Thread: Carbon Fork Lifespan?
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Old 11-10-22, 07:05 AM
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Originally Posted by eduskator
Carbon Fiber HAS a fatigue limit. It's physics...
It is not. As a young engineer I worked at Thiokol (rocket motors) and can tell you carbon fiber does not have a fatigue limit (the number of cycles that a material survives with a given stress amplitude) as said but will degrade from fatigue, differently from metals that have a fatigue limit which typically shows up as a surface crack. Fatigue in a carbon lay-up can break fibers, cause resin bond to fiber failure or cause fabric layers to separate. Fortunately these conditions can usually be heard if one taps on the fork or frame and the sound is dull, more thud rather than the sharp sound one would expect.
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