Effects of cold plasma treatment on interlayer bonding strength in FFF process

Shih, Chin-Cheng; Burnette, Matthew; Staack, David; Wang, Jyhwen; Tai, Bruce L.

doi:10.1016/j.addma.2018.11.005

Cited by 18 publications

(9 citation statements)

References 27 publications

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“…As it was mentioned earlier, mechanical anisotropy in parts printed by FDM could go as high as 50% depending on the layer size such as thickness, width, or diameter. Reports showed that FDM produced parts have also weaker thermal and electrical conductivity properties towards build orientation than other orientations [ 27 , 28 , 29 , 30 ].…”

Section: Materials Anisotropy In Additively Manufactured Polymer Partsmentioning

confidence: 99%

“…Although the deposition lines can be integrated into adjacent lines, inter and intralayer deformation occurs in the form of cracks between the cylindrical lines. The extruded material cools quickly from melting to printer chamber temperature, resulting in the development of inner stresses responsible for the weak bond between two deposition lines, which causes the delamination or part fabrication failure [ 1 , 17 , 30 ]. This structure inhomogeneity results in impaired mechanical strengths in the part produced via FDM.…”

Section: Materials Anisotropy In Additively Manufactured Polymer Partsmentioning

confidence: 99%

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Material Anisotropy in Additively Manufactured Polymers and Polymer Composites: A Review

Zohdi

Yang

2021

Polymers

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Additive manufacturing (AM) is a sustainable and innovative manufacturing technology to fabricate products with specific properties and complex shapes for additive manufacturable materials including polymers, steels, titanium, copper, ceramics, composites, etc. This technology can well facilitate consumer needs on products with complex geometry and shape, high strength and lightweight. It is sustainable with having a layer-by-layer manufacturing process contrary to the traditional material removal technology—subtractive manufacturing. However, there are still challenges on the AM technologies, which created barriers for their further applications in engineering fields. For example, materials properties including mechanical, electrical, and thermal properties of the additively manufactured products are greatly affected by using different ways of AM methods and it was found as the material anisotropy phenomenon. In this study, a detailed literature review is conducted to investigate research work conducted on the material anisotropy phenomenon of additively manufactured materials. Based on research findings on material anisotropy phenomenon reported in the literature, this review paper aims to understand the nature of this phenomenon, address main factors and parameters influencing its severity on thermal, electrical and mechanical properties of 3D printed parts, and also, explore potential methods to minimise or mitigate this unwanted anisotropy. The outcomes of this study would be able to shed a light on improving additive manufacturing technologies and material properties of additively manufactured materials.

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Section: Materials Anisotropy In Additively Manufactured Polymer Partsmentioning

confidence: 99%

Section: Materials Anisotropy In Additively Manufactured Polymer Partsmentioning

confidence: 99%

Material Anisotropy in Additively Manufactured Polymers and Polymer Composites: A Review

Zohdi

Yang

2021

Polymers

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“…With the rapid development of 3D printing technology, the application of 3D printing technology is increasingly extensive [1][2][3]. Due to the demand for individuation, color 3D printing technology has developed rapidly recently [4,5].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Vibration Characteristics of Fused Deposition Modeling Color 3D Printer Based on Modal and Power Spectrum Method

Zhang

Qin

et al. 2019

Applied Sciences

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To improve the accuracy of the Fused Deposition Modeling (FDM) color 3D printer in printing color pieces, the vibration characteristics were studied. Firstly, the models of the FDM color 3D printer were qualitatively simplified by mechanics theory to provide theoretical support for dynamic characteristics of the structure, and the finite element modal analysis was performed by the ANSYS (It is an engineering simulation and 3D design software) Workbench to obtain the natural frequency and mode shape displacement of the FDM color 3D printer. Then, the power spectrum of the vibration signal of the previous FDM color 3D printer was measured through frequency domain analysis, and the resonance positions of the 3D printer were obtained by comparing the finite element analysis with experimental analysis. Finally, the design of the color 3D printer was optimized based on the analysis. The results indicate that the optimized scheme can effectively improve the resonance characteristics of the device and reduce the overall modal displacement. The actual experiment of the 3D printer demonstrates that the accuracy of the optimized device has been improved, which has crucial reference significance for the development of the FDM color 3D printer.

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“…There are many approaches designed, many of them requiring hardware modifications in the 3D printers. Thus, [40] suggests low-temperature plasma to activate the sublayer. In [41] a laser is proposed to preheat the filament, and in [42] the laser was used to preheat the sublayer, and in [43] the sublayer was heated with infrared source.…”

Section: Introductionmentioning

confidence: 99%

Desktop Fabrication of Strong Poly (Lactic Acid) Parts: FFF Process Parameters Tuning

Ve¹,

Tavitov²,

Urzhumtcev³

et al. 2019

Preprint

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Current study aims to evaluate the possibilities to increase part strength by optimizing the FFF process parameters. Five different CAD models of parts with same coupling dimensions but different shape inherited from a recent study were converted into test samples with Ultimaker 2 3D printer. The main measure of success was the sample strength, defined as the load at which the first crack in the stressed area of the part appeared. Three different modifications to the FFF process with verified positive effect on interlayer bonding were applied. First modification included raising the extrusion temperature and disabling printed part cooling. Second modification consisted in reduction of the layer thickness. Third modification combined the effects of the first and the second ones. For four out of five shapes tested applied process modifications resulted in significant strengthening of the part. The shape that exhibited the best results was subject to further research by creating special printing mode. The mode included fine-tuning of three technological parameters on different stages of the part fabrication. As result it was possible to increase the part strength by 108% only by tuning printing parameters of the best shape designed with increasing its weight by 8%.

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Effects of cold plasma treatment on interlayer bonding strength in FFF process

Cited by 18 publications

References 27 publications

Material Anisotropy in Additively Manufactured Polymers and Polymer Composites: A Review

Material Anisotropy in Additively Manufactured Polymers and Polymer Composites: A Review

Optimization of Vibration Characteristics of Fused Deposition Modeling Color 3D Printer Based on Modal and Power Spectrum Method

Desktop Fabrication of Strong Poly (Lactic Acid) Parts: FFF Process Parameters Tuning

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