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.

Breaking your car s windows in an emergency might be tougher than you think study says. Safety glass is the generic name for glass which has been treated to make it safer than normal glass. When broken the pieces form razor sharp edges that can cause serious injury. 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. I can break a big piece of tempered glass with a little ceramic chip. Second the rock may have a hardness similar to the glass. Although effective spark plug fragments will not work all the time.

It is brittle so it breaks easily. Normal float glass can be dangerous. The glass may be able to resist 200kg of evenly distributed load but that is very different from a rock. First this is impact not a uniform load.

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. When safety glass is damaged in this way the damage propagates throughout the glass rapidly and the tension within the glass. Spark plugs are made of aluminum oxide ceramic which is exceptionally hard.