So as some of you remember a couple of months ago I made up some sample layups to break. This is the original link:
http://www.wakeworld.com/MB/Discus/messages/65919/545968.html So we have tried two different loading scenerios. Both of them had a 1/2" of soft silicone on them. This seems to even out the load a bit and the thought was to simulate what the water is doing to the bottom of the board. Neither of the samples failed correctly though. The particular layup we are testing here I know on the water either the top skin fails in tension or the bottom skin fails in buckling. Where what we see in both of these videos is the core shearing away from the skin. So at this point I am trying to figure out what to change to get it closer to reality. We have posted the videos at the bottom of our engineering page. Give them a few minutes to download. One is like 7 megs and the other is 12.
http://www.cdifins.com/Engineering2004.html Skiing made me board,
Lyle
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