Schäfer, Kilian ; Lutzi, Matthias ; Khan, Muhammad Bilal ; Schäfer, Lukas ; Dirba, Imants ; Bruns, Sebastian ; Valizadeh, Iman ; Weeger, Oliver ; Hartmann, Claas ; Kupnik, Mario ; Adabifiroozjaei, Esmaeil ; Molina-Luna, Leopoldo ; Skokov, Konstantin P. ; Gutfleisch, Oliver (2024)
Magneto-active composites with locally tailored stiffness produced by laser powder bed fusion.
In: Additive Manufacturing, 79
doi: 10.1016/j.addma.2023.103905
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Additive manufacturing technologies enable the production of complex and bioinspired shapes using magneto-responsive materials, which find diverse applications in soft robotics. Particularly, the development of composites with controlled gradients in mechanical properties offers new prospects for advancements in magneto-active materials. However, achieving such composites with gradients typically involves complex multi-material printing procedures. In this study, a single-step laser powder bed fusion (LPBF) process is proposed that enables precise local adjustments of the mechanical stiffness within magneto-active composites. By utilizing distinct laser parameters in specific regions of a composite containing thermoplastic polyurethane and atomized magnetic powder derived from hard magnetic Nd-Fe-B, the stiffness of the composite can be modified within the range of 2–22 MPa. Various magneto-responsive actuators with locally tailored stiffness are fabricated and their magnetic performance is investigated. The enhanced response exhibited by actuators with locally adjusted mechanical properties in comparison to their homogeneous counterparts with identical geometries is shown. As a demonstration of a biomedical application, a magnetically responsive stent with localized adjustment is presented with the ability to meet specific requirements in terms of geometry and local stiffness based on an individual's anatomy and disease condition. The proposed method presents an approach for creating functionally graded materials using LPBF, not only for magneto-active materials but also for several other structural and functional materials.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Schäfer, Kilian ; Lutzi, Matthias ; Khan, Muhammad Bilal ; Schäfer, Lukas ; Dirba, Imants ; Bruns, Sebastian ; Valizadeh, Iman ; Weeger, Oliver ; Hartmann, Claas ; Kupnik, Mario ; Adabifiroozjaei, Esmaeil ; Molina-Luna, Leopoldo ; Skokov, Konstantin P. ; Gutfleisch, Oliver |
| Art des Eintrags: | Bibliographie |
| Titel: | Magneto-active composites with locally tailored stiffness produced by laser powder bed fusion |
| Sprache: | Englisch |
| Publikationsjahr: | 5 Januar 2024 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Additive Manufacturing |
| Jahrgang/Volume einer Zeitschrift: | 79 |
| DOI: | 10.1016/j.addma.2023.103905 |
| Kurzbeschreibung (Abstract): | Additive manufacturing technologies enable the production of complex and bioinspired shapes using magneto-responsive materials, which find diverse applications in soft robotics. Particularly, the development of composites with controlled gradients in mechanical properties offers new prospects for advancements in magneto-active materials. However, achieving such composites with gradients typically involves complex multi-material printing procedures. In this study, a single-step laser powder bed fusion (LPBF) process is proposed that enables precise local adjustments of the mechanical stiffness within magneto-active composites. By utilizing distinct laser parameters in specific regions of a composite containing thermoplastic polyurethane and atomized magnetic powder derived from hard magnetic Nd-Fe-B, the stiffness of the composite can be modified within the range of 2–22 MPa. Various magneto-responsive actuators with locally tailored stiffness are fabricated and their magnetic performance is investigated. The enhanced response exhibited by actuators with locally adjusted mechanical properties in comparison to their homogeneous counterparts with identical geometries is shown. As a demonstration of a biomedical application, a magnetically responsive stent with localized adjustment is presented with the ability to meet specific requirements in terms of geometry and local stiffness based on an individual's anatomy and disease condition. The proposed method presents an approach for creating functionally graded materials using LPBF, not only for magneto-active materials but also for several other structural and functional materials. |
| Freie Schlagworte: | additive manufacturing, laser powder bed fusion, magneto-active composites, magnetic actuation, local stiffness variation |
| Zusätzliche Informationen: | Artikel-ID: 103905 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Elektronenmikroskopie 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Mechanik Funktionaler Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Cyber-Physische Simulation (CPS) 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Mess- und Sensortechnik |
| Hinterlegungsdatum: | 11 Dez 2023 07:31 |
| Letzte Änderung: | 02 Apr 2024 05:14 |
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