Development of a New Mechano-Thermo-Magnetic Testing System for Smart Materials and for Student Training

9975848 Taya该奖项将提供部分支持，用于开发新的实验能力，用于实验研究一类新的智能磁性材料，这些材料表现出机械，热和磁行为之间的耦合：磁致伸缩合金，磁致伸缩合金纤维和颗粒致动聚合物基复合材料以及均匀铁磁形状记忆合金及其复合材料。 这些磁性智能材料变得越来越重要，因为它们在驱动时具有快速而强大的响应，构成了智能设备和结构的关键致动器元件。 这些磁性智能材料的准确表征将为材料的本构方程提供精确的数据，这些数据将被设计此类智能设备的工程师使用。测试系统将允许在非常宽的磁热机械载荷范围内进行测试。 例如，可以进行恒定应力-增加磁场或恒定磁场-增加施加的应力和磁化实验，其中应力和场轴彼此平行或正交。 最后，该电磁铁可单独用于测量恒温下的磁性能和无应力磁滞行为。 该工具将用于短期、中期和长期目的。 短期至中期的目的包括使用该仪器来表征磁热机械载荷下铁磁形状记忆合金的磁弹性性能，作为目前研究项目的一部分，与航空航天公司合作设计用于直升机桨叶致动器系统的形状记忆合金。 对于中期到长期的目的，拟议的仪器将用于表征的铁磁SMA的相变温度接近人体温度与应用程序的生物医学植入装置。 华盛顿大学几家当地公司的学生和工程师以及科罗拉多州博尔德市国家标准与测试研究所（NIST）的研究人员将使用该仪器。该仪器还将用于本科教育，允许开发磁流变设计的新课程，并将磁性模块添加到现有的材料科学课程中。%开发的设施将大大提高华盛顿大学、私营部门和联邦政府实验室的研究能力和师生的协作互动。*

9975848TayaThis award will provide partial support for the development of a new experimental capability necessary for the experimental study of a new class of smart magnetic materials that exhibit coupling among the mechanical, thermal and magnetic behavior: magnetostrictive alloys, magnetostrictive alloy fiber and particulate actuated polymer matrix composites and homogeneous ferromagnetic shape memory alloys and their composites. These magnetic smart materials are increasingly important, as they constitute a key actuator element for smart devices and structures thanks to their fast and powerful response at the time of actuation. Accurate characterization of these magnetic smart materials will provide precise data for the constitutive equations of the materials, which will be used by the engineers designing such smart devices.The testing system will allow testing under a very broad range of magnetro-thermo-mechanical loading. For instance, it will be possible to perform constant stress - increasing magnetic field or constant magnetic field - increasing applied stress and magnetization experiments in which the stress and field axes are parallel or orthogonal to one another. Finally, the electromagnet may be used separately for the measurement of magnetic properties at constant temperature and stress free hysteresis behaviors. The instrument will be used for short, intermediate to long-term purposes. The short to intermediate term purpose includes use of the instrument to characterize the magnetoelastic properties of the ferromagnetic shape memory alloys under magneto-thermo-mechanical loading, as a part of the current research project, design of shape memory alloys for actuator system of helicopter blades, in collaboration with aerospace companies. For the intermediate to long-term purpose, the proposed instrument will be used for characterization of the ferromagnetic SMAs with transformation temperatures close to a human body temperature with applications to biomedical implant devices. Students and faculty engineers at several local companies, at the University of Washington, and researchers at the National Institute of Standards and Testing (NIST), Boulder, Colorado will use the instrument.The instrument will also be used for undergraduate education allowing a new course in magneto-rheological design to be developed, and magnetic modules to be added to existing materials science courses. %%%The developed facility will significantly enhance the research capabilities and collaborative interactions of faculty and students at the University of Washington the private sector, and a Federal government laboratory.***