Daffodil International University

Faculty of Engineering => EEE => Topic started by: saikat07 on February 28, 2020, 09:12:49 PM

Title: 50 years ago, bulletproof armor was getting light enough to wear
Post by: saikat07 on February 28, 2020, 09:12:49 PM

Many boron carbide armor components have been replaced by Kevlar, which was developed around the same time (SN Online: 4/8/15). Made of woven synthetic polymer chains, Kevlar fast became essential wear for soldiers and law enforcement officers. More than eight times the tensile strength of steel, the textile distributes the energy of a bullet impact over a large area. Some modern body armor systems today weigh a tenth of their boron carbide counterparts. Scientists are testing engineered spider silk, another strong and flexible textile, for body armor (SN: 5/11/19, p. 24).