Natural fibers are returning, then, but there is a problem: a
is the mentality of our engineers, who are used to design materials with
non-natural properties, and then (hopefully) consistent, uniform, and
with simple geometries (straight, because we so desired).
Even when using natural materials such as wood, it is formed in
axles, beams and so on.
In fact, the simple geometry does not exist in nature. Nature uses
complex shapes, especially spirals or even more complex (the double helix of DNA is a good example).
Of course, we can pretend nothing happened and design materials, such as fiber-resin composites,
as we have always done: for example here is an example of a next test unidirectional (fiber in the same direction) kenaf fiber , a type of hibiscus, and epoxy resin. It looks very much like a man-made material such as fiberglass, ma in realtà, pensando alla struttura cellulare delle fibre vegetali, la forzatura è evidente.
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