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A composite sandwich is merely the signing up with of a number of various materials to form a structure. In a very real sense a normal surf board is a sandwich comprised of foam and fiberglass, held together by polyester resin. One of the greatest problems with this type of building is that it is not extremely durable. If you have ever owned a surf design wakesurf board produced by doing this you understand that it gets heel dents practically after the very first flight. Now, a real composite sandwich with several density foam would be comprised of a low density EPS foam core, a layer of lightweight fiberglass, a layer of high density foam then a final layer of much heavier weight fiberglass all laminated with epoxy resin.

The greater density foam skin does a couple of things, it avoids most heel damages and dings. This foam remains in best site here the area of 5 pound density, which is thought about structural, whereas a lot of browse design wakesurf boards utilize a 2 to 3 pound density foam which tends to dent under pressure, such as when they are ridden. Also, as talked about below, it separates the fiberglass layers.

This composite sandwich also has more layers of fiberglass, which is what makes any surfboard strong. The most common lamination schedule is one layer of fiberglass on the bottom and two on the top. The composite sandwich will have, as a minimum, 2 layers leading and bottom. This additional fiberglass gives the composite sandwich superior strength.

Without belaboring the math involved, the tightness of any composite beam is identified by the range in between the confrontings. That is to state, in describing a wakesurf board, the thicker stated board is, the stiffer it will be. Also, the stiffness boost is exponential. Increasing by a factor of 1 increases stiffness by an element of 4. In our wakesurf board the core of the board acts like the web of an I-beam and the fiberglass skin acts as the confrontings. The composite sandwich improves on this, by positioning a high density foam skin in between the two layers of fiberglass on the deck. On a normal surfstyle wakesurf board there is no range between the two layers, and so by increasing the range the stiffness is increased dramatically, as well as improving strength and damage resistance.