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

0001581SeifDescription：该奖项旨在支持北伊利诺伊大学机械工程系Mohamed A.Seif博士与埃及扎加齐格扎加齐格大学机械动力工程系Mohammad R.Shaalan博士和Usama Khashaba博士开展的一项合作项目。该项目旨在开发和演示一种新的自动无损评估(NDE)技术-激光散斑剪切干涉测量。该技术应该能够确定微裂纹的缺陷和初始发展，以及它在不同材料中的后续扩展。将调查该方法的敏感性和最终失效的四个重要因素，即缺陷的数量和特征、载荷环境、残余应力水平和材料的失效机制。范围：美国PI在实施无损检测和在实验力学中使用激光测量方面具有特殊的专业知识。沙兰博士和卡沙巴博士在实验设计、可靠性分析和数据分析方面拥有专业知识。双方在这项研究方面拥有互补的专业知识和设施。该项目应该带来更简单、更可靠、成本更低的技术，用于确定要求高可靠性的应用中所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。该项目将涉及一名在北卡罗来纳大学的美国研究生，为他提供国际研究经验。这一建议符合INT支持在共同感兴趣的领域进行合作研究的目标。该项目得到了美国-埃及联合基金计划的支持，该计划为两国的科学家和工程师提供资助，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.