Reply to "Behind-Armor Blunt Trauma and backface deformation: pneumothorax, broken ribs, tissue damage?"

I think it's always worth recalling that anything up to a hair below 44mm of backface deformation is considered perfectly fine by the NIJ 0101.06 standard. Most alternative standards coming out of the UK (HOSDB), Continental Europe (Germany in particular), and China all require below 25mm to "pass" while the Russian GOST 50774-95 Standard and the 50774-95 ADD. 2014 revision of that standard require 16mm or less. As long as capture of both energy and spalling is not compromised, less BFD is always better at equivalent threat ratings.

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