1. Chair of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, D-44227 Dortmund, Germany (Corresponding author), e-mail: jochen.tenkamp@tu-dortmund.de, https://orcid.org/0000-0002-4804-6134
2. Diondo GmbH, Ruhrallee 14, 45525 Hattingen, Germany
3. Chair of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, D-44227 Dortmund, Germany