1. Professor, Composite Construction Laboratory, Swiss Federal Inst. of Technology Lausanne, BAT. BP, Station 16, CH-1015 Lausanne, Switzerland. E-mail: thomas.keller@epfl.ch
2. Ph.D. Candidate, Composite Construction Laboratory, Swiss Federal Inst. of Technology Lausanne, BAT. BP, Station 16, CH-1015 Lausanne, Switzerland. E-mail: yu.bai@epfl.ch
3. Composite Construction Laboratory, Swiss Federal Inst. of Technology Lausanne, BAT. BP, Station 16, CH-1015 Lausanne, Switzerland. E-mail: till.vallée@epfl.ch