STTR Phase I: Advanced Materials for Blast and Ballistic Protection

这个小型企业技术转移(STTR)第一阶段项目将开发一种新型的轻质、多功能结构板，以最小的重量提高性能(强度、刚度、高冲击能量耗散、热管理)。这项工作考虑了一种设计和制造桁架芯夹层结构的新方法，包括离散销布置，允许桁架芯单元的独特拓扑布置，以增强力学和物理性能的组合。该计划将：(1)演示制造方法，(2)将机械性能与现有的夹层板概念进行比较，以及(3)为特定用途的面板设计开发性能图和计算协议。具体比较实心桁架夹芯板和空腹桁架夹芯板的设计。国际细胞材料公司和加州大学欧文分校的这项研究合作将扩大对优化面板设计的理解，促进更广泛的应用，并消除现有的多功能结构材料使用的拓扑限制。在允许复杂曲率的同时，可以自由定制不同的芯层厚度、芯层密度、材料组成和热机械响应，这将极大地增强/扩大夹层板在涉及高能冲击、弹道/爆炸缓解、热交换以及声和振动能量衰减的应用中的使用。典型的商业应用可能包括轻型航空航天结构、高效热交换器、轻型车辆装甲、航天器蒙皮结构、消能汽车保险杠/框架，以及高标准建筑的抗震或爆炸结构墙。其他更广泛的影响包括招聘和培训加强美国在先进材料和结构方面的领导地位所需的劳动力，以及增加代表不足的K-12和工程专业本科生的参与。该计划还将为关键的商业、民用和军事系统的先进材料表征、合成和集成提供基础设施。

This Small Business Technology Transfer (STTR) Phase I project will develop a new class of lightweight, multi-functional structural panels with improved performance (strength, stiffness, high impact energy dissipation, thermal management) at minimum weight. The proposed work considers a novel approach to the design and manufacture of truss core sandwich structures, involving discrete-pin placement allowing for a unique topological arrangement of truss core elements for enhanced combination of mechanical and physical properties. The program will: (1) demonstrate the fabrication approach, (2) compare mechanical performance with existing sandwich panel concepts, and (3) develop performance maps and computational protocols for application-specific panel design. Specific comparisons will be made between solid-truss and hollow-truss sandwich panel designs. This research partnership effort between Cellular Materials International and the University of California, Irvine will expand understanding of optimal panel design, promote expanded applications, and eliminate existing topological constraints on multi-functional structural materials usage. The freedom to tailor variable core thickness, core density, materials makeup, and thermo-mechanical response while allowing for complex curvature will highly enhance/broaden the use of sandwich panels in applications involving high energy impact, ballistic/blast mitigation, thermal exchange, and damping of sound and vibrational energy. Typical commercial applications may include lightweight aerospace structures, thermally efficient heat exchangers, lightweight vehicle armor, space vehicle skin structures, energy-dissipating automobile bumpers/frames, and earthquake- or blast-resistant structural walls for high profile buildings. Additional broader impacts include recruiting and training the workforce needed to enhance U.S. leadership in advanced materials and structures, and increasing participation of underrepresented K-12 and undergraduate students in engineering. This program also will enable the infrastructure for advanced materials characterization, synthesis and integration for critical commercial, civil and military systems.