GOALI: A Sensor-Actuator System for Tunable Shock and Vibration Absorption

0529440Faramarz Gordaninejau内华达大学/Reno该项目研究了一种新型的磁流变弹性体(MRE)材料系统，该系统同时具有传感器、执行器和可调谐减震器(TSVA)。磁流变液不仅可以在高频(千赫)下工作并经历大变形，而且还可以提供场可控的存储和衰减特性。将进行理论和实验研究，以建立对具有优于最先进材料的特性的新型MRE的行为的基本理解。将使用经表面处理的新型磁性颗粒。用不同粒径的热固性和热塑性弹性体和合成橡胶的不同共混物以随机或场取向排列的方式合成新的MRE。磁流变液的一个非常有用和实际的应用是将它们用作谐波TSVA/传感器设备，以检测和隔离反不平衡旋转轴的振动。MRE可用于健康监测和暴露在自然灾害中的民用基础设施保护。更广泛的影响包括在内华达州建立MRES研究基础设施，机械和化学工程系与工业之间的合作，在这个多学科领域教育研究生和本科生，以及通过校园内外的各种技术演示吸引高中生参加大学的暑期培训。这是一个由传感器倡议NSF 05-526支持的目标项目。

Abstract0529440Faramarz GordaninejaUniv Nevada/RenoThis project investigates a novel magneto-rheological elastomer (MRE) material system that is a sensor, an actuator, and a tunable shock and vibration absorber (TSVA) at the same time. MREs can function not only in high frequencies (kilohertz) and go through large deformations, but can also provide field-controllable storage and damping characteristics. Theoretical and experimental studies will ba carried out to establish a fundamental understanding of the behavior of a new class of MREs with superior characteristics over the state-of-the-art materials. Novel surface treated magnetic particles will be utilized. New MREs will be synthesized with various blends of thermoset and thermoplastic elastomers and synthetic rubber with various particle sizes in random or field-oriented arrangements. One very useful and practical application of MREs is to utilize them as harmonic TSVA/sensor devices to sense and isolate vibration in counter unbalanced rotating shafts. MREs could be utilized for health monitoring and civil infrastructure protection exposed to natural hazards.The broader impacts include establishing an infrastructure in MREs research in Nevada, a collaboration between mechanical and chemical engineering departments and industry, educating graduate and undergraduate students in this multidisciplinary area, and attracting high school students to summer training at the University through various demonstrations of the technology on and off the campus. This is a GOALI project supported under sensor initiative NSF 05-526.