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

这项重大研究仪器(MRI)拨款将通过规定气体环境中的轴向、扭转和内压加载，开发用于在实际加载条件下对微型管状样品进行机械测试的新型设备。该设备将能够将样品的温度从环境温度变化到1000摄氏度，并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结构研究。设备的开发将由详细的热机械分析来指导。将研究驱动、传感、加热、加压、数字图像相关、抓取及其控制技术，以便在开发设备时进行有效的集成。微加工和失效寿命预测技术需要了解材料特性及其演变，而只有在实际加载条件下通过微型试件测试才能准确确定材料特性及其演变。这种微型设备将由一大批大学内部和大学内部的研究人员共享，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、集成计算材料工程和失效寿命预测等基础研究。用于制造弹性部件的材料基因组的新兴研究将从该设备中受益匪浅。该设备将对新材料和高性能部件的设计和开发产生影响。它将有可能减少设计新材料的长达10到20年的试验和错误方法，并以比现在更少的不确定性来预测部件的可靠性。与一家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女性工程项目，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.