Do High Tenacity Aramid Fibers (Twaron, Technora, Kevlar) Break Down?
There is a lot of discussion concerning aramid fiber (such as Kevlar) flex fatiguing over time. Most of the data available has been acquired through testing conducted for the sailing industry where a cord is excessively cycled through pulleys and blocks. The data shows that with time and cycling aramid fibers do break down. However, the level of cycling in sailing applications is far greater than of applications a climber or rescuer using aramid fibers for anchors might employ.
