Impact of robotic 3D printing process parameters on interlayer bond strength

Farahbakhsh, Mehdi; Rybkowski, Zofia K.; Zakira, Umme; Kalantar, Negar; Onifade, Ibrahim

doi:10.1016/j.autcon.2022.104478

Cited by 22 publications

(8 citation statements)

References 23 publications

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“…The finished composite's mechanical integrity and quality are determined by many critical factors in the 3-D printing process. Among the most difficult parameters to optimize are [19,20].…”

Section: Optimizing 3-d Printing Process Parametersmentioning

confidence: 99%

“…The number of contours and print speed are shown to be the most significant determinants of the final component of the FDM process's quality [18]. Regularly altering the nozzle's standoff distance can improve the interlayer bond strength under shear by an average of 41% https://doi.org/10.31881/TLR.2024.076 [19]. Tensile strength is mostly determined by changes in infill density [40].…”

Section: Influence Of 3-d Printing Parameters On Mechanical Integrity...mentioning

confidence: 99%

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Development of Green Composite Utilizing Sisal Strands and Sustainable 3-D Printed PLA Layers

Ramaiah,

Tilahun,

Negawo

et al. 2024

Text Leather Rev

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PLA/Sisal hybrid composites have been used in cars and technical textile applications. When utilized in composites, 3-D-printed PLA layers can improve performance and homogeneity. The primary goal of this research was to use sisal and 3-D-printed polylactic acid (PLA) layers to develop a sustainable bio-composite. To enhance the bonding of sisal fibres with the PLA matrix, sisal fibres were given a sodium hydroxide treatment. This would improve the mechanical and thermal properties of composites. Sisal fibre (between 4 wt% and 8 wt%), epoxy concentration (between 85 wt% and 90 wt%), and PLA 3-D printing infilling percentage (between 90 wt% and 100 wt%) were the independent parameters. The Taguchi L8 orthogonal array design was used to make the composite samples. The changes in the amounts of PLA infill, epoxy matrix concentration, and sisal fibre content were considered for test sample development. The optimal settings for improving their tensile, flexural, and impact capabilities were determined by analyzing their signal-to-noise ratio (S/N). The PLA/sisal fibre composite showed a remarkable level of mechanical properties in Sample 8, surpassing those of the other samples. To improve mechanical and thermal properties, the appropriate values for sisal fibre composition, PLA infilling percentage, and epoxy concentration percentage were 8 per cent, 95 per cent, and 85 per cent, respectively. After testing, the tensile (293–295.4 Megapascal) (Mpa), impact (2.73–4.84 Mpa), and flexural strength (188.5–270.4 Mpa) results show that the new composite has better mechanical behaviour properties. Additionally, FTIR, SEM, and DSC experiments were run to examine the composite's structural characteristics. Using less volatile epoxy resin, a sustainable 3-D-printed PLA layer and Sisal fibre bio-composite were developed.

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“…The finished composite's mechanical integrity and quality are determined by many critical factors in the 3-D printing process. Among the most difficult parameters to optimize are [19,20].…”

Section: Optimizing 3-d Printing Process Parametersmentioning

confidence: 99%

Section: Influence Of 3-d Printing Parameters On Mechanical Integrity...mentioning

confidence: 99%

Development of Green Composite Utilizing Sisal Strands and Sustainable 3-D Printed PLA Layers

Ramaiah,

Tilahun,

Negawo

et al. 2024

Text Leather Rev

View full text Add to dashboard Cite

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“…For current printing inks, the corresponding printed samples have low molding accuracy, high firing shrinkage, and low strength, limiting the application scope of this technology in the porcelain field. , However, for the high solid loading paste suitable for manufacturing porcelain, it is a complex and challenging issue to design the porcelain clay paste with an appropriate rheology threshold before printing, avoiding the occurrence of clogs and slumping during printing and retaining its shape after printing . For this issue, some scholars have reported relative findings, such as clay formulation, modifier type and content, − surface modification, − printing parameters, − and solids volume fraction, which are controlled to improve the rheological behavior of the precursor, achieve good printability and physical properties, and prepare high-precision 3D printing samples. Faksawat et al used 3D printing technology to prepare specific bone production with a bending strength below 40 MPa and a volume shrinkage of about 27% at a sintering temperature of 1200 °C, when 95 wt % clay and 5 wt % hydroxyapatite were selected as raw materials.…”

