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Multi-Material Properties via Multi-Field Processing on a Single Constituent Set

通过对单一成分集进行多场处理获得多材料属性

基本信息

批准号：
1762188
负责人：
Paris von Lockette
金额：
$ 49.67万
依托单位：
Pennsylvania State Univ University Park
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2023-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1762188&HistoricalAwards=false
关键词：
Multi Material Properties via Field

项目摘要

This grant will support research that will contribute new knowledge enabling the processing of polymer matrix composites with controlled heterogenous architectures that possess spatially varying mechanical and electronic/magnetic properties throughout the structure. The work extends the range of materials and structures accessible via additive processing techniques promoting the progress of science and advancing national prosperity. Almost all modern materials consist of a mixture or composite of materials which can act synergistically to produce interesting and useful properties which do not exist in any of the constituents. The research looks to the simplification of these additive processing techniques by applying external electrical and magnetic fields during the manufacturing process that leads to a spontaneous internal ordering of the two phases. While state-of-the-art multi-material additive manufacturing utilizes complex machinery and separate reservoirs for each material, this process would simplify manufacturing by fabricating parts with a range of material properties from a single material reservoir. Such processing has the capacity to revolutionize additive manufacturing by fabricating fully functioning devices through the control of the micro-architecture of the composites and hence their material properties. The work will seek out material and processing condition pairings that can achieve dichotomous properties, allowing the source material to produce materials that are stiff or compliant, magnetic or non-magnetic, conducting or insulating, etc. as needed locally during component fabrication. For example, instead of needing conducting metals surrounded by insulating polymer to fabricate parts with integrated wiring, this work will determine specific processing techniques to produce locally conductive and insulating regions within the part from the single material reservoir. Structured polymer matrix composites which are critical to a wide range of industries including aerospace, automotive, and healthcare developed through additive manufacturing would simply product development and open new application areas benefiting the U.S. economy and society. The outreach and educational components of the work will help broaden participation of underrepresented groups in research and positively impact engineering education in an emerging field. The goal of this research is to experimentally and theoretically study and quantify the ability of uniform and non-uniform electromagnetic fields and their gradients to develop micro-architectures in polymer matrix composites that have not been achieved using traditional uniform and single field processing. An electromagnetically assisted manufacturing process can provide a viable, lower-cost route to multi-material properties by reducing the complexity of these manufacturing systems down to a set of process variables that lead to desired properties. Externally applied electric and magnetic fields act orthogonally on the embedded barium hexaferrite particles within the uncured composite due to the particles' planar