Researchers Customize 3D Printing for Functionally Graded Materials with Extrusion Screw https://ift.tt/2Gfp8Pq In the recently published ‘Development of 3D printer for functionally graded material using fused deposition modelling method,’ researchers discuss current obstacles in the fabrication of parts and prototypes as users are so often restricted to the use of one material—making it difficult to 3D print functionally graded material (FGM). Here, the research team explains how the issue can be overcome with FDM 3D printing customizations. Using a specialized extrusion screw, the team has been able to blend the polymer matrix and filler continually during 3D printing. This research was performed in response to a restricted number of options in materials, although metal 3D printing is a relative newcomer in terms of popularity for industrial companies around the world, featuring a wide range of composites like:
Mechanical properties of polymers can be greatly improved with Kevlar, along with glass and continuous carbon fiber; in fact, the researchers state the tensile strength can be increased by 6.3 times with the addition of carbon or glass.
The concept graduates further to include an FGM, a unique material as it can change according to volume—even transforming in a controllable direction, with the simplest form made up of one that changes into a continuous form, and the other into a stepwise graded structure.
Along with the prestige of being used in reusable rocket engines, FGM is also suitable for many different applications, to include:
FGM are not easy to produce through conventional methods, but 3D printing offers the perfect route via the ability to print in layers. Flexibility is still an issue though; to combat that problem, the research team built an FDM 3D printer with the flexibility to customize mixing using an embedded screw extruder, allowing the printer to use two or more materials at the same time during 3D printing, controlled through a programmable logic computer (PLC).
As 3D printing processes continue to progress, there are a wide variety of new techniques for FDM 3D printing to include better speeds, along so many different composites, from carbon fiber to wood and more. What do you think of this news? Let us know your thoughts! Join the discussion of this and other 3D printing topics at 3DPrintBoard.com. [Source / Images: ‘ Development of 3D printer for functionally graded material using fused deposition modelling method’] Please enable JavaScript to view the comments powered by Disqus. Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com July 18, 2019 at 02:42AM
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