Roland's homepage

My random knot in the Web

Additional close-up photos

The picture below on the left shows a close-up of the surface of a carbon fiber and epoxy resin laminate. On the right is the same surface after sanding. Sanding exposes the fibers in the laminate, creating lots of places where glue can seep between the fibers creating mechanical adhesion.

close-up of woven carbon-fiber epoxy laminate sanded carbon-fiber epoxy laminate

In the original picture of the sanded laminate you can almost distinguish the individual carbon fibers, which are about 5 μm in diameter.