Safety Glass Breaks If Hit By Ceramic

First this is impact not a uniform load.

Safety glass breaks if hit by ceramic.

Safety glass is the generic name for glass which has been treated to make it safer than normal glass. Aaa found that more and more cars are being equipped with laminated side windows that are almost impossible. I can break a big piece of tempered glass with a little ceramic chip. Safety glass is designed to shatter differently from other types of glass to help prevent injuries from flying shards.

This concentrates the force of the hit to a small enough area on the glass that it can scratch and fracture it. Although effective spark plug fragments will not work all the time. When broken the pieces form razor sharp edges that can cause serious injury. The impact of the shard against the glass creates a tiny structural failing which rapidly spreads the tension through the rest of the screen causing it to break.

Normal float glass can be dangerous. When regular glass shatters it breaks into several sharp pieces and spreads everywhere. When safety glass is damaged in this way the damage propagates throughout the glass rapidly and the tension within the glass. The glass may be able to resist 200kg of evenly distributed load but that is very different from a rock.

Breaking your car s windows in an emergency might be tougher than you think study says. Second the rock may have a hardness similar to the glass. When safety glass shatters it is designed to stay in one place keeping all shards together and preventing sharp edges from harming people.