ELI5: Explain Like I'm 5

Lay-up process

Okay kiddo, today we are going to talk about the lay-up process. Imagine that we want to make a cake. We need to collect all the ingredients like eggs, flour, sugar, butter and mix them together. Similarly, the lay-up process is also a recipe, but instead of making a cake, we make a material called composite.

Composite is a special material that is made by combining two different materials - fibers and resin. The fibers are long and thin like spaghetti, and the resin is a sticky liquid, like honey. When we mix these two materials together, they make a very strong and lightweight material.

Now, let's make a composite. First, we need to cut the fibers into small pieces and arrange them in the shape we want. This shape could be a rectangle or a circle or any other shape. Then we pour the sticky resin over the fibers, making sure all the fibers are covered in resin.

Next, we add another layer of fibers on top of the wet resin, and then we pour more resin on top of that. We repeat this process again and again, adding more layers of fibers and resin until we have enough layers to make our final part.

After we have added all the layers, we leave it to dry for some time. Slowly the sticky resin hardens and becomes solid, just like how cake batter becomes a cake in the oven. Now, our composite part is ready!

This lay-up process is used to make many things like airplane wings, car parts, and even sports equipment. It's a really cool process that combines different materials to make something strong and lightweight.