Acquisition of Instrumentation Used for the Non-Contact Measurement of Strains and Displacements on the Surface of Composite Materials with High Strain Gradients

购置用于非接触式测量高应变梯度复合材料表面应变和位移的仪器

• 批准号: 0116494
• 负责人: Ronald Bucinell
• 金额: $ 20.98万
• 依托单位: Union College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0116494&HistoricalAwards=false
• 关键词: Acquisition; Instrumentation; Used; Non; Contact

OIA-0116494PI: Ronald BucinellInstitution: Union CollegeTitle: "Instrumentation Used for the Non-Contact Measurement of Strains and Displacements on the Surface of Composite Materials with High Strain Gradients"Abstract:The research equipment being acquired through this grant includes non-contact strain measuring apparatus that will provide all components of strain on complex geometric surfaces in the presence of high strain gradients. A Moire interferometer and video image correlation strain and displacement measuring systems will be acquired. The Moire interferometer provides high-resolution strain and displacements over a relatively small area and the video image correlation system provides medium-resolution strains and displacements over a relatively large area. These features make the two systems complementary. Also included in this grant is the renovation of a 20kip screw-driven electro-mechanical load frame. The renovation will include a rehabilitation of the load frame, upgrading of the electronics, integration of MTS TestStar control software, and a dedicated computer to run the load frame and collect data. The load frame will be fitted with custom fixtures for mounting the non-contact strain apparatus and it will be dedicated to projects that utilize this apparatus.Undergraduate research is one of the pillars of Union College's undergraduateengineering programs. Many of Union College's engineering students graduate and enter graduate programs in engineering. Union's laboratory based curriculum prepares students well for careers in engineering and continued studies in graduate programs. This program relies on maintaining laboratory facilities that expose students to the current state of the art laboratory equipment. The equipment being purchased will go to support the PI and co-PI's research programs that make extensive use of undergraduate students. The equipment will be used to investigate the optimization, characterization, and evaluation of composite structures and test specimens. This equipment will allow for strains and displacements on these structures to be evaluated and used to optimize the configurations. Programs that will be able to take advantage of this effort include the study of composite grid structures for infrastructure applications, evaluation of material performance for reusable launch vehicle applications, and for the development of composite material test methods. Additionally the equipment will be used to investigate the fracture behavior of monolithic materials.The new equipment provide undergraduate engineering students in the mechanical and civil engineering programs at Union College the opportunity to visualize surface strains on complex structures in regions of high strain gradients as part of their research projects. This will give them a unique opportunity to visualize these fields and be able to compare them to finite element and other results. This opportunity will help students to understand the complexity of strain in structures and encourage them to continue their education exploring opportunities in the field of engineering mechanics.

OIA-0116494PI：Ronald BucinellInstitution：Union CollegeTitle：“用于非接触测量高应变梯度复合材料表面应变和位移的仪器”摘要：通过这笔赠款获得的研究设备包括非接触式应变测量仪器，它将在高应变梯度存在的情况下提供复杂几何表面上的所有应变分量。将获得莫尔干涉仪和视频图像相关应变和位移测量系统。莫尔干涉仪在相对较小的区域内提供高分辨率的应变和位移，而视频图像相关系统在相对较大的区域上提供中等分辨率的应变和位移。这些特点使这两个系统相辅相成。这笔赠款还包括翻新一台20 kip螺杆驱动的机电负载架。翻新将包括修复加载框架、升级电子设备、集成MTS TestStar控制软件以及一台运行加载框架和收集数据的专用计算机。加载框架将安装用于安装非接触式应变仪的定制夹具，并将专门用于使用该仪器的项目。本科生研究是联合学院本科生工程专业的支柱之一。联合学院的许多工程专业学生毕业后进入工程专业的研究生课程。联合大学以实验室为基础的课程为学生在工程学和研究生课程中的继续学习做好了准备。该计划依赖于维护实验室设施，使学生接触到当前最先进的实验室设备。正在购买的设备将用于支持PI和联合PI的研究项目，这些项目广泛使用本科生。该设备将用于研究复合材料结构和测试样品的优化、表征和评估。该设备将允许对这些结构上的应变和位移进行评估，并用于优化配置。将能够利用这一努力的项目包括基础设施应用的复合材料网格结构的研究，可重复使用的运载火箭应用的材料性能评估，以及复合材料测试方法的开发。此外，该设备还将用于研究整体材料的断裂行为。作为研究项目的一部分，新设备为联合学院机械和土木工程专业的本科生提供了可视化高应变梯度地区复杂结构上的表面应变的机会。这将给他们一个独特的机会来可视化这些场，并能够将它们与有限元和其他结果进行比较。这个机会将帮助学生了解结构中应变的复杂性，并鼓励他们继续在工程力学领域探索机会。