The study investigates the effects of projectiles on various wood-based frame panels for temporary unclassified buildings located in ballistically vulnerable locations (army headquarters, barracks, refugee shelters). The timber’s ballistic resistance, particularly the penetration depth, was tested for pine log, flat birch plywood, and spruce cross-laminated timber (CLT) - specimens of different thicknesses. The Poncelet model is used for the theoretical calculus of penetration of the bullets, which is consistent with the experimental results. As a result of the experiment for the unclassified buildings, a panel of 84 mm plywood and a particular combined panel are suggested. None of the other materials – logs up to 190 mm, CLT up to 120 mm, and plywood less than 84 mm used in experiments are suggested. It was confirmed that selecting the test sample/ wall thicknesses should be based on theoretical calculations. In a further experiment - a combined panel of 60 mm CLT, 50 mm rock wool insulation, and 26 mm (and double 26 mm) plywood was generated and tested. The given panels have been chosen as the most applicable in the Nordic region. Such bullet-proof panel buildings are relatively quick and easy to assemble and repair and thus could be used for short-stay accommodation in non-standard vulnerable situations.

bullet-proof, penetration depth, timber, unclassified buildings.

Received: May 9, 2022; Accepted: June 17, 2022; Published: July 8, 2022

How to cite this article: Elina Barone, Baiba Gaujena and Janis Videmanis, Projectile penetration depth into wood-based frames of unclassified buildings, Far East Journal of Mechanical Engineering and Physics 3 (2022), 11-20. http://dx.doi.org/10.17654/2229451122002

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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