1. LM Wind Power Blades, Composite Mechanics, Jupitervej 6, Kolding, Denmark
2. Department of Wind Energy, Section of Composites and Materials Mechanics, Technical University of Denmark, Risø Campus, Roskilde, Denmark
3. Center for Composite Materials, Department of Materials Science and Engineering, Department of Civil and Environmental Engineering, Department of Mechanical Engineering, University of Delaware, Newark, Delaware, USA