hong

Zheng

. Loading rate effects on dynamic out-of-plane yarn pull-out. Text Res J 2014; 84: 1708–1719.

10.

Guo

. Out-of-plane effects on dynamic pull-out of p-phenylene terephthalamide yarns. Text Res J 2015; 85: 140–149.

11.

Wilde

. Photographic investigation of high-speed missile impact upon nylon fabric. Part II: retarding force on a missile and transverse critical velocity. Text Res J 1974; 44: 772–778.

12.

Termonia

. Impact resistance of woven fabrics. Text Res J 2004; 74: 723–729.

Reverse ballistics penetration of Kevlar® fabric with different indenters at different loading rates

Abstract

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