Study of Dynamic Fracture of Composite Materials, Award in U.S. and Indian Currencies

项目描述：本项目支持博士的合作项目。罗得岛大学机械工程系的Arun Shukla和印度理工学院机械工程系的B.D. Agarwal。该项目旨在研究由玻璃纤维和聚酯树脂制成的透明双折射复合材料在动载荷条件下的损伤发生和增长。一个克兰茨沙尔丁式的光学记录系统将在IIT-K设计和建造。它将能够以每秒2万到90万帧的速度记录20张照片。在断裂过程中，在很短的时间间隔内对试样进行拍照。初始条纹图将提供损伤起始条件的信息，而随后的条纹图将提供动态损伤增长和损伤停止条件的信息。研究范围：复合材料在动载荷作用下的断裂问题目前还没有得到很好的理解，因此本课题的研究是及时的。印度和美国的合作者在处理这一课题研究方面具有专业知识。他们的经历相得益彰。这个项目代表了一个可能非常有用的国际合作的案例。

Description: This project supports a collaborative project by Drs. Arun Shukla of the Mechanical Engineering Department, University of Rhode Island (URI), and B.D. Agarwal, of the Mechanical Engineering Department, Indian Institute of Technology, Kanpur (IIT-K). The project aims at the study of damage initiation and growth, under dynamic loading conditions, in transparent birefringent composites made of glass fibers and polyester resin. An optical recording system of the Cranz Schardin type is to be designed and constructed at IIT-K. It will be capable of recording 20 pictures at rates from 20,000 to 900,000 frames per second. Specimens are to be photographed during the fracture process at very short time intervals. Initial fringe patterns are expected to give information on the the damage initiation conditions while subsequent fringe patterns will give information about the dynamic damage growth and damage arrest conditions. Scope: The topic of this research on fracture of composites under dynamic loads is timely since it is not currently well understood. The Indian and U.S. collaborators have expertise in dealing with the subject research. Their experiences complement each other well. This project represents a case of a potentially very useful international collaboration.