Magnetic-Field-Dependent Dynamic Mechanical Behavior of Carbon Nanotube Reinforced Magnetostrictive Nanocomposites: An Integrated Experimental and Modeling Study

磁致伸缩复合材料的磁力学行为是科学和工程学科研究人员和工程师非常感兴趣的问题。然而，基体较差的力学响应严重阻碍了其广泛应用。本课题旨在开发一种新型的碳纳米管增强磁致伸缩弹性体纳米复合材料。具体而言，提出了一种结合实验和多尺度模型的研究方法，以研究嵌入混合多壁碳纳米管和磁致伸缩微粒的磁致伸缩纳米复合材料的有效磁场依赖动态力学行为。本项目将重点研究磁致伸缩纳米复合材料的制备工艺和性能测试、多尺度建模以及涡流诱导的磁-力耦合。该项目是首次尝试结合纳米复合材料和磁致伸缩材料的优点来生产新型磁致伸缩纳米复合材料。这项工作的成功有望导致智能复合材料的发展取得重大进展，如自适应振动控制和用于民用基础设施监测的磁弹性传感器。此外，该项目还提供了进行跨学科研究和跨学科教育的机会。两名研究生将得到支持和培训，以开展研究的重要组成部分。将优先考虑少数族裔学生参与相关实验和演示。该项目的多学科性质将吸引和留住少数民族学生，并使他们接触到最先进的研究。

Magneto-mechanical behavior of magnetostrictive composites is of great interest to researchers and engineers in science and engineering disciplines. However, the inferior mechanical response of the matrix severely impedes their wide applications. The proposed research is aimed to develop a new type of magnetostrictive elastomer nanocomposites reinforced with carbon nanotubes. Specifically, a combined experimental and multi-scale modeling investigation is proposed to study the effective magnetic-field-dependent dynamic mechanical behavior of magnetostrictive nanocomposites embedded with mixed multi-walled carbon nanotubes and magnetostrictive microparticles. This project will focus on the fabrication process and property testing, multiscale modeling, and eddy current-induced magneto-mechanical coupling of magnetostrictive nanocomposites. This project is among the first attempts to combine the advantages of nanocomposites and magnetostrictive materials to produce novel magnetostrictive nanocomposites. The success of this work is expected to lead to significant advances in the development of smart composites with applications such as adaptive vibration control and magnetoelastic sensors for civil infrastructures monitoring. In addition, the project provides an opportunity for performing interdisciplinary research and cross-disciplinary education. Two graduate students will be supported and trained to carry out a significant component of the research. Priority will be given to underrepresented minority students in participation of related experiments and demonstrations. This multidisciplinary nature of the project will attract and retain minority students and expose them to the state-of-the-art research.