January 2014 – The hull of Sonabia 2 was already shaped with 10mm plywood, but the composition of the remaining layers had to be determined. We were skeptical about the architect´s proposal.
Thus we conducted impact testing on different combinations of layers, comparing to reference materials, aluminium, plywood, fiberglass epoxy…
We destroyed a lot of samples to determine an adequate composition of layers.
Warning. Before watching this video, keep in mind that impact resistance is only ONE factor among others for the choice of hull material.
Weight, stiffness, flexural strength, mechanical fatigue resistance, surface hardness, ease of repair are equally important.