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国家自然科学基金重大项目“层状电磁复合材料的界面结构与力学行为”采取力学与材料学相结合的手段,抓住含界面/尺度效应的本构关系与设计方法、动力学特性以及多场耦合的失效机理与破坏准则这3个关键科学问题,对层状电磁复合材料进行了系统而深入的研究。项目组经过4年努力,在力-电-磁耦合理论和方法、材料多场耦合性能表征方法和仪器研制、新材料与新结构的设计和制备三个方面取得了一系列创新性成果。提出了双非线性磁电耦合本构理论和多场耦合表面理论,研制了多场耦合微纳米压痕仪和鼓泡仪,设计制备了新型磁弯矩效应的磁电复合材料和低噪声弱磁传感器。本项目的研究,对促进我国电磁功能材料及器件的发展具有重大意义。
National Natural Science Foundation of China’s major project “layered electromagnetic composite material interface structure and mechanical behavior ” to take the combination of mechanics and materials science means, to grasp the interface / scale effect of the constitutive relations and design methods, dynamic characteristics and Multi-field coupled failure mechanism and failure criterion of these three key scientific issues, the layered electromagnetic composite materials conducted a systematic and in-depth study. After four years of hard work, the project team has made a series of innovative achievements in three aspects: the theory and method of force-electromagnetism coupling, the method and equipment for characterizing multi-field coupling performance of materials, the design and preparation of new materials and new structures. A dual nonlinear magneto-electric coupling constitutive theory and a multi-field coupled surface theory are proposed. Multi-field coupled micro-nanoindentation and bubbling apparatus are developed. A new type of magnetoelectric composite with magnetic moment effect and low noise Magnetic sensor. The research of this project is of great significance to the development of electromagnetic functional materials and devices in our country.