MRI: Acquisition of a Structural Testing System for Interdisciplinary Research and Teaching

MRI：获取用于跨学科研究和教学的结构测试系统

• 批准号: 1428331
• 负责人: Mary Christiansen
• 金额: $ 28.96万
• 依托单位: University of Minnesota Duluth
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1428331&HistoricalAwards=false
• 关键词: MRI; Acquisition; Structural; Testing; System

This Major Research Instrumentation award supports the procurement of a large-scale structural testing system that is necessary to test full-scale specimens and verify the performance as well as the efficiency of various rehabilitation techniques for civil infrastructure. The evaluation and rehabilitation of America's aging infrastructure is a serious issue that is costing the country billions of dollars per year. For this reason, research investigating economical rehabilitation techniques that can be applied easily, employed in a timely manner and that offer superior durability is of the utmost importance. Experimental testing is required to verify and validate the quality of these rehabilitation techniques and materials before they are implemented. The overall research vision for this project is the development of innovative, cost-effective and sustainable solutions for the renewal and rehabilitation of civil infrastructure in America and around the world. Results of this research will benefit above and below grade structures including buildings, bridges and pavements and will help in maintaining public safety and confidence in the nation?s infrastructure. In addition, it will also serve to enhance the education of engineering students by providing significant advancement in learning through the integration of teaching and research at both the undergraduate and graduate levels. Durability is a key issue when it comes to investigating and evaluating the success or failure of the structural design of a new or rehabilitated structure. The use of advanced and sustainable materials is being proposed as alternative solutions to ensure the durability of these structures. The performance of these new and restorative materials will be evaluated by the research team through structural testing of a wide-variety of large-scale specimens under different loading combinations in conjunction with microstructural analysis of the materials. This will allow the research team to evaluate the aforementioned materials under real service conditions and aid in understanding their failure mechanisms. Additional topics that will be researched include: development of "smart" rehabilitated concrete and steel structures, performance of innovative and sustainable materials for use in new construction and structural rehabilitation, development of sustainable pavements infrastructure, investigation of time-dependent properties of soils and performance of engineered wood products.

该主要研究仪器奖支持采购大型结构测试系统，该系统对于测试全尺寸样本并验证各种民用基础设施修复技术的性能和效率是必要的。评估和修复美国老化的基础设施是一个严重的问题，每年花费数十亿美元。 因此，研究调查经济的修复技术，可以很容易地应用，及时采用，并提供上级耐久性是至关重要的。 在实施这些修复技术和材料之前，需要进行实验测试，以核实和验证其质量。 该项目的总体研究愿景是为美国和世界各地的民用基础设施的更新和修复开发创新，具有成本效益和可持续的解决方案。 这项研究的结果将有利于以上和以下等级的结构，包括建筑物，桥梁和人行道，并将有助于维护公共安全和信心的国家？的基础设施。 此外，它也将有助于提高工程专业学生的教育，通过在本科生和研究生水平的教学和研究相结合，提供学习的显着进步。耐久性是一个关键问题，当涉及到调查和评估的成功或失败的结构设计的一个新的或修复的结构。 使用先进和可持续的材料被提议作为替代解决方案，以确保这些结构的耐久性。 研究小组将通过在不同载荷组合下对各种大型标本进行结构测试，并结合材料的微观结构分析，对这些新材料和修复材料的性能进行评估。 这将使研究小组能够在真实的使用条件下评估上述材料，并有助于了解其失效机制。 将研究的其他主题包括：“智能”修复混凝土和钢结构的开发，用于新建筑和结构修复的创新和可持续材料的性能，可持续路面基础设施的开发，土壤随时间变化的特性的调查和工程木制品的性能。