FATIGUE 1 (IMAGE) Rice University Caption Rice University researchers found that cyclic loading of nanotube fibers leads to strain ratcheting that can eventually lead to the failure of the fiber. Credit Illustration by Nitant Gupta and Evgeni Penev/Yakobson Research Group Usage Restrictions NONE License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.