Okay kiddo, so imagine you have a toy car that you love to play with all the time. After a while, you notice that the wheels start to get worn out and eventually break off. This is because of something called wear and tear, which happens when you use something too much and it starts to break down.
Now, imagine that instead of a toy car, we're talking about a metal object, like a bicycle or a plane. When metal is exposed to certain things like water, air, and heat over a long period of time, it can start to break down too. This is called corrosion.
Corrosion can weaken the metal and make it more likely to break, especially if it's under a lot of stress, like a bicycle being ridden over bumpy terrain or a plane flying through turbulence. When this happens, it's called corrosion fatigue.
Basically, corrosion fatigue is when metal breaks down over time because of both corrosion and repeated stress. So, if you have a metal object that's exposed to the elements and you use it a lot, like a fence post or a bridge, it could eventually start to weaken and break down because of corrosion fatigue. That's why it's important to regularly inspect and maintain metal objects to prevent corrosion and keep them safe.