Sensors: Magnetoshapememory Effect Harnessed for Power Generation and Sensing

摘要0428428H。Sehitogluv大学。伊利诺斯该研究项目建议努力了解铁磁性形状记忆合金，以最终加速它们在新的发电和传感系统中的应用。通过利用与外部应力和/或位移相关的磁化变化，这项工作将研究如何为传感器、执行器和其他具有广泛应用的设备发电。研究了测量原位变形和磁化强度的实验工具，研究了具有应用前景的铁磁形状记忆材料的力学响应和磁力响应。这些新材料包括单晶和多晶形式的CoNiAl、FeNiGa和CoNi。这项工作还描述了改进这些材料的热处理和成分的方法，以便它们可以更可靠地用于传感和发电应用。实验结果可望为磁-机械模型和筛分材料提供常数。作为一个整体，设想了一个具有显著潜在好处的实验、理论和设备设计方法学项目。该项目还为研究生和本科生提供了一个机会，让他们了解转化材料、铁磁性、形状记忆行为以及传感和发电设备。外展活动将包括为工程师举办的关于磁力形状记忆效应的短期课程，以及与对遥感和发电感兴趣的工业和联邦组织合作。

Abstract0428428H. SehitogluUniv. IllinoisThe research project proposes to undertake an effort in understanding the ferromagnetic shape memory alloys to ultimately accelerate their utilization in new power generation and sensing systems. By harnessing the change in magnetization associated with external stress and/or displacements, the work will investigate how to generate power for sensor, actuator and other devices with a wide range of applications. Experimental tools for measuring in-situ deformation and magnetization are investigated, and the mechanical and magneto-mechanical response of promising ferromagnetic shape memory materials studied. These new materials include CoNiAl, FeNiGa and CoNi in single crystalline and polycrystalline forms. The work also describes ways to improve the thermal treatment and composition of these materials so they can be utilized more reliably in applications for both sensing and power generation. The experimental results are expected to provide the constants for the magneto-mechanical model as well as screen materials. Combined as a whole, an experimental, theoretical and device design methodology program with significant potential benefits is envisioned. The project further provides an opportunity to train graduate students as well as undergraduate students in understanding transforming materials, ferromagnetism, shape memory behavior, and sensing and power generation devices. The outreach activities will include a short course on magneto shape memory effect for engineers and collaborating with industrial and federal organizations interested in remote sensing and power generation.