Yes, Jake , but the surprising part for me was, that there's a whole new dimension in talking about the strenght of a laminate.

I started building windsurf boards about 35 years ago and had very much to cope with the tension-strenght because of the extreme loads on a board at sea and after jumps.

When carbon and kevlar were invented and on the market a few years later, we directly started using it in strips for enforcements. (It costed a fortune that days!).

But our expectations were soon belied, because the boards broke even so. Later on when fiber-clothes were cheaper and cheaper we could use full-board covering with carbon and the breaking point was shifted in time.
But in those time we never thought about fatigue in our design considerations.

I'm still reading in this e-book which Carl mentioned and, honestly, it scares the hell out of me.

I'm now sailing three years on my homebuilt cat which has hulls of 60-70% carboncomposite. With exception of the joints of the (carbon) beams with the hulls, the fiberclothing was laid in the lenght-direction of the hulls, so no 45 degree crossed layer. I would do that differently knowing what I now learned about fatigue.

One thing I did right: I have made the beams with a full wooden core and a lot of UD carbon! (ended with 10 kg for a 260 cm beam).

So, returning to the subject of this thread, when you count fatigue under aging, then fiber composites do definetly age. I'm still reading about the carbon ones.