CAREER: Intralayer Contact Between Two Dissimilar Inhomogeneous Orthotropic Materials

职业：两种不同的非均匀正交各向异性材料之间的层内接触

• 批准号: 9982023
• 负责人: Assimina Pelegri
• 金额: $ 21万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-01 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9982023&HistoricalAwards=false
• 关键词: CAREER; Intralayer; Contact; Between; Two

The goal of the research under this CAREER award is to develop a robust methodology to predict dynamic damage evolution in the interfaces of laminated composites of dissimilar inhomogeneous orthotropic materials. The approach is to integrate the synergistic effects of contact zone and intralayer kinking in an interfacial damage predictive model for inhomogeneous bimaterials. In particular, the objectives are to: 1) investigate the parameters of contact zone formation, 2) study the effect of contact zones in the kinking of delaminations, 3) assess the connection (if any) and the effect of damage accumulation in (1) and (2), and 4) to predict deviation, propagation, or arrest of delaminations based on the findings from (1) and (3). The results are expected to lead to a significantly improved quantitative assessment of the energy release rate and fracture toughness of a damaged composite structure and to better design methods to avoid specific modes of damage.The educational plan has three specific goals: 1) to increase the involvement of women in engineering, 2) to increase awareness of opportunities in science and engineering of high-school students (Technical Youth Program), and 3) to modernize the mechanical engineering laboratory and course curriculum. In an effort to increase the gender diversity, the PI will collaborate with Douglass College of Women in initiating high school outreach programs. During these programs students will have the opportunity to visit the Rutgers University School of Engineering for hands on demonstrations, small group sessions with female scientists and engineers, and interaction with female guest visitors from industry. In the curriculum development plan, the learning process is promoted via visualization of concepts and hands-on practice. A unified educational/research approach will be utilized in order to infiltrate the knowledge and expertise gained from the conducted research to the classroom.

该CAREER奖下的研究目标是开发一种稳健的方法来预测不同非均匀正交各向异性材料层合复合材料界面的动态损伤演化。 该方法是集成的接触区和层内扭结的非均匀双材料的界面损伤预测模型的协同效应。 具体而言，目标是：1）研究接触区形成的参数，2）研究接触区在分层扭结中的影响，3）评估（1）和（2）中的连接（如有）和损伤累积的影响，以及4）根据（1）和（3）的结果预测分层的偏离、传播或停止。 预计研究结果将大大改进对受损复合材料结构的能量释放率和断裂韧性的定量评估，并改进设计方法，以避免特定的损坏模式。1）增加妇女参与工程，2）提高高中学生对科学和工程机会的认识（技术青年方案），3）使机械工程实验室和课程现代化。 为了增加性别多样性，PI将与道格拉斯女子学院合作，启动高中外展计划。 在这些课程中，学生将有机会参观罗格斯大学工程学院，进行动手演示，与女科学家和工程师进行小组讨论，并与来自行业的女性访客进行互动。 在课程开发计划中，通过概念的可视化和动手实践来促进学习过程。 将采用统一的教育/研究方法，以便将从所进行的研究中获得的知识和专门知识渗透到课堂。