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Strengthening of 3D printed fused deposition manufactured parts using the fill compositing technique.

Belter JT, Dollar AM - PLoS ONE (2015)

Bottom Line: In this paper, we present a technique for increasing the strength of thermoplastic fused deposition manufactured printed parts while retaining the benefits of the process such as ease, speed of implementation, and complex part geometries.By carefully placing voids in the printed parts and filling them with high-strength resins, we can improve the overall part strength and stiffness by up to 45% and 25%, respectively.We then show three-point bend testing data comparing solid printed ABS samples with those strengthened through the fill compositing process, as well as examples of 3D printed parts used in real-world applications.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering and Material Science, Yale University, New Haven, Connecticut, United States of America.

ABSTRACT
In this paper, we present a technique for increasing the strength of thermoplastic fused deposition manufactured printed parts while retaining the benefits of the process such as ease, speed of implementation, and complex part geometries. By carefully placing voids in the printed parts and filling them with high-strength resins, we can improve the overall part strength and stiffness by up to 45% and 25%, respectively. We discuss the process parameters necessary to use this strengthening technique and the theoretically possible strength improvements to bending beam members. We then show three-point bend testing data comparing solid printed ABS samples with those strengthened through the fill compositing process, as well as examples of 3D printed parts used in real-world applications.

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Related in: MedlinePlus

Comparison of robotic finger link strength shows improvement in failure strength using a 3D printed shell of the same part geometry filled with epoxy resin.The black x shows the point of failure.
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pone.0122915.g013: Comparison of robotic finger link strength shows improvement in failure strength using a 3D printed shell of the same part geometry filled with epoxy resin.The black x shows the point of failure.

Mentions: Due to the complex geometry being tested, we will directly compare the failure load instead of failure stress as was done in the standard three-point bend tests. Fig 13 shows the comparison of proximal robot link strength (bending in the extension direction) of the three samples types. Fig 14 shows the comparison of robot wheel strength between solid printed samples and those filled with resin. These plots also show the relative stiffness of the three samples by analyzing the slope of the force- displacement curve.


Strengthening of 3D printed fused deposition manufactured parts using the fill compositing technique.

Belter JT, Dollar AM - PLoS ONE (2015)

Comparison of robotic finger link strength shows improvement in failure strength using a 3D printed shell of the same part geometry filled with epoxy resin.The black x shows the point of failure.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4400136&req=5

pone.0122915.g013: Comparison of robotic finger link strength shows improvement in failure strength using a 3D printed shell of the same part geometry filled with epoxy resin.The black x shows the point of failure.
Mentions: Due to the complex geometry being tested, we will directly compare the failure load instead of failure stress as was done in the standard three-point bend tests. Fig 13 shows the comparison of proximal robot link strength (bending in the extension direction) of the three samples types. Fig 14 shows the comparison of robot wheel strength between solid printed samples and those filled with resin. These plots also show the relative stiffness of the three samples by analyzing the slope of the force- displacement curve.

Bottom Line: In this paper, we present a technique for increasing the strength of thermoplastic fused deposition manufactured printed parts while retaining the benefits of the process such as ease, speed of implementation, and complex part geometries.By carefully placing voids in the printed parts and filling them with high-strength resins, we can improve the overall part strength and stiffness by up to 45% and 25%, respectively.We then show three-point bend testing data comparing solid printed ABS samples with those strengthened through the fill compositing process, as well as examples of 3D printed parts used in real-world applications.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering and Material Science, Yale University, New Haven, Connecticut, United States of America.

ABSTRACT
In this paper, we present a technique for increasing the strength of thermoplastic fused deposition manufactured printed parts while retaining the benefits of the process such as ease, speed of implementation, and complex part geometries. By carefully placing voids in the printed parts and filling them with high-strength resins, we can improve the overall part strength and stiffness by up to 45% and 25%, respectively. We discuss the process parameters necessary to use this strengthening technique and the theoretically possible strength improvements to bending beam members. We then show three-point bend testing data comparing solid printed ABS samples with those strengthened through the fill compositing process, as well as examples of 3D printed parts used in real-world applications.

Show MeSH
Related in: MedlinePlus