3D print of polymer bonded rare-earth magnets, and 3D magnetic field scanning with an end-user 3D printer
By C. Huber, Claas Abert, F. Bruckner, M. Groenefeld, O. Muthsam, S. Schuschnigg, K. Sirak, R. Thanhoffer, I. Teliban, C. Vogler and 2 more. 2016
195 citations recorded by the source corpus.
3D print is a recently developed technique, for single-unit production, and for structures that have been impossible to build previously. The current work presents a method to 3D print polymer bonded isotropic hard magnets with a low-cost, end-user 3D printer. Commercially available isotropic NdFeB powder inside a PA11 matrix is characterized, and prepared for the printing process. An example of a printed magnet with a complex shape that was designed to generate a specific stray field is presented, and compared with finite element simulation solving the macroscopic Maxwell equations. For magnetic characterization, and comparing 3D printed structures with injection molded parts, hysteresis measurements are performed. To measure the stray field outside the magnet, the printer is upgraded to a 3D magnetic flux density measurement system. To skip an elaborate adjusting of the sensor, a simulation is used to calibrate the angles, sensitivity, and the offset of the sensor. With this setup, a measurement resolut...
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/dcab3cfcf4b508a93a00fd4b51406871464138d2
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In Electrical and Electronic Engineering
In Electronic, Optical and Magnetic Materials
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Citations in the corpus
- The 2017 Magnetism Roadmap (2017, methodology): “On the micro/macroscale, modern additive manufacturing processes, such as 3D printing, allow, in principle, novel magnet designs [183, 184], but at this stage lack a detailed understanding of the correlation of the fabrication process and materials properties, as well as the validation of useful mag”
- Progress and prospects of hard hexaferrites for permanent magnet applications (2020, background): “A hot topic is the design of 3D magnetic materials and magnets in particular [211, 212].”
- Perspective and Prospects for Rare Earth Permanent Magnets (2020, methodology): “An advantage of the method is that it is possible to produce shapes or graded variations of loading densities in polymerbonded magnets that are designed to produce a desired stray field profile [72,76], although the magnitudes of the fields that can be produced are small, on the order of 50 kA m (1)”