在过去的几十年里,设计多功能材料和将各种功能集成到没有缺陷的单个组件结构中已经有了增长的趋势。这项研究解决了将多种功能无缝集成到热塑性层压结构中的当代需求。专注于NiTi基形状记忆合金(SMA),以其在引入应变测量和形状变化等功能方面的潜力而闻名,这项研究探索了SMA线的各种表面处理。技术,如热氧化,等离子体处理,化学活化,硅烷化,和附着力促进剂涂层进行了研究。追求将NiTiSMA集成到玻璃纤维增强聚合物(GFRP)层压板中以实现多功能性能。主要目的是评估这些表面处理对表面特性的影响,包括粗糙度,相位变化,和机械性能。微观结构,分析,并对原始和处理后的SMA线进行原位力学表征。随后在表征后将SMA线合并到GFRP层压板中,利用热压技术,允许通过拉出拉伸试验确定界面粘合强度。
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.