STTR Phase I: Compressible Magnetorheological Fluids

小企业技术转移研究（STTR）第一阶段项目将证明开发可压缩磁流变（CMR）流体的可行性。 磁流变液由悬浮在载液中的可磁化颗粒组成。 流体的压缩是由施加的外力引起的体积的测量变化。 CMR流体在用于陆地车辆的悬架系统的阻尼器（或减震器）中时将能够同时提供可控的阻尼和弹簧效果。可控阻尼来自流体的粘度变化（在磁场下）。 因此，含有CMR流体的阻尼器可以替代车辆悬架中的常规被动阻尼器和弹簧。 这将导致减轻重量，增加机动性和车辆运动的可控性;并将防止翻车，特别是在崎岖的地形中。 在这项工作中，CMR流体还将在流变性能和压缩性方面进行表征。除了汽车悬架系统外，CMR流体还可用于越野车、摩托车、军用高载荷地面车辆、高速列车和后坐力系统。拟议项目还将为研究生提供多学科培训，包括化学，材料和热力学。

The Small Business Technology Transfer Research (STTR) Phase I project will demonstrate the feasibility of developing a compressible magnetorheological (CMR) fluid. Magnetorheological fluids consist of magnetizable particles suspended in a carrier fluid. The compression of a fluid is the measured change of volume from an applied external force. The CMR fluid, when used in a damper (or a shock absorber) for the suspension system of land vehicles, will be able to simultaneously provide controllable damping and spring effects. The controllable damping comes from the viscosity change (under a magnetic field) of the fluids. Therefore, a damper that contains CMR fluid can replace both the regular passive damper and the spring in the suspension of vehicles. This will result in reduction of weight, increased mobility and controllability of the vehicle's motion; and will prevent roll over, particularly in rough terrains. In the proposed work, the CMR fluids developed will also be characterized in terms of rheological behavior and compressibility.In addition to suspension systems of automobiles, the CMR fluid may be used in off-road vehicles, motorcycles, military high-payload ground vehicles, high speed trains, and recoil systems. The proposed project will also provide graduate students training in multi-disciplinary subjects including chemistry, materials and thermodynamics.