Re: Strenght and flexibility
Posted: Sun Feb 17, 2013 7:44 pm
Ah ok so you are going to use a structural wood rather than sandwich types. Could be good thenBWD wrote:Skin only takes all the load when it's way stiffer than the core.
I'm talking about building something besides a standard composite I-beam...
The wood core can control some aspects of flex (how much, damping etc...), while unidirectional fibers near the neutral axis add some stiffness and reflex but are away from impact, point loads and supported against buckling, the primary failure mode for kiteboards.
I don't envision this idea mainly for light foam or balsa but maybe it could be good with spruce, larch, fir, cedar poplar etc. It could apply with various fibers. Carbon for example, likes to be unkinked and well supported, and most efficiently used used in flat unidirectional sheets and tows...
I would try this with cedar or paulownia with a light bias e glass on the outside, and E S or CF unis at the core.
Just an idea...