Investigations for tensile, compressive and morphological properties of 3D printed functional prototypes of PLA-PEKK-HAp-CS

Singh, Rupinder; Singh, Gurchetan; Singh, Jaskaran; Kumar, Ranvijay

doi:10.1177/0892705719870595

Cited by 30 publications

(23 citation statements)

References 34 publications

(34 reference statements)

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“…Some researchers outlined that increase of infill density with sufficient no. of perimeters for outer wall, the compressive strength of the specimen increases significantly [13]. It has been observed that performance of 3D printed specimen is influenced by the forced air-cooling setup attached to the print head [14].…”

Section: Introductionmentioning

confidence: 99%

“…The literature reveals that the use of biodegradable/green waste enhances the mechanical properties and reduces the environmental pollution as well as cost [25][26][27][28][29][30][31]. But hitherto little has been reported on the use of the almond skin in powder form for enhancement of the compressive properties [13,[31][32][33][34]. In this study, composite of PLA and almond skin powder was subjected to compression test (as per ASTM D695), surface hardness (Shore D) investigation for possible use as biomedical scaffold as an extension of previously reported study [35] on preparation of feed stock filament for FFF.…”

Section: Introductionmentioning

confidence: 99%

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On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

Singh

Kumar

Preet

2020

Mater. Res. Express

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This paper reports the compressive, morphological and surface hardness properties of almond skin powder reinforced polylactic acid (PLA) matrix based 3D printed functional prototypes prepared by fused filament fabrication (FFF) as biomedical scaffolds. In this study the 3D printed functional parts were subjected to compression, morphological and Shore D hardness investigations. The results of this study highlight that maximum compressive strength at peak (37.712 MPa), maximum compressive strength at break (33.93 MPa) and Young's modulus (387.80 MPa) was observed in case of sample printed at infill density 100%, infill angle 90°and infill speed 70 mm s −1 (as per ASTM D695). The maximum modulus of toughness as 3.47 MPa was observed in the case of printed sample at infill density 60%, infill angle 60°and infill speed 70 mm s −1 . The results are supported by optical photomicrographs and Shore D hardness. Finally mathematical equations were developed (as empirical model) to predict different mechanical properties (based upon historical data approach) supported by Taguchi analysis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

Singh

Kumar

Preet

2020

Mater. Res. Express

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“…Step 7: Formulate separation measures (S m ) with the help of Euclidean distance, as given in Equations (9) and (10):…”

Section: Equal Weights Methodsmentioning

confidence: 99%

“…[9] The fused deposition modeling (FDM) approach for fabrication of biomedical scaffolds resulted into 15% to 60% reduction of yield strength as compared to hot pressed scaffolds. [10] Further, the 3D printing of a PLA-based scaffold system has achieved maximum compressive strength (CS) at 100% infill speed, 50 mm/min infill speed, and three numbers of external perimeters. [11] It has been ascertained that PLA mixed with 5% wt/