Abstract
This paper highlights the multi-material additive manufacturing (AM) route for manufacturing of innovative materials and structures. Three different recycled thermoplastics, namely acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), and high impact polystyrene (HIPS) (with different Young’s modulus, glass transition temperature, rheological properties), have been selected (as a case study) for multi-material AM. The functional prototypes have been printed on fused deposition modelling (FDM) setup as tensile specimens (as per ASTM D638 type-IV standard) with different combinations of top, middle, and bottom layers (of ABS/PLA/HIPS), at different printing speed and infill percentage density. The specimens were subjected to thermal (glass transition temperature and heat capacity) and mechanical testing (peak load, peak strength, peak elongation, percentage elongation at peak, and Young’s modulus) to ascertain their suitability in load-bearing structures, and the fabrication of functional prototypes of mechanical meta-materials. The results have been supported by photomicrographs to observe the microstructure of the analyzed multi-materials.
Highlights
Today, additive manufacturing (AM) has become one of the most common techniques for fabricating periodic lattices and innovative materials [1,2]
The study conducted for 3D printing of multilateral components of acrylonitrile butadiene styrene (ABS) and thermoplastic polyurethane (TPU) reveals, with support of 3D imaging, that interface properties are found in control with good layer connectivity [22]
Multi-material 3D printing potential is going to be a milestone in rapid manufacturing, customized design, and structural applications
Summary
Additive manufacturing (AM) has become one of the most common techniques for fabricating periodic lattices and innovative materials [1,2]. Many fabrication methods are available, with variable resolutions, including: polyjet 3-D printing; fused deposition modelling (FDM), selective laser sintering (SLS); electron beam melting (EBM); laser lithography; and projection microstereolithography etc. FDM is one of the low-cost techniques of AM which is used to prepare the functional prototypes of polymers/composites [12,13,14,15,16,17]. In FDM, parts are built layer by layer by heating a thermoplastic filament to a semi-liquid state and extruding it through a small nozzle per 3D CAD models in STL format [18,19]. Multi-material 3D printing potential is going to be a milestone in rapid manufacturing, customized design, and structural applications.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
