1. Department of Automotive Engineering, Clemson University, Greenville, South Carolina29607, United States
2. Clemson Composites Center, Clemson University, Greenville, South Carolina29607, United States
3. Clemson Nanomaterials Institute, Clemson University, Anderson, South Carolina29625, United States
4. Department of Physics and Astronomy, Clemson University, Clemson, South Carolina29631, United States
5. USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin53726, United States
6. Department of Mechanical Engineering, Clemson University, Clemson, South Carolina29634, United States
7. Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina29634, United States