Abstract Composite materials are being used in the design of new devices to produce more functional, cheap and on-demand products. In particular, 3D printing technology based on composites opens a huge field enabling the freedom of design and the ability to manufacture complex structures. In this context, the analysis of the functional properties of printable composites is of great importance. The work is focused on the analysis of the mechanical damping of a composite made with different concentrations of a Ni45Mn36.7In13.3Co5 metamagnetic shape memory alloy into an UV-curing polymer. The composites provide a bulk material containing very brittle metallic μ-particles that can be handled for technological applications. Damping and dynamic modulus of the composites were modified with small magnetic fields below 100kA/m, proving that the damping capacity can be tuned by applying an external magnetic field. From the measurements, it has been also possible to determine the intrinsic damping and moduli of the alloy particles, which show the characteristic properties linked to the MT. These preliminary results allow proposing this composite material as a potential functional material to be used in the design of printable devices for magneto-mechanical damping applications.

中文翻译：

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用于 4D 打印的复合材料中的磁可调阻尼

摘要 复合材料被用于新设备的设计，以生产更多功能性、廉价和按需产品。特别是，基于复合材料的 3D 打印技术开辟了一个巨大的领域，使设计自由和制造复杂结构的能力成为可能。在这种情况下，对可印刷复合材料的功能特性的分析非常重要。这项工作的重点是分析由不同浓度的 Ni45Mn36.7In13.3Co5 变磁形状记忆合金制成的复合材料与紫外线固化聚合物的机械阻尼。该复合材料提供了一种含有非常脆的金属 μ 粒子的散装材料，可用于技术应用。复合材料的阻尼和动态模量在低于 100kA/m 的小磁场下进行了修改，证明可以通过施加外部磁场来调整阻尼能力。通过测量，还可以确定合金颗粒的固有阻尼和模量，这显示了与 MT 相关的特性。这些初步结果允许将这种复合材料作为一种潜在的功能材料，用于设计用于磁机械阻尼应用的可印刷设备。