High-Strength High-Strain Structures Using Ceramic Cellular Contact-Aided Compliant Mechanisms (C3M)

使用陶瓷蜂窝接触辅助柔顺机构 (C3M) 的高强度高应变结构

• 批准号: 0900368
• 负责人: Mary Frecker
• 金额: $ 62.26万
• 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: 2009
• 资助国家: 美国
• 起止时间: 2009-05-01 至 2013-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0900368&HistoricalAwards=false
• 关键词: Strength; Strain; Structures; Using; Ceramic

High-Strength High-Strain Structures Using Ceramic Cellular Contact-Aided Compliant Mechanisms (C3M)Cellular Contact-Aided Compliant Mechanisms (C3M) are made up of arrays of cells that come into contact with themselves as the structure deforms. This self-contact provides stress relief. That is, the structure can be deformed to a greater extent before failure than a similar cellular structure without contact. In this research project methods for design and fabrication of high-strength high-strain ceramic C3M will be developed. Ceramic materials are of interest because of their high strength and potential high temperature capability. Ceramic C3M are capable of ultimate strains that are at least an order of magnitude higher than the ultimate strain of the bulk ceramic material. The fabrication method that will be developed is based on a novel ceramic fabrication method known as lost mold, rapid infiltration forming (LM-RIF). This process uses ceramic material comprised of nanoparticles which provide high strength and excellent feature size resolution. In addition to the design and fabrication efforts, prototype ceramic C3M devices will be tested. The project will benefit society by creating new and innovative science leading to applications ranging from morphing aircraft to damage tolerant composite armor. The research and education will be integrated through outreach to prospective students, particularly those from underrepresented groups. The results of the research project will be used to help recruit students from underrepresented groups into engineering by supporting the activities of the Penn State Women in Engineering Program (WEP). Specifically, an interactive module for Meet the Machine, the Penn State WEP summer camp for high school girls, will be developed. This effort is expected to spark their interest in Engineering, and help to build the pipeline of future engineers.

使用陶瓷蜂窝接触辅助柔顺机构（C3 M）的高强度高应变结构蜂窝接触辅助柔顺机构（C3 M）由在结构变形时与自身接触的蜂窝阵列组成。 这种自我接触提供了压力缓解。 也就是说，与没有接触的类似蜂窝结构相比，该结构在失效之前可以变形到更大的程度。 在本研究计画中，将发展高强度高应变陶瓷C3 M的设计与制作方法。 陶瓷材料由于其高强度和潜在的高温性能而受到关注。 陶瓷C3 M的极限应变能够比块体陶瓷材料的极限应变高至少一个数量级。将开发的制造方法是基于一种新的陶瓷制造方法，称为消失模，快速渗透成形（LM-RIF）。 该工艺使用由纳米颗粒组成的陶瓷材料，其提供高强度和优异的特征尺寸分辨率。除了设计和制造的努力，原型陶瓷C3 M设备将进行测试。 该项目将通过创造新的创新科学来造福社会，从而导致从变形飞机到损伤容限复合装甲的应用。 研究和教育将通过对未来学生，特别是来自代表性不足群体的学生的外联活动进行整合。 该研究项目的结果将用于通过支持宾夕法尼亚州立大学妇女工程项目（WEP）的活动，帮助从代表性不足的群体中招募学生进入工程领域。 具体而言，将为宾州州立大学面向高中女生的WEP夏令营“Meet the Machine”开发一个互动模块。 这一努力有望激发他们对工程的兴趣，并有助于建立未来工程师的管道。