content_image/597947.jpg content_image/597948.jpg
<img src='content_image/597947.jpg'>

<img src='content_image/597948.jpg'>

material. Kevlar$^{®}$ is often used for military ballistic and body armor applications. It has a natural yellow color and is available as dry fabric and prepreg material. Bundles of aramid fibers are not sized by the number of fibers like carbon or fiberglass but by the weight. 

## Carbon/Graphite 

One of the first distinctions to be made among fibers is the difference between carbon and graphite fibers, although the terms are frequently used interchangeably. Carbon and graphite fibers are based on graphene (hexagonal) layer 

