Surface Treatment Strategies and Their Impact on the Material Behavior and Interfacial Adhesion Strength of Shape Memory Alloy NiTi Wire Integrated in Glass Fiber-Reinforced Polymer Laminate Structures
Saravanan Palaniyappan,
Harshan Kalenahalli Ramesha,
Maik Trautmann,
Steven Quirin,
Tobias Heib,
Hans-Georg Herrmann,
Guntram Wagner
Affiliations
Saravanan Palaniyappan
Group of Composites and Material Compounds (PVW), Institute of Materials Science and Engineering (IWW), Chemnitz University of Technology, 09125 Chemnitz, Germany
Harshan Kalenahalli Ramesha
Group of Composites and Material Compounds (PVW), Institute of Materials Science and Engineering (IWW), Chemnitz University of Technology, 09125 Chemnitz, Germany
Maik Trautmann
Group of Composites and Material Compounds (PVW), Institute of Materials Science and Engineering (IWW), Chemnitz University of Technology, 09125 Chemnitz, Germany
Steven Quirin
Chair for Lightweight Systems, Saarland University, 66123 Saarbrücken, Germany
Tobias Heib
Chair for Lightweight Systems, Saarland University, 66123 Saarbrücken, Germany
Hans-Georg Herrmann
Chair for Lightweight Systems, Saarland University, 66123 Saarbrücken, Germany
Guntram Wagner
Group of Composites and Material Compounds (PVW), Institute of Materials Science and Engineering (IWW), Chemnitz University of Technology, 09125 Chemnitz, Germany
Over the past few decades, there has been a growing trend in designing multifunctional materials and integrating various functions into a single component structure without defects. This research addresses the contemporary demand for integrating multiple functions seamlessly into thermoplastic laminate structures. Focusing on NiTi-based shape memory alloys (SMAs), renowned for their potential in introducing functionalities like strain measurement and shape change, this study explores diverse surface treatments for SMA wires. Techniques such as thermal oxidation, plasma treatment, chemical activation, silanization, and adhesion promoter coatings are investigated. The integration of NiTi SMA into Glass Fiber-Reinforced Polymer (GFRP) laminates is pursued to enable multifunctional properties. The primary objective is to evaluate the influence of these surface treatments on surface characteristics, including roughness, phase changes, and mechanical properties. Microstructural, analytical, and in situ mechanical characterizations are conducted on both raw and treated SMA wires. The subsequent incorporation of SMA wires after characterization into GFRP laminates, utilizing hot-press technology, allows for the determination of interfacial adhesion strength through pull-out tensile tests.
