SANDIA REPORT SAND2019-14173 Printed November 2019 Optimized Carbon Fiber Composites in Wind Turbine Blade Design Brandon L. Ennis, Christopher L. Kelley, Brian T. Naughton Sandia National Laboratories Robert E. Norris, Sujit Das, Dominic Lee Oak Ridge National Laboratory David A. Miller Montana State University Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 94550