Its most easy to understand application in manufacturing is in creating more efficient structures, as a ratio of strength to material used. It's called "generative design", which is kind of an alternative to another interesting technique that doesn't typically use AI called "topology optimization", if you want to look at both of those. Unsurprisingly, they both end up looking very "organic".

This is the first article I found: https://parametric-architecture.com/nasa-uses-ai-to-design-mission-hardware-that-looks-somewhat-alien-and-weird/