CAREER: Intralayer Contact Between Two Dissimilar Inhomogeneous Orthotropic Materials

CAREER奖下的研究目标是开发一种强大的方法来预测不同非均匀正交各向异性材料层压复合材料界面的动态损伤演变。该方法将接触区和层内扭结的协同效应整合到非均质双材料的界面损伤预测模型中。具体而言，目标是：1)调查接触区形成的参数，2)研究接触区在脱层扭结中的影响，3)评估(1)和（2)中的连接（如果有的话）和损伤积累的影响，以及4）根据(1)和(3)的结果预测脱层的偏差、传播或停止。研究结果有望显著改善对损伤复合材料结构的能量释放率和断裂韧性的定量评估，并提供更好的设计方法来避免特定的损伤模式。该教育计划有三个具体目标：1)增加女性在工程领域的参与，2)提高高中学生对科学和工程机会的认识（技术青年计划），以及3)使机械工程实验室和课程课程现代化。为了增加性别多样性，PI将与道格拉斯女子学院（Douglass College of Women）合作，发起高中拓展项目。在这些项目中，学生们将有机会参观罗格斯大学工程学院，参加动手演示，与女科学家和工程师进行小组讨论，并与来自工业界的女嘉宾进行互动。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上。

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.