Section: Introductionmentioning

confidence: 99%

Rheology and Printability of a Porcelain Clay Paste for DIW 3D Printing of Ceramics with Complex Geometric Structures

Wu,

Lan,

et al. 2024

ACS Omega

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The modeling of ceramics with complex geometric structures currently depends on the handcrafted mode, with long cycles, high costs, and low efficiency; additive manufacturing (AM) technology can solve this problem well. Herein, the porcelain clay paste was successfully prepared for the direct ink writing (DIW) 3D printing process of ceramics with complex geometric structures, and the effects of sodium citrate (SC) content on the rheological properties and DIW 3D printability of the porcelain clay paste were investigated in detail. The SC has a vital role in the rheological behavior of porcelain clay paste. Adding SC increases the absolute zeta potential and decreases the viscosity of the paste, while a high SC content will lead to a low storage modulus of the paste. The porcelain clay paste with an SC content of 0.05% and a paste solid content of 75% possesses suitable rheological properties and a storage modulus for DIW 3D printing. The as-prepared porcelain clay paste has high DIW 3D printability at a pressure of 0.5 MPa, and a 3D-printed green body with a well-densified structure can be achieved. After being sintered, the 3Dprinted ceramic exhibits high densification and mechanical properties. A green body with complex geometric structures is quickly and precisely modeled by the DIW 3D printing process with the resultant porcelain clay paste as the raw material. This work provides a practical approach to rapidly fabricating ceramics with complex geometrical structures.

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“…Their findings suggest that prolonging the time interval between two layers leads to a reduction in bonding strength, while increasing the nozzle distance has only a limited effect on it. Mehdi’s group [ 29 ] investigated the influence of three process parameters (distance between nodes on the printing path, nozzle-to-substrate distance, and delay time) on the interlayer bonding strength of clay-based materials produced via additive manufacturing. Their study revealed that the periodic manipulation of the nozzle distance functions similarly to compaction in traditional concrete pouring techniques, resulting in a 41% increase in the average interlayer bonding strength under shear stress, ultimately enhancing the quality of the printing.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Printing of Large Ceramic Products and Process Simulation

et al. 2023

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Ceramic 3D printing is a promising technology that overcomes the limitations of traditional ceramic molding. It offers advantages such as refined models, reduced mold manufacturing costs, simplified processes, and automatic operation, which have attracted a growing number of researchers. However, current research tends to focus more on the molding process and print molding quality rather than exploring printing parameters in detail. In this study, we successfully prepared a large-size ceramic blank using screw extrusion stacking printing technology. Subsequent glazing and sintering processes were used to create complex ceramic handicrafts. Additionally, we used modeling and simulation technology to explore the fluid model printed by the printing nozzle at different flow rates. We adjusted two core parameters that affect the printing speed separately: three feed rates were set to be 0.001 m/s, 0.005 m/s, and 0.010 m/s, and three screw speeds were set to be 0.5 r/s, 1.5 r/s, and 2.5 r/s. Through a comparative analysis, we were able to simulate the printing exit speed, which ranged from 0.0751 m/s to 0.6828 m/s. It is evident that these two parameters have a significant impact on the printing exit speed. Our findings show that the extrusion velocity of clay is approximately 700 times faster than the inlet velocity at an inlet velocity of 0.001–0.010 m/s. Furthermore, the screw speed is influenced by the inlet velocity. Overall, our study sheds light on the importance of exploring printing parameters in ceramic 3D printing. By gaining a deeper understanding of the printing process, we can optimize printing parameters and further improve the quality of ceramic 3D printing.

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Impact of robotic 3D printing process parameters on interlayer bond strength

Cited by 22 publications

References 23 publications

Development of Green Composite Utilizing Sisal Strands and Sustainable 3-D Printed PLA Layers

Development of Green Composite Utilizing Sisal Strands and Sustainable 3-D Printed PLA Layers

Rheology and Printability of a Porcelain Clay Paste for DIW 3D Printing of Ceramics with Complex Geometric Structures

Three-Dimensional Printing of Large Ceramic Products and Process Simulation

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