Microcracks in Ceramic Composites (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption These CT scans showing the formation of microcracks in ceramic composites under applied tensile loads at 1,750 degrees Celsius were obtained at Berkeley Lab's Advanced Light Source through the use of a unique mechanical testing rig. Credit Courtesy of Robert Ritchie, Berkeley Lab 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.