244 Int. J. Automotive Composites, Vol. 2, Nos. 3/4, 2016 Copyright © 2016 Inderscience Enterprises Ltd. Shear edge tests: a benchmark in investigating the influence of different surface pretreatment methods on the shear stress of intrinsically manufactured metal-CFRP hybrids Carolin Zinn* and Mirko Schaper Department of Materials Science (LWK), Paderborn University, Warburger Strasse 100, 33098 Paderborn, Germany Email: zinn@lwk.upb.de Email: schaper@lwk.upb.de *Corresponding author Jonathan Serna Gonzalez and Dieter Meiners Institute of Polymer Materials and Plastics Engineering (PuK), Clausthal University of Technology, Agricolastrasse 6, 38678 Clausthal, Germany Email: jonathan.serna@tu-clausthal.de Email: dieter.meiners@tu-clausthal.de Zheng Wang and Thomas Troester Chair of Automotive Lightweight Design (LiA), Paderborn University, Warburger Strasse 100, 33098 Paderborn, Germany Email: zheng.wang@uni-paderborn.de Email: thomas.troester@uni-paderborn.de Florentin Pottmeyer and Kay André Weidenmann Karlsruhe Institute of Technology, Institute for Applied Materials (IAM-WK), Engelbert-Arnold-Strasse 4, 76131 Karlsruhe, Germany Email: Florentin.Pottmeyer@kit.edu Email: Kay.Weidenmann@kit.edu