Multifunctional material design has witnessed a growing trend in recent decades, emphasizing the seamless integration of diverse functionalities within a single component structure. This trend has become particularly significant in the context of thermoplastic based Fiber Metal Laminate (FML) structures. In response to the increasing demand for advanced functionalities in FMLs, it has become imperative to investigate the feasibility and challenges associated with the incorporation of additional functions. In this study, the potential of Nickel Titanium (NiTi) based shape memory alloy (SMA) wires integrated into FML to introduce versatile functionalities, including strain measurement, shape change, and energy absorption, through reversible solid-solid phase transformations are explored. To fully exploit the strain-sensing capabilities of SMAs for structural health monitoring of FMLs, achieving a high level of integration with minimal or no artifacts is crucial. Consequently, this research focuses on the implementation of various surface modifications on pseudoelastic SMA wires with 250 and 100 µm in diameter, encompassing thermal, chemical, mechanical, and plasma-based treatments. These treatments are designed to address the surface characteristics that influence the interfacial bonding properties between SMA and glass fiber-reinforced polyamide 6. The impact of these treatment strategies is systematically evaluated by examining surface roughness, as well as intrinsic material properties such as internal stress, phase change behavior, and stress-strain behavior. This assessment is carried out through a comprehensive suite of microstructural, analytical, and mechanical characterization techniques applied to both as-received (non-treated) and surface-treated SMA wires. To facilitate integration, hot press technology is employed, accompanied by a dedicated mold design. The integrated SMA wires are subsequently subjected to single-wire pull-out tensile tests to assess their interfacial strength. The pull-out behavior of both non-treated and various surface treated SMA wires is rigorously analyzed and correlated with their pre-evaluated surface characteristics. The results of this study provide valuable insights into the feasibility of integrating reversible strain sensing functionalities into thermoplastic based FML structures, offering a pathway for enhancing their structural health monitoring capabilities.