WWI helmets protect against shock waves just as well as modern designs

Biomedical engineers have demonstrated that, despite significant advancements in protection from ballistics and blunt impacts, modern military helmets are no better at protecting from shock waves than their World War I counterparts. One model in particular, the French Adrian helmet, actually performed better than modern designs. The research could help improve the blast protection of future helmets through choosing different materials, layering multiple materials of different acoustic impedance, or altering their geometry.