Compressive Behaviour of Lattice Structures Manufactured by Polyjet Technologies

Lancea, Camil; Campbell, Ian; Chicoş, Lucia-Antoneta; Zaharia, Sebastian Marian

doi:10.3390/polym12122767

Cited by 15 publications

(9 citation statements)

References 21 publications

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“…During the last decade, special attention has been given to the development of design and optimization methods for lattice structures [ 6 , 9 , 10 , 11 , 12 ]. Moreover, the fabrication and testing for a wide variety of lattices fabricated using different AM processes have been reported, including material extrusion (ME) [ 13 , 14 , 15 , 16 , 17 ], vat photopolymerization (VP) [ 18 , 19 , 20 , 21 , 22 ], jet fusion (JF) [ 23 , 24 , 25 ], and selective laser sintering (SLS) [ 21 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Miniature Lattice Structures Produced by Material Extrusion and Vat Photopolymerization Additive Manufacturing

2021

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In this paper, we study the capabilities of two additive manufacturing technologies for the production of lattice structures, namely material extrusion and vat photopolymerization additive manufacturing. A set of polymer lattice structures with diverse unit cell types were built using these additive manufacturing methods and tested under compression. Lattice structures built using material extrusion had lower accuracy and a lower relative density caused by the air gaps between layers, but had higher elastic moduli and larger energy absorption capacities, as a consequence of both the thicker struts and the relatively larger strength of the feedstock material. Additionally, the deformation process in lattices was analyzed using sequential photographs taken during the compression tests, evidencing larger differences according to the manufacturing process and unit-cell type. Both additive manufacturing methods produced miniature lattice structures with similar mechanical properties, but vat polymerization should be the preferred option when high geometrical accuracy is required. Nevertheless, as the solid material determines the compressive response of the lattice structure, the broader availability of feedstock materials gives an advantage to material extrusion in applications requiring stiffer structures or with higher energy absorption capabilities.

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Section: Introductionmentioning

confidence: 99%

A Comparison of Miniature Lattice Structures Produced by Material Extrusion and Vat Photopolymerization Additive Manufacturing

2021

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“…Additive manufacturing is associated with the production of complex arbitrary structures such as lattice structures. MJ technology is also utilized in the production of lattice geometries to be used in different types of testing instead of selective laser melting (SLM) technology which has been intensively used in lattice specimen production but the cost of which is much higher than for polymer-based parts [ 128 ]. In one study, MJ technology was used to evaluate the compressive behavior of triply periodic minimum surface lattice structures [ 129 ].…”

Section: Applicationsmentioning

confidence: 99%

The State of the Art of Material Jetting—A Critical Review

Gülcan¹,

Günaydın²,

Tamer

2021

Polymers

131

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Material jetting (MJ) technology is an additive manufacturing method that selectively cures liquid photopolymer to build functional parts. The use of MJ technology has increased in popularity and been adapted by different industries, ranging from biomedicine and dentistry to manufacturing and aviation, thanks to its advantages in printing parts with high dimensional accuracy and low surface roughness. To better understand the MJ technology, it is essential to address the capabilities, applications and the usage areas of MJ. Additionally, the comparison of MJ with alternative methods and its limitations need to be explained. Moreover, the parameters influencing the dimensional accuracy and mechanical properties of MJ printed parts should be stated. This paper aims to review these critical aspects of MJ manufacturing altogether to provide an overall insight into the state of the art of MJ.

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“…For setting the manufacturing parameters, in a computer-aided mode [14], was used the BCN3D Cura 3.4.1 printer software system, that converts the digital model into a set of instructions for the printer. The manufacturing time by the thermoplastic extrusion process of the two housings and the rotor was 5 hours and 34 minutes.…”

Section: Manufacture and Assembly Of Electric Motor Componentsmentioning

confidence: 99%

Design and additive manufacturing of brushless electric motor components

et al. 2021

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The electric motor components are manufactured through the additive process of fused filament fabrication in order to verify the functionality of the electric motor assembly. This process was chosen due to the advantages it confers: fast obtaining of components, low manufacturing costs, no tools required for processing or for moulds manufacturing. Through the fused filament fabrication process, parts with complex geometries, which cannot be obtained by classical machining, can be manufactured. Due to the above-mentioned advantages, this technology is extremely useful for the manufacture and testing of prototypes. The paper aims to manufacture components of a brushless electric motor in order to verify the assembling compatibility and manufacturing accuracy.

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Compressive Behaviour of Lattice Structures Manufactured by Polyjet Technologies

Cited by 15 publications

References 21 publications

A Comparison of Miniature Lattice Structures Produced by Material Extrusion and Vat Photopolymerization Additive Manufacturing

A Comparison of Miniature Lattice Structures Produced by Material Extrusion and Vat Photopolymerization Additive Manufacturing

The State of the Art of Material Jetting—A Critical Review

Design and additive manufacturing of brushless electric motor components

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