Are carbon fiber rims susceptible to fatigue? While reading this question's take on the wearing out of aluminum rims used on bikes with disc brake systems, the inquiry was projected further to include carbon fiber, disc brake rims.  Do carbon fiber disc brake rims ever wear out through fatigue?

Also, do the nipples have any additional support (from material other than carbon fiber) at the rim to deal with the concentrated forces there?
The answer seems to be that material engineers don't have a good understanding of carbon fiber composite fatigue I'm guessing because there is a wide spectrum of CFC layups using different epoxy formulations, fiber weaves and fiber/epoxy ratios. The article quoted below also says there are many failure modes for CFC whereas metal has just one: cracking.

From https://www.quora.com/How-does-carbon-fiber-CFRP-behave-in-fatigue


  technically they are pretty good, better than most metals. However their fatigue
  resistant properties are not used by the Aerospace industry. The issue is that
  composite fatigue is extremely hard to predict, with results having a very wide
  scatter. Basically we know they are really good, but cannot confidently quantify how
  good.