P6_3 Bulletproof T-Shirts

Joe Henry Marsden, Guy Norman Taylor Levin, Jacob Eddison, Darshan Vigneswara


The world record number of T-shirts worn is 257, in this paper we calculate whether this many
layers is sucient to stop a 9 mm and a 7.62 mm bullet. Our conclusion is that only 168 shirts
are needed to protect against a 9 mm round but you need 316 Shirts to stop a 7.62 mm round
(a typical Ri e bullet). We compare our results to traditional body armour and show that the
T-shirts are at least 10x less eective.

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