التفاصيل البيبلوغرافية
| العنوان: |
THE IMPACT OF A STATIC-MIXING NOZZLE ON UNIFORMITY IN MATERIAL EXTRUSION LARGE-SCALE ADDITIVE MANUFACTURING |
| المؤلفون: |
Brackett, James, Charles, Elijah, Smith, Tyler, Hassen, Ahmed, Kunc, Vlastimil, Duty, Chad |
| سنة النشر: |
2022 |
| المجموعة: |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
| الوصف: |
There are many methods of incorporating more than one material in Additive Manufacturing (AM) processes. Oak Ridge National Laboratory has developed a unique solution that enables in-situ material switching by developing a dual-hopper feed system for Cincinnati’s Big Area Additive Manufacturing (BAAM) system. Continuous extrusion during a step-change in material feedstock results in a unique blended material transition region that exhibits a heterogeneous internal morphology. To improve mixing of materials during extrusion, a customized static-mixing nozzle was created for use with the BAAM. Single-bead transitions from Material A to B and B to A were printed with the mixing nozzle at a specified screw speed. Compositional analysis tracked the progression of the material transition as a function of extrudate volume. The resulting transition curves were compared against a standard nozzle configuration. Optical microscopy of cross sections also demonstrated that the static-mixing nozzle promoted a more uniform bead geometry as well as a more homogeneous internal structure throughout the material transition. |
| نوع الوثيقة: |
other/unknown material |
| وصف الملف: |
application/pdf |
| اللغة: |
unknown |
| Relation: |
http://www.osti.gov/servlets/purl/1875346; https://www.osti.gov/biblio/1875346 |
| الاتاحة: |
http://www.osti.gov/servlets/purl/1875346
https://www.osti.gov/biblio/1875346 |
| رقم الانضمام: |
edsbas.EC29ADE6 |
| قاعدة البيانات: |
BASE |