We are sort of in the middle of a few projects and wanted to share where we are with those and then also share a process we are intrigued with.
The first is a little carbon wrapped skim project. You’ll remember we started that some time again and we are hoping to get that finalized this week and ready to test out. We left the board outside to cure last evening and just sort of forgot that Fall is in the air! It got really cold last night and there was some dew on the surface of our project this morning! We were heart broken for a moment because that can ruin the cure cycle of epoxy, but lucky for us, it was cured before the dew hit!
The first thing we did was run a hand over the surface to see if was tacky! Right? If it’s ruined might as well test it such that it would wind up a MESS and RUINED!
The second project is related to a process we want to test.
This is a little far out there, but that’s what we do here at Flyboy! We understand there is a place for traditional materials and methodologies, but just not here.
So this started with a tour of a friends workshop that is involved in the defense industry and they create composite structures that are designed to protect American service men and women. One of the things they do is create blast mitigation composite structures. No doubt you’re aware of IED’s used against American soldiers in the middle east. In short one of the products is a blast tolerant composite sandwich panel.
We want to share a few demonstration videos that portray the use of an elastomer called Polyurea. We won’t delve into the technical aspects because some yahoo will start playing some stupid-ass semantics game and confuse the shit out of everyone. The stuff is used, commercially as a garage floor covering. It’s very tough stuff.
So here is one advertisement video that shows all sorts of stuff shot at and blown up! Comparing Polyurea coated items to non-coated items.
Right? Gotta love shooting things with a 12 gauge!
Ok, this is a little more subtle, but gives you an idea of how the application of Polyurea can toughen objects.
Now we need to be just crazy-ass careful here because the semantics nazi’s will run around saying that WE SAID, paint your board with Polyurea and you can slam it with a sledge hammer all day long. We are NOT saying that (duely noted on August 27, 2014 at 4:30 am). That said, however, we have to wonder if the ability of Polyurea to help spread loads can’t be included in a wakesurf board composite sandwich.
But our buddy creates this blast mitigation composite structure that in fact uses Polyurea. Here is a link to a study that sort of explains the basic concept.
To summarize, what the study found was that a very thin layer of Polyurea close to the core of the composite sandwich used as an “interlayer” between the facing and core dramatically increased the ability of the sandwich to deflect blast loads.
That got us thinking about how we use wakesurf boards. We are always focused on two contact points on the deck that correspond to out feet, or thereabouts and on the bottom where we, or at least some of us, land from aerials and hit the wake. We started wondering if a simple coating of Polyurea, underneath a skin could assist in the deflection of loads in a wakesurf board?
Who knows?! But we’ll give it a test, as you can buy Polyurea coatings from most paint supply stores. We’re going to do some testing to see how it reacts with EPS foam and then also Divinycell. Imagine if a simple layer of the stuff could increase damage tolerance to the point you could hit your board with a hammer?! Ok, that will never happen, but maybe there is a simple and inexpensive way to use a paint like substance to coat the core and increase the toughness by some measurable factor?
Anyway, you’re up-to-date with the Flyboy Wakesurf labs! Thanks so much for following along we really appreciate it.
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