The Sceince of a Board (Core1)
Before reading this remeber all information might change with differant board design. Im a student that wrote this for a class not in the industry. If any of this information is incorrect and you can prove it tell me and ill do my best to improve it. Also anyone is buying a board keep some of this information in mind.
Snowboards consist of many materials that produce a stable and safe riding surface. It is important for manufactures to analyze and test the materials to ensure that the snowboard performs effectively and safely.
There are three basic constructions when producing snowboards they include cap, rim, and laminated constructions. Cap construction is when the top material covers the deck and the side walls of the snowboard. Cap snowboards get their strength from their arched edge. Rim construction is when polyurethane is injected around the wood core. Laminated boards are the most common. Laminated snowboards consist of sheets of materials stacked and glued together. (Snowboarding, 1999)
The core of a snowboard can be made of foam, wood, or microcell. The core of the snowboard affects flexibility and weight. Wood cores are the traditional cores for snowboards. Wood makes a good core because it dampens vibration. Wood’s anistrophic characteristics transmit the vibration along the length of the snowboard, so it decreases the ability of snow to stick to the bottom, and improves the glide (Snowboarding, 1999). Poplar or aspen are the woods of choice (Identity, 1999).
Foam cores are usually made of polyurethane. Good manufacturers produce polyurethane core snowboards that are just as durable as wood core snowboards but are lighter and do not compress. A sign of a good snowboard is one that has the core molded to the heart of the snowboard (Snowboarding, 1999). Some companies inject the foam between the topsheet and base material to form a core. These snowboards lack chamber and sometimes have pockets in them which lead to major system failure in the snowboards operation (Rossignol, 1999).
Rossignol produces a microcell core. The material Rossignol uses is a composite material. Rossignol claims their material provides constant flex no matter what the weather and dampens vibration (Rossignol, 1999).
Some boards have reinforced cores of metal, carbon fibers, kevlar, or fiberglass. Metal and fiberglass are used around the core of the snowboard. There are three reasons why fiberglass has become so popular in the snowboard industry. Fiberglass can easily be taken from a liquid state and made into strong fibers, is readily available to be made into glass reinforced plastic, and is very strong when imbedded into a matrix (Callister, 1997). Secondly fiberglass fibers in a matrix provide high fracture toughness. The third reason for the popularity of fiberglass is that the matrix separates the fibers to prevent the formation of little cracks which can run from fiber to fiber (Callister, 1997). Fibers in a matrix are also protected from surface, chemical, and environmental damage.
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By:
jrgjay
11/26/2000
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1600
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