EAGER: Multifunctional Cellular Metacomposite: Low Frequency Noise Absorber and Energy Harvesting

这个迫切的项目的目标是开发一种新型的多功能细胞超复合材料，通过微结构设计实现细胞复合材料和超材料响应之间的相互作用。作为一种优良的轻质、薄而坚固的结构材料，复合材料将同时起到衰减低频噪声(LFN)和低频振动(LFV)的作用，并通过压电效应将有害的LFN和LFV能量转化为可用电能。该研究将为声学超材料的评价和微结构机理的理解提供理论基础。如果成功，本研究的理论和方法将引导工业工程的应用。所提出的设计还有望加速用于能量收集的声学多功能超复合材料，这是一种廉价、清洁和非常高效的方法。超材料的实际工程应用还处于概念阶段，还没有开发出真正的声学细胞超复合材料。这是一项风险很高，但可能影响很大的研究。本研究的主题是声学超材料和新型功能材料设计。该研究将为机械系统的低频减振、低频噪声滤除、绿色能量采集等设计提供新的范式。这项研究允许学生将分析、数值和实验方法整合到他们的教育和研究计划中，这将对受训人员的独立研究生涯做出重大贡献。这项工作将对拉丁美洲和加勒比地区及周边地区产生深远和持久的教育和推广效益。

The objective of this EAGER project is to develop a novel multifunctional cellular metacomposite with interplay between a cellular composite and metamaterial response through microstructure design. As a superior lightweight, thin and strong structural material, the metacomposite will simultaneously serve to attenuate low frequency noise (LFN) and low frequency vibration (LFV), and convert hazardous LFN and LFV energy into usable electric energy through the piezoelectric effect. The study will provide a theoretical foundation to evaluate acoustic metamaterials and understand microstructure mechanism. If successful, the theory and approaches in this research will lead to industrial engineering applications. The proposed design also promises to accelerate acoustic multifunctional metacomposites for energy harvesting, which is cheap, clean and very efficient. Practical engineering applications of metamaterials are still in the conceptual stage and no real acoustic cellular metacomposite have been developed. This is a high-risk, but potentially high impact study. The subject of this research is of fundamental interest to acoustic metamaterials and novel functional material design. This research will provide a new paradigm for design of mechanical systems such as low-frequency vibration suppression, low-frequency noise filter and green energy harvesting. The research allows students to integrate analytical, numerical and experimental approaches into their education and research programs, which will significantly contribute to the independent research career of the trainees. This work will have deep and lasting educational and outreach benefits to UALR and the surrounding region.