Mechanical Properties for 3D Printing of Polymers through Fused Deposition Modelling

Kumar, Brijesh; Raina, Ankush; Singh, Ravi Pratap; Haq, Mir Irfan Ul

doi:10.1002/9781119755074.ch27

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…3D printing has been known for its ability in creating complex geometries at low costs, especially for rapid prototyping applications (Kafle et al, 2021). Nevertheless, FDM methodologies are still challenging as their exterior surface quality and internal structure (Kumar et al, 2022) makes these products difficult to be standardized for mechanical applications (Wickramasinghe et al, 2020). Moreover, because of the technology, they result in low productivity (Raza et al, 2022) while they prove to be solid for low-cost end-use parts and small-lot production (Rouf et al, 2022).…”

Section: Introduction To Fdm For the Realization Of Functional Partsmentioning

confidence: 99%

Design and development of a peristaltic pump for constant flow applications

Ferretti,

Pagliari,

Montalti

et al. 2023

Front. Mech. Eng.

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In wide-ranging areas, including hydraulics, biomedical, automotive, and aerospace, there is often a need to move a fluid with a constant flow rate. This is difficult to achieve with any type of pump and usually other elements are inserted to regularize the output. This study focused on the peristaltic pump because there are few studies on it and it has some interesting features, such as extreme simplicity, a small number of components, and the extreme compactness of the whole system. The first part of this study is focused on analyzing the classical geometry of the peristaltic pump to understand the origin of the discontinuity in the flow rate; the second part proposes a new geometry that mitigates the flow irregularity by more than 200%. In this way, it is possible to use it in all the sectors where a constant flow rate is required but where insulation between the fluid and the machine is required. Together with the flow study, an analysis of how the main geometric parameters affect the operation of the pump is provided, complete with explanatory graphs and tables. A prototype made through additive manufacturing technologies is also proposed.

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Section: Introduction To Fdm For the Realization Of Functional Partsmentioning

confidence: 99%

Design and development of a peristaltic pump for constant flow applications

Ferretti,

Pagliari,

Montalti

et al. 2023

Front. Mech. Eng.

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“…The popularity of FRPs can be attributed to their high stiffness, specific strength and tailor‐made material characteristics. Due to their exceptional qualities, FRPs are widely used in the construction, 1 packaging, 2 automobiles, 3 sports, 4 healthcare, 5 and defense industries 6 . However, the usage of synthetic materials made the reuse or recycling difficult to an extent that the FRPs were usually dumped or incinerated in heaps and bounds.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical characteristics of polylactic acid/tamarind kernel filler green composite filament for 3D printing

Nagarjun,

Kanchana,

Rajeshkumar

et al. 2023

Polymer Composites

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The significance and interest of printing green composites in three dimensions have recently grown, especially in light of the possibility of reusing waste to produce green fillers that can reduce the cost of biopolymers without compromising their processability and performance outcomes from a mechanical and environmental perspective. In the current work, the kernel powder obtained from the seeds of Tamarindus indica (TI) was added to polylactic acid (PLA) and extruded as a filament in the single screw extruder. It was then printed using an open source Fused Deposition Modeling printer and investigated for its density, mechanical, surface, and morphological characteristics. It was found that the composite performed better when the filler concentration was maintained at 2%, but when it went beyond that, the performance depreciated because of the rapid rise in material voids. When compared with a neat PLA matrix, 2% TI filler offered better overall strength, with increments of 12.64%, 19.87%, and 15.57% in tensile, compression, and flexural strength, respectively. The addition of TI filler was found to promote crystallization within the PLA matrix, leading to a higher degree of crystallinity which have contributed to higher strength. The morphological study demonstrated that the occurrence of uniform filler distribution and inter‐layer randomized bonding at 2% TI/PLA offered superior strength, whereas at higher TI concentrations it led to pullout and delamination. On the other hand, the hardness of the composite increased proportionally to the concentration of the fillers.

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