Thick walls lose their grip
In a thick wall, every new layer presses on the layers beneath and squeezes them inward, so the inner layers lose the tension they were wound with, sometimes going slack and wavy. Programmed tension (higher inside, lower outside) and staged winding with partial cures keep the tension where it is needed.
Predict · at 0:36 in the video
After a thick wall is wound at constant tension, which plies have lost the most: the inner ones, or the outer?
The inner ones. They've been squeezed by every ply that came after them. The last ply on the outside keeps nearly all of its tension.
This course is our own. These books go deeper.
- Composite Filament Winding, S. T. Peters (ed.), ASM International, 2011
- Filament Winding: a Unified Approach, S. Koussios, Delft University Press, 2004
Simulations in this lesson are our own. Where a number rests on an assumption, the video marks it with an asterisk and says where it comes from.
