Lightweight ferromagnetic shape memory based vibration dampers: from passive to active control andenergy harvesting (SMARTDAMP)

随着最近轻量化建筑和设计的蓬勃发展，减振和控制不良振动在许多工程学科中扮演着越来越重要的角色。铁磁形状记忆合金(FSMA)构成了一类相当新颖的机械-磁性换能器，它本质上具有被动调幅、主动控制、在线监测以及振动系统中的能量收集所需的所有特性。对于轻质结构的应用，FSMA涂料以及铝箔和聚合物复合加固元件是非常有前途的。然而，在这一点上，量身定制的合成和对所产生的性质的彻底探索仍然是非常不确定的。以建立基于FSMA的故意可控减振元件为最终目标，该项目将遵循严格的开发路线，从减振元件的合成、表征和优化，到对各种性能和疲劳的严格评估。抑制承诺可由合成条件调节，并可通过外加磁场或附加涡流抑制来控制。同时作为应变计和能量收集器，具有反馈和远程控制的免服务主动减振系统被设想。

With the recent boom in lightweight construction and design, dampingand control of undesirable vibrations plays an increasing role innumerous engineering disciplines. Ferromagnetic shape memoryalloys (FSMA) constitute a rather novel class of mechano-magnetictransducers that intrinsically bear all properties required for passivedamping, active control, online monitoring as well as energyharvesting in vibrating systems. For application in lightweightconstructions, FSMA coatings as well as foil and polymer compositedamping elements are highly promising. Yet, tailored synthesis andthorough exploration of resulting properties is still greatlyunestablished at this point. With the final aim of establishing FSMAbased deliberately controlable damping elements, this project willfollow a stringent development route, ranging from synthesis,characterization and optimization of the damping elements to rigorousassessments of all flavors of performance and fatigue. Dampingpromisesto be tunable by synthesis conditions and deliberatelycontrollable by application of an external magnetic field orsupplemental eddy current damping. Concurrently acting as straingauges and energy harvesters, service-free active damping systemswith feedback and remote controllability are envisioned.