Polymer Ambassadors PDF
Preview Polymer Ambassadors
Impact of Polymers in Impact Sports Ohio Polymer Ambassador : Sandy Van Natta [email protected] Historical Perspective Wall painting from an Egyptian tomb at Hierakonpolis Circa 4000 BC Illustrations by R Hutchins, J Mason & G Bingham R Woosnam Savage & A Hall, Body Armour, Brassey’s, Virginia 2001 The First Polymeric Body Armour Egyptian infantryman From 19th century BC Leather helmet & padded linen cuirass Hide covered shield and groin defender Illustrations by R Hutchins, J Mason & G Bingham R Woosnam Savage & A Hall, Body Armour, Brassey’s, Virginia 2001 An Assyrian infantryman 7th century BC Bronze helmet & pectoral with wickerwork shield Illustrations by R Hutchins, J Mason & G Bingham R Woosnam Savage & A Hall, Body Armour, Brassey’s, Virginia 2001 The Wilderness Years for Polymers 500 BC and the end of the 1st age of polymer body armour! A roman legionary wearing chain mail body armour and a bronze Coolus type helmet. The shield is still wood & leather with an iron boss. About the same time: The first use of body armour in sport! Retiarius the most famous gladiatorial style Illustrations by R Hutchins, J Mason & G Bingham R Woosnam Savage & A Hall, Body Armour, Brassey’s, Virginia 2001 In 1066 the Normans still used wood & leather shields in the invasion of what is now the UK World War 1 The return of polymeric body armour High silk ballistic collar 1916 PH gas helmet and the “small box” respirator Illustrations by R Hutchins, J Mason & G Bingham R Woosnam Savage & A Hall, Body Armour, Brassey’s, Virginia 2001 Helmets & Flak Jackets from polymer-fibre composites Illustrations by R Hutchins, J Mason & G Bingham R Woosnam Savage & A Hall, Body Armour, Brassey’s, Virginia 2001 Police Helmets, Flak Jackets and Plate-Foam Pads The modern policeman complete with foam flak jacket & helmet and defensive energy absorbing foam protection and a polycarbonate shield. Illustrations by R Hutchins, J Mason & G Bingham R Woosnam Savage & A Hall, Body Armour, Brassey’s, Virginia 2001 Ballistic, sharp or blunt? Bullets Balls velocity > 300 m s-1 velocity < 50 m s-1 energy < 10 J energy < 5 J mass < 20 g mass < 100 g Knives People velocity > 1 m s-1 velocity < 10 m s-1 energy > 1 kJ energy > 2 kJ mass < 1 kg mass < 200 kg Guns killed suits of armour but Baseball reinvented them!
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