Study on Protection Mechanism of 30CrMnMo-UHMWPE Composite Armor

Abstract

The penetration of a 30CrMnMo ultra-high molecular weight polyethylene armor by a high-speed fragment was investigated via experiments and simulations. Analysis of the projectile revealed that the nose (of the projectile) is in the non-equilibrium state at the initial stage of penetration, and the low-speed regions undergo plastic deformation. Subsequently, the nose-tail velocities of the projectile were virtually identical and fluctuated together. In addition, the effective combination of the steel plate and polyethylene (PE) laminate resulted in energy absorption by the PE just before the projectile nose impacts the laminate. This early absorption plays a positive role in the ballistic performance of the composite armor. Further analysis of the internal energy and mass loss revealed that the PE laminate absorbs energy via the continuous and stable failure of PE fibers during the initial stages of penetration, and absorbs energy via deformation until complete penetration occurs. The energy absorbed by the laminate accounts for 68% of the total energy absorption, indicating that the laminate plays a major role in energy absorption during the penetration process.

UHMWPE Nanocomposite Coatings Reinforced with Alumina (Al2O3) Nanoparticles for Tribological Applications

“…UHMWPE fibers have been used in personal and vehicle armor development, owing to its excellent impact resistance [9]. Its excellent wear and abrasion resistance have rendered it an excellent choice for industrial bearing applications [6,10].…”

Karakteristik Fiber Metal Laminate Akibat Beban Impak Balistik Dari Peluru Kaliber 9 mm Full Metal Jacket (FMJ)

“…Peluru dan plat aluminium menggunakan model plastisitas Johnson-Cook seperti pada persamaan 1. Kevlar/epoxy dimodelkan dengan model material orthotropik, jika material memiliki tiga bidang tegak lurus yang simetri, maka matriks kekakuannya ditunjukkan seperti pada persamaan 3 [14] dan hubungan regangan-tegangannya yaitu dengan invers matriks [C ij ] sehingga menjadi [S ij ] seperti pada persamaan 4 [15].…”

Experimental and Numerical Investigation of the Effect of Projectile Nose Shape on the Deformation and Energy Dissipation Mechanisms of the Ultra-High Molecular Weight Polyethylene (UHMWPE) Composite

“…For the sake of the armor design, the parameter study of the ballistic impact has attracted intensive attention. These parameters include the mechanical property and structure of the composites [ 1 , 5 ], impact velocity, and projectile geometry [ 6 , 7 , 8 ]. The studies have found that the projectile shape has significant influence on the deformation and failure mechanisms the composites [ 9 , 10 , 11 ].…”