MRI: Development of a Miniature, High Temperature, Multiaxial Testing Equipment for Advanced Materials and Engineering Research

这项主要研究仪器（MRI）补助金将使新设备的开发，通过在气体环境中规定轴向，扭转和内部压力载荷，在现实的负载条件下对微型管状试样进行机械测试。该设备将有能力改变样品温度从环境温度到1000摄氏度，它将被设计成适合在光学显微镜下和扫描电子显微镜下进行原位微观结构研究。设备开发将以详细的热机械分析为指导。驱动，传感，加热，加压，数字图像相关，抓取及其控制技术将被研究，以有效地整合在开发设备。微制造和失效寿命预测技术需要了解材料性能及其演变，这只能通过在实际负载条件下进行微型试样测试来准确确定。该微型设备将由众多大学间和大学内的研究人员共享，用于能源、航空航天、汽车、电子、生物医学、传感器和基础设施行业的材料设计和表征、微成形、集成计算材料工程以及失效寿命预测等基础研究。用于制造弹性组件的材料基因组的新兴研究将从这种设备中受益匪浅。该设备将影响新材料和高性能部件的设计和开发。它将有可能减少设计新材料的10到20年的长期试验和错误方法，并以比今天更小的不确定性预测部件的可靠性。与美国测试设备制造商的合作将促进设备开发过程和设备的快速商业化，使其可供其他研究人员使用。通过北卡罗来纳州立大学的工程场所和妇女工程项目，K-12教师和学生将获得设备的实践经验。

This Major Research Instrumentation (MRI) grant will enable the development of novel equipment for mechanical testing of miniature tubular specimens under realistic loading conditions by prescribing axial, torsional, and internal pressure loading in a gaseous environment. The equipment will have the capability to vary specimen temperature from ambient to 1000 degrees Celsius and it will be designed to fit under an optical microscope and into scanning electron microscopes for in-situ microstructural studies. The equipment development will be guided by detailed thermo-mechanical analysis. Technologies of actuation, sensing, heating, pressurization, digital image correlation, gripping, and their controls will be investigated for effective integration in developing the equipment. Micro-fabrication and failure life prediction techniques require understanding of material properties and their evolutions, which can only be determined accurately through miniature specimen testing under realistic loading conditions. Miniature specimens can be machined from components in service for testing to estimate remaining life.This miniature equipment will be shared by a large group of inter and intra university researchers for fundamental research on material design and characterization, micro-forming, integrated computational materials engineering, and failure life prediction for the energy, aerospace, automobile, electronics, biomedical, sensor and infrastructure industries. Emerging research in materials genome for manufacturing resilient components will benefit immensely from this equipment. This equipment will impact design and development of new materials and high-performance components. It will have the potential to reduce the long 10 to 20 year trial and error methods of designing new materials, and to predict component reliability with much less uncertainty than today. Partnership with a US testing equipment manufacturer will facilitate equipment development processes and quick commercialization of the equipment to make it available to other researchers. Through The Engineering Place and Women in Engineering programs at NC State University, K-12 teachers and students will get hands-on experience with the equipment.