EAGER: SMA Z-Pinned SMP Cored Sandwich Structure for Self-Healing Impact Damage

“这项奖励是根据2009年美国复苏和再投资法案（公法111-5）资助的。”这个EAGER项目的目标是探索一种新的概念——形状记忆合金（SMA） z-钉夹三明治，该三明治具有基于网格强化形状记忆聚合物（SMP）的合成泡沫核心，用于自主、重复、高效地愈合冲击损伤。在本研究中，SMA z-pin将用于实现SMP泡沫芯的自主编程和横向约束。将进行以下操作：(1)选择兼容的SMA和SMP对，以实现设计的功能；(2)制造SMA z-钉混合智能夹芯板；(3)进行规划；(4)进行重复低应变率冲击试验和自愈试验；(5)确定残余强度和自愈效率。该项目将有助于路易斯安那州立大学（LSU）和南方大学（SU）将研究成果整合到教育、研究生指导、学生参与实验室实验和课程开发中。它将通过改革复合材料课程的教学大纲来加强研究和教育基础设施。一名研究生将直接参与这个项目。通过研讨会和课堂教学，让少数民族学生直接接触这项研究，将促进少数民族学生的机会。

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."The objective of this EAGER project is to explore a novel concept - shape memory alloy (SMA) z-pinned sandwich with an integrated, grid stiffened shape memory polymer (SMP) based syntactic foam core for healing impact damage autonomously, repeatedly, and efficiently. In this study, SMA z-pins will be used to achieve autonomous programming and transverse confinement of the SMP foam core. The following will be conducted: (1) select a compatible SMA and SMP pair so that the designed functionality can be achieved; (2) fabricate SMA z-pinned hybrid smart sandwich panel; (3) conduct programming; (4) conduct repeated low-strain rate impact test and self-healing test; and (5) determine the residual strength and self-healing efficiency. This project will contribute to the integration of research results into education, graduate student mentoring, involvement of student in lab experiments and curriculum development at both Louisiana State University (LSU) and Southern University (SU). It will enhance the research and education infrastructure by reforming syllabi of composite materials classes. One graduate student will be directly involved in this project. The opportunities for under-represented minorities will be promoted by directly exposing minority students to this research through seminars and class teaching.