Scratches and Structural Integrity of Carbon fibre frame

Discussion in 'Cycling Equipment' started by SniperX, Oct 24, 2007.

  1. SniperX

    SniperX New Member

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    Does anyone know if scratches on a carbon fibre frame will affect the structural integrity like the stiffness n performance of the frame?
     
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  2. Scotty_Dog

    Scotty_Dog New Member

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    Define "scratches".
     
  3. capwater

    capwater New Member

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    A scratch in the clearcoat is purely cosmetic, but if it is a true crack you need to take a serious look at it.
     
  4. kk4df

    kk4df New Member

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    You "score" glass (a deep scratch) in order to make it break along the score line. You don't want a scratch that penetrating. Not that carbon and glass are the same, but either is weakened along the score line by the scratch.
     
  5. SniperX

    SniperX New Member

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    The scratch is deep enuff to cause the paint to come off.. feels like someone juz keyed it or someting .. is that considered scored?
     
  6. artemidorus

    artemidorus New Member

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    Sounds like it is worth touching it up with a clear coat to try and prevent stress concentration. Are any of the fibres hanging out of the wound?
     
  7. SniperX

    SniperX New Member

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    No I dont think theres any fibres hanging out .. looks like paint that has come out to me but the scratch is deep enuff to be felt even thru a cleaning rag as I try to wipe n polish it .. what is stress concentration? have not heard of this term before ..
     
  8. alienator

    alienator Well-Known Member

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    Stress concentration is what happens when you worry that your expensive CF ride might be mortally wounded.
     
  9. SniperX

    SniperX New Member

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    oh meaning stress on myself mentally and not the bike huh? :( yeah it sure bugs the heck out of me... it appears to have gotten there thru rear wheel removal n the cassete somehow scraped it or sometin.. it wasnt due to a crash for sure .. so i figure that if that is the case it shuld be juz cosmetic ? :confused:
     
  10. artemidorus

    artemidorus New Member

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    It's what happens when you score a ceramic tile or a pane of glass and then bend it across the scored line.
     
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