U.S.-Germany Cooperative Research: Constitutive Behavior and Reliability of Ferroelectric Ceramics

9981585林奇这个奖项支持克里斯托弗林奇和三名学生从格鲁吉亚理工学院在合作与于尔根罗德尔的机械工程系在达姆施塔特，德国技术大学。 该项目将侧重于了解铁电陶瓷在电气和机械载荷下的失效机制。 铁电陶瓷最近的应用，如重量轻，响应快的声学和振动控制设备要求材料能够承受大的应变，使这种材料的可靠性的顶级工程领域之一。 美国小组开发了一种有限元代码，能够模拟铁电材料中的应力和电场集中;德国小组开发了实验技术和专用设备，用于测量所研究材料的裂纹扩展行为。 此次合作将汇集两个团队的互补优势，这将为最佳陶瓷的设计带来新的能力。

9981585LynchThis award supports Christopher Lynch and three students from Georgia Tech in a collaboration with Juergen Roedel of the Department of Mechanical Engineering at the Technical University of Darmstadt, Germany. The project will focus on understanding the mechanisms of failure of ferroelectric ceramics under both electrical and mechanical loading. Recent applications of ferroelectric ceramics, such as light-weight, quick-response acoustic-and vibration-control devices require that the materials be able to withstand large strains, making reliability of such materials one of the top engineering fields. The U.S. group has developed a finite-element code capable of modeling stress and electric field concentration in ferroelectric materials; the German group has developed experimental techniques and specialized equipment for measuring the crack propagation behavior of the materials under investigation. The collaboration will bring together the complementary strengths of both groups, which should lead to new capabilities for the design of optimal ceramics.