Thread: Bike Snob NY (Eben Weiss) on carbon
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Old 02-11-24, 11:12 AM
  #160  
3alarmer
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Despite their high initial strength-to-weight ratios, a design limitation of CFRPs are their lack of a definable fatigue limit. This means, theoretically, that stress cycle failure cannot be ruled out. While steel and many other structural metals and alloys do have estimable fatigue or endurance limits, the complex failure modes of composites mean that the fatigue failure properties of CFRPs are difficult to predict and design against. As a result, when using CFRPs for critical cyclic-loading applications, engineers may need to design in considerable strength safety margins to provide suitable component reliability over its service life.
https://en.wikipedia.org/wiki/Carbon...ers#Properties
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