US-Egypt Cooperative Research: Microcracking and Damage Evaluation by Laser Speckle Shearing Interferometry.

0001581说明：该奖项旨在支持伊利诺伊州迪卡尔布北伊利诺伊大学（NIU）机械工程系Mohamed a . Seif博士与埃及扎加齐格大学机械动力工程系Mohammad R. Shaalan博士和Usama Khashaba博士的合作项目。该项目旨在开发和演示一种新的自动化无损评估技术，即激光散斑剪切干涉测量。该技术应该能够确定缺陷和微裂纹的初始发展及其随后在不同材料中的扩展。该方法的灵敏度和最终破坏的四个重要因素，即缺陷的数量和特征、载荷环境、残余应力水平和材料的破坏机制，将进行研究。范围：美国PI在实施濒死体验和在实验力学中使用激光测量方面具有特殊的专业知识。Shaalan博士和Khashaba博士在实验设计、可靠性分析和数据分析方面具有专长。双方在这项研究中拥有互补的专业知识和设施。该项目将导致更简单、更可靠和更便宜的技术，以确定在需要高可靠性的应用中使用的复杂结构的完整性，例如航空结构和工业应用中的关键部件。该项目将涉及一名NIU的美国研究生，为其提供国际研究经验。该提案符合INT在共同感兴趣的领域支持合作研究的目标。该项目得到了美国-埃及联合基金项目的支持，该项目向两国的科学家和工程师提供赠款，以开展这些合作活动。

0001581SeifDescription: This award is to support a collaborative project by Dr. Mohamed A. Seif, Department of Mechanical Engineering, Northern Illinois University (NIU), Dekalb, Illinois, and Dr. Mohammad R. Shaalan and Dr. Usama Khashaba, both of the Department of Mechanical Power Engineering, Zagazig University, Zagazig, Egypt. The project is intended to develop and demonstrate a novel automated non-destructive evaluation (NDE) technique, that of laser speckle shearing interferometry. The technique should be capable of determining flaws and initial development of microcracking and its subsequent propagation in different materials. The sensitivity of the method and four significant factors in final failure, namely the number and character of the flaws, the load environment, the residual stress level, and the mechanism of failure of the material, will be investigated.Scope: The US PI has special expertise in implementing NDE and using laser measurements in experimental mechanics. Dr. Shaalan and Dr. Khashaba have expertise in experimental design, reliability analysis, and data analysis. The two sides have complementary expertise and facilities at their disposal for this research. The project should lead to simpler, more reliable, and less expensive techniques for determining the integrity of complex structures used in applications requiring high reliability, such as aviation structures and critical components in industrial applications. The project will involve a US graduate student at NIU, providing that person with an international research experience. This proposal meets the INT objective of supporting collaborative research in areas of mutual interest. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.