About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Symposium
|
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Presentation Title |
Evaluation of Shear Flow-Induced Orientation Eeffects on Magnetic Platelet Particles in Extrusion-Deposition Additive Manufacturing Polymer Processing |
| Author(s) |
Douglas E. Smith, Anil Kumar Mandal, Md Anisul Islam, Leo Rodriguez, Wilhelmus J Geerts, Jitendra Tate |
| On-Site Speaker (Planned) |
Douglas E. Smith |
| Abstract Scope |
Custom magnets have been produced with polymer composite extrusion/deposition additive manufacturing using Strontiumferrite/PA12 filaments where magnetic anisotropy appears to be significantly affected by the interaction of particles with the flow field. This paper considers the effect of shear flow during processing on the orientation of suspended magnetic particles. Non-spherical SFO particles are modeled as oblate ellipsoids in a dilute suspension where orientation is evaluated using both Jeffery’s equation for single particles and orientation tensors for groups of particles. Monte Carlo simulations are performed to model orientation distributions in the Jeffery’s simulations, and the Exact Closure facilitates orientation tensor evolution calculations. Predicted particle orientations are compared with measured magnetic squareness for freely extruded strands and printed bead samples. Preliminary results indicate that flow-induced particle orientation may explain the measured orientation of the easy magnetic anisotropy axes in the extrusion/deposition samples. |
| Proceedings Inclusion? |
Planned: Post-meeting proceedings |