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Accepted (AM)Open Access (License Unspecified), Open
Journal article
Structure–property relationships for 3D-printed PEEK intervertebral lumbar cages produced using fused filament fabrication
Journal of materials research, v 33(14), pp 2040-2051
27 Jul 2018
PMID: 30555210
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Recent advances in the additive manufacturing technology now enable fused filament fabrication of polyetheretherketone (PEEK). A standardized lumbar fusion cage design was 3D printed with different speeds of the printhead nozzle to investigate whether 3D-printed PEEK cages exhibit sufficient material properties for lumbar fusion applications. It was observed that the compressive and shear strength of the 3D-printed cages were 63–71% of the machined cages, whereas the torsion strength was 92%. The printing speed is an important printing parameter for 3D-printed PEEK, which resulted in up to 20% porosity at the highest speed of 3000 mm/min, leading to reduced cage strength. Printing speeds below 1500 mm/min can be chosen as the optimal printing speed for this printer to reduce the printing time while maintaining strength. The crystallinity of printed PEEK did not differ significantly from the as-machined PEEK cages from extruded rods, indicating that the processing provides similar microstructure.
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Details
- Title
- Structure–property relationships for 3D-printed PEEK intervertebral lumbar cages produced using fused filament fabrication
- Creators
- Cemile Basgul - Drexel UniversityTony Yu - Drexel UniversityDaniel W. MacDonald - Drexel UniversityRyan Siskey - ExponentMichele Marcolongo - Drexel UniversitySteven M. Kurtz - Exponent (United States)
- Publication Details
- Journal of materials research, v 33(14), pp 2040-2051
- Publisher
- Cambridge University Press
- Number of pages
- 12
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000440179300011
- Scopus ID
- 2-s2.0-85048768917
- Other Identifier
- 991019168632804721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary