Part comes out curved instead of being perfectly flat


Part comes out curved instead of being perfectly flat
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Paulfr
Paulfr
Paulfr
posted 4 Years Ago HOT
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Hi,

I make carbon fiber fins for freediving
with OOA prepreg twill 200 gsm
I use a mold and a counter mold in press
and a heating system under the mold

The issue I am having:
Sometimes my part comes out curved lengthwise instead of being perfectly flat.

If anyone has an idea of to solve this issue it will help me a lot.

Thanks
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Rosta Spicl
Rosta Spicl
Rosta Spicl
posted 4 Years Ago HOT
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I guess unbalanced laminate or unbalanced heating the mould.
See my post just here:
http://www.talkcomposites.com/37742/Sandwich-panel-distorsion
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Part comes out curved instead of being perfectly flat
Paulfr - 4 Years Ago
     My guess would be either an asymmetrical, unbalanced (hard with cloth) laminate schedule or an unevenly cured or resin-bled part. How many plies? If you are using twill it should be that each ply i...
explorecomposites - 4 Years Ago
     I guess unbalanced laminate or unbalanced heating the mould. See my post just here: http://www.talkcomposites.com/37742/Sandwich-panel-distorsion
Rosta Spicl - 4 Years Ago
     Hi, Thanks for you advices. I'm using Twill 0 90° only (9 plies) There is a temperature controller on the mold. I will check the temperature on each side this week-end.
Paulfr1 - 4 Years Ago
     Hi, The mold was hotter on the ends than in the middle. I changed the position of the heating elements. The parts are now perfectly flat :-) Thanks a lot for the help.
Paulfr1 - 4 Years Ago

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