Safety Glass Breaks If Hit By Ceramic

Why will a piece of ceramic break safety glass but a similar sized rock just bounces off.

Safety glass breaks if hit by ceramic.

Safety glass is designed to shatter differently from other types of glass to help prevent injuries from flying shards. Aaa found that more and more cars are being equipped with laminated side windows that are almost impossible. 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. It is brittle so it breaks easily.

Breaking your car s windows in an emergency might be tougher than you think study says. Although effective spark plug fragments will not work all the time. Second the rock may have a hardness similar to the glass. First this is impact not a uniform load.

This concentrates the force of the hit to a small enough area on the glass that it can scratch and fracture it. Safety glass is the generic name for glass which has been treated to make it safer than normal glass. The glass may be able to resist 200kg of evenly distributed load but that is very different from a rock. Spark plugs are made of aluminum oxide ceramic which is exceptionally hard.

When regular glass shatters it breaks into several sharp pieces and spreads everywhere. When safety glass shatters it is designed to stay in one place keeping all shards together and preventing sharp edges from harming people. I can break a big piece of tempered glass with a little ceramic chip.