Fracture test (IMAGE) DOE/Sandia National Laboratories Caption Sandia National Laboratories researchers in the Mechanics of Materials department utilize the new fracture testing hangers for traditional interlaminar composite fracture testing as well as advanced hybrid composite laminates, as shown here. Credit Photo courtesy of Sandia National Laboratories Usage Restrictions None License Licensed 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.