On the ballistic resistance of double-layered steel plates: An experimental and numerical investigation

By S. Dey, T. Børvik, X. Teng, T. Wierzbicki, O. Hopperstad. 2007

255 citations recorded by the source corpus.

Abstract Civil and military ballistic protection systems often consist of thin, high-strength steel plates. Such plates may either be monolithic or layered with or without spacing. The idea of using layered plates instead of a monolithic one in order to increase the ballistic perforation resistance is not new, and the effect of using targets made up of several thinner plates has been investigated in the literature for a long time. However, results by various authors are contradicting and detailed experimental and numerical work is still required. In the present study, the ballistic perforation resistance of double-layered steel plates impacted by blunt and ogival projectiles was investigated both experimentally and numerically. In the tests, 12 mm thick (monolithic or layered) targets of Weldox 700 E were impacted using a gas-gun at sub-ordnance velocity, and the ballistic limit velocity of the different target combinations was obtained. In general, good agreement was obtained between the numerical simulations and the experimental results. It was found that in the case of blunt projectiles a large gain in the ballistic limit is offered by double-layered systems. These advantages seem to disappear when ogival projectiles are used. However, the main conclusion from both the experimental and numerical studies is that the overall protection level, i.e. the minimum ballistic limit velocity obtained independently of projectile nose shape, seems to increase significantly by double-layering the target.

Subfields: Aerospace Engineering, Civil and Structural Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/9fd821642af8d16a7aed22d1437853beb307fbfa

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In Aerospace Engineering

1. E. Flores-Johnson
2. L. Edwards
3. M. Saleh
4. S. Dey
5. T. Børvik
6. A. Clausen
7. O. Hopperstad
8. T. Wierzbicki

In Civil and Structural Engineering

1. E. Flores-Johnson
2. L. Edwards
3. M. Saleh
4. T. Børvik
5. S. Dey
6. A. Clausen
7. O. Hopperstad
8. M. Langseth

In Materials Chemistry

1. E. Flores-Johnson
2. L. Edwards
3. M. Saleh
4. S. Dey
5. T. Børvik
6. A. Clausen
7. R. Gamache
8. C. M. Roland

Citations in the corpus

• Perforation resistance of five different high-strength steel plates subjected to small-arms projectiles (2009, background): “Note also that if double-layered plates are impacted by blunt projectiles, causing plugging by shear localization, the ballistic perforation resistance has been found to increase considerably [25].”
• Elastomer-steel laminate armor (2010, background): “The behavior of the multi-laminates requires further study, although the effectiveness of armor having more than one layer has been reported previously for other structures [4,23–26].”
• Ballistic performance of multi-layered metallic plates impacted by a 7.62-mm APM2 projectile (2011, methodology): “[2] on the ballistic resistance of Weldox 700E steel in the sub-ordnance velocity range shows that 12 mm monolithic plate has better ballistic performance against ogival projectiles when compared with doublelayered plates with same thickness, while the opposite effect is observed when blunt projecti”