Development of Steel Fiber Reinforced Concrete Panels to Resist Impact from 7.62 x 51 mm Caliber Size Bullets
Article Sidebar
Main Article Content
Abstract
This research aimed to develop the steel fiber reinforced concrete panels with an ability to resist impact force from 7.62 × 51 mm caliber size bullet. The panels were steel fiber reinforced concrete with 2% volume fraction of fiber and thickness varied from 10–100 mm. For the experimental procedure, the panel was shot by a bullet at the center and the impact event was captured using a high-speed camera with capture rate of 40,000 fps. In the data analysis, the kinetic energy absorption of panel can be calculated from the difference between the bullet kinetic energy (before and after impaction). The bullet velocities were calculated from images captured by the high-speed camera. The results showed that the impact resistance and the kinetic energy absorption ability increased with the increasing panel thickness. The bullet was resisted by the panel thickness of 60 mm but was observed the spalling and flying debris at the back surface. With the thickness larger than 80 mm, no perforation and cracking were observed on back surface. The damages of the panel (measured in forms of spalling diameter and weight loss percentage) related to the kinetic energy absorption ability of panel (Ep).
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
The articles published are the opinion of the author only. The author is responsible for any legal consequences. That may arise from that article.
References
S. Jitpiromsri, “Summary of Incidents in Southern Thailand,” Center for Conflict Studies and Cultural Diversity, Prince of Songkla University, Pattani Campus, January 2004 – June 2020 (in Thai).
Institute for Economics & Peace. Global Terrorism Index 2019: Measuring the impact of terrorism, [Online]. Available: http://visionofhumanity. org/reports/
D.-Y. Yoo and N. Banthia, “Impact resistance of fiber-reinforced concrete – A review,” Cement and Concrete Composites, vol. 104, 2019.
S. R. Abid, M. L. Abdul-Hussein, N. S. Ayoob, S. H. Ali, and A. L. Kadhum, “Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber,” Heliyon, vol. 6, no. 1, 2020.
P. Sukontasukkul, S. Jamnam, K. Rodsin, and N. Banthia, “Use of rubberized concrete as a cushion layer in bulletproof fiber reinforced concrete panels,” Construction and Building Materials, vol. 41, pp. 801–811, 2013.
S. Jamnam, B. Maho, A. Techaphatthanakon, and P. Sukontasukkul, “Investigation on bullet resistant of steel fiber reinforced concrete panel subjected to .44 Magnum bullet,” Journal of Thailand Concrete Association, vol. 7, no. 1, pp. 39–46, 2019 (in Thai).
S. Jamnam, B. Maho, A. Techaphatthanakon, Y. Sonoda, D. Yoo, and P. Sukontasukkul, “Steel fiber reinforced concrete panels subjected to impact projectiles with different caliber sizes and muzzle energies,” Case Studies in Construction Materials, vol. 13, 2020.
R. Sovják, T. Vavřiník, J. Zatloukal, P. Máca, T. Mičunek, and M. Frydrýn, “Resistance of slim UHPFRC targets to projectile impact using in-service bullets,” International Journal of Impact Engineering, vol. 76, pp. 166–77, 2015.
R. Sovják, D. Shanbhag, P. Konrád, and J. Zatloukal, “Response of thin UHPFRC targets with various fibre volume fractions to deformable projectile impact,” in Proceedings AMCM, 2017, vol. 193, pp. 3–10.
J. Fenga, X. Gao, J. Li, H. Dong, W. Yao, X. Wang, and W. Sun, “Influence of fiber mixture on impact response of ultra-high-performance hybrid fiber reinforced cementitious composite,” Composites Part B: Engineering, vol. 163, pp. 487–496, 2019.