shape and crystallographic c-axis magnetization, allowing multi-axis control of particle alignments. Furthermore, externally induced dielectrophoretic and magnetophoretic particle-particle interactions allow control of the arrangement of aggregates of particles, providing a second hierarchical level of control. While dielectrophoresis and magnetophoresis are well known phenomena, this research will provide new knowledge of how regulated interactions of both fields with anisotropic particles can be used to develop micro-architectures that produce extremum dielectric, magnetic, and mechanical properties. The research team will perform computational multi-physics simulations of the electromagnetic field processing to predict resulting micro-architectures. Finite element modeling of the resulting micro-architectures will then provide estimates of resulting material properties. Experimental fabrication of these composites using predicted process variables, combined with an array of electromagnetic and mechanical characterization, will be used to refine simulations and to direct iterative experimental and computational trials, closing the loop with a multi-level Monto-Carlo optimization scheme. Results of this work will provide data on the process parameter, constituent, effective property design space that others may use to fabricate materials with tailored properties in a general electromagnetic processing context.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该补助金将支持研究，这将有助于新的知识，使聚合物基复合材料的加工具有受控的异质结构，具有空间变化的机械和电子/磁性能的整个结构。这项工作扩展了通过增材加工技术可获得的材料和结构的范围，促进了科学的进步和国家的繁荣。几乎所有的现代材料都由多种材料的混合物或复合物组成，这些材料可以协同作用，产生任何成分都不存在的有趣和有用的特性。该研究着眼于通过在制造过程中施加外部电场和磁场来简化这些增材加工技术，从而导致两相的自发内部有序化。虽然最先进的多材料增材制造利用复杂的机械和每种材料的单独储存器，但该过程将通过从单个材料储存器制造具有一系列材料特性的部件来简化制造。这种加工有能力通过控制复合材料的微结构及其材料特性来制造功能齐全的设备，从而彻底改变增材制造。这项工作将寻找可以实现二分特性的材料和加工条件配对，允许源材料在部件制造期间根据局部需要生产刚性或顺应性，磁性或非磁性，导电或绝缘等材料。例如，不需要绝缘聚合物包围的导电金属来制造具有集成布线的部件，这项工作将确定特定的处理技术，以从单一材料储存器中在部件内产生局部导电和绝缘区域。通过增材制造开发的结构化聚合物基复合材料对航空航天、汽车和医疗保健等广泛行业至关重要，它将简化产品开发并开辟新的应用领域，使美国经济和社会受益。这项工作的推广和教育部分将有助于扩大代表性不足的群体在研究中的参与，并对新兴领域的工程教育产生积极影响。本研究的目标是从实验和理论上研究和量化均匀和非均匀电磁场及其梯度在聚合物基复合材料中开发微结构的能力，这些微结构是使用传统的均匀和单场处理无法实现的。电磁辅助制造过程可以通过将这些制造系统的复杂性降低到导致期望特性的一组过程变量来提供可行的、低成本的多材料特性路线。由于颗粒的平面形状和晶体学c轴磁化，外部施加的电场和磁场正交地作用于未固化复合材料内的嵌入的钡六角铁氧体颗粒，从而允许颗粒排列的多轴控制。此外，外部诱导的介电泳和磁泳颗粒-颗粒相互作用允许控制颗粒聚集体的排列，提供第二层次的控制。虽然介电电泳和磁泳是众所周知的现象，但这项研究将提供有关这两个领域与各向异性颗粒的相互作用如何被用于开发产生极值介电，磁性和机械性能的微架构的新知识。研究团队将对电磁场处理进行计算多物理模拟，以预测产生的微架构。所得微结构的有限元建模然后将提供所得材料性质的估计。这些复合材料的实验制造使用预测的工艺变量，结合一系列的电磁和机械特性，将用于完善模拟和指导迭代实验和计算试验，关闭循环与多级蒙特卡洛优化方案。这项工作的结果将提供数据的过程参数，成分，有效的属性设计空间，其他人可以用来制造材料与定制的性能，在一般的电磁加工context.This奖项反映了NSF的法定使命，并已被认为是值得通过评估使用基金会的智力价值和更广泛的影响审查标准的支持。

项目成果

期刊论文数量（8）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

A microstructure-based approach to modeling electrostriction that accounts for variability in spatial locations of domains

一种基于微结构的电致伸缩建模方法，可解释域空间位置的变化

DOI：
10.1016/j.jmps.2018.09.024
发表时间：
2019
期刊：
Journal of the Mechanics and Physics of Solids
影响因子：
5.3
作者：
Erol, Anil;Ahmed, Saad;Ounaies, Zoubeida;von Lockette, Paris
通讯作者：
von Lockette, Paris

Characterization and Quantification of Hierarchical Particle Microstructures in External Field-Processed Composites

外部现场处理复合材料中分层颗粒微观结构的表征和量化

DOI：
10.1115/smasis2021-68127
发表时间：
2021
期刊：
Adaptive Structures and Intelligent Systems
影响因子：
0
作者：
Papula, Dashiell;Ounaies, Zoubeida;von Lockette, Paris;Widdowson, Denise;Erol, Anil;Masud, Abdulla
通讯作者：
Masud, Abdulla

Towards complex microarchitectural nanocomposites using non-uniform multi-field processing

使用非均匀多场处理实现复杂的微结构纳米复合材料