A brief description of the materials used while making bullet proof vests.

1. MATERIAL SELECTION FOR
BULLET PROOF VEST
Pratik Padhi
114ID0206

2.  Personal armor that helps absorb the impact and reduce or stop
penetration to the body from firearm-fired projectiles
 Military personnel, police, security guards, bodyguards

3. Required properties
Light-weight
Flexible
High tensile strength-to-weight ratio
Shock absorbing capacity
Materials
Kevlar
HSTP ( High Temsile Strength Polyethylene)
Ceramics
Composite fibers

4. Working Principle
When a hand gun bullet strikes body armor, it is caught in a "web" of
extremely strong fibers. These fibers absorb and disperse the impact
energy that is transmitted to the bullet proof vest from the bullet causing
the bullet to deform, otherwise known as a "mushroom". Additional
energy is absorbed by each successive layer or material in bullet proof
vests until such time as the bullet has been stopped.

5. Evolution
World War I German
Infanterie-Panzer, 1918
SWAT Kevlar bullet
proof vest, 2017

6. Properties

7. Manufacturing
Steps:
• Making the panel cloth
• Cutting the panels
• Sewing the panels
• Finishing the vest

8. THANK YOU!!