Minimum invasive production-related SLS specimen manufacturing for interface characterization of hybrid materials made by RTM

  • Patrick HerganEmail author
  • Christoph Lechner
  • Ewald Fauster
  • Gerald Pilz
  • Ralf Schledjewski
Open Access


This work shows a new way of single lap shear specimen production for hybrid metal-composite materials, which can be used to characterize process-induced interface property variations. Due to this special procedure, the specimen manufacturing can be done production-related and with a homogenization of the thermal stresses occurring in the joint area of the hybrid at each specimen. The exemption process of the specimen is kept in a minimum invasive way, not affecting the interface in the tested zone. The influence of the metal surface structure specifically created by micro form milling as well as the influence of the curing temperature on the maximum shear strength of the interface, were investigated. Finally, the driving failure mechanisms were identified and described.


Hybrid metal-CFRP composites Interface characterization Single lap shear test Resin transfer molding Processing of composites 



Open access funding provided by Montanuniversität Leoben.


This work was supported by the Austrian Ministry for Transport, Innovation and Technology in the frame of the program “Produktion der Zukunft,” administered by the Austrian Research Promotion Agency under Grant [848666].

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest.


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Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Processing of Composites Group, Department Polymer Engineering and ScienceMontanuniversität LeobenLeobenAustria
  2. 2.Institute for Production Engineering and Laser TechnologyTU WienViennaAustria
  3. 3.Materials Science and Testing of Polymers, Department Polymer Engineering and ScienceMontanuniversität LeobenLeobenAustria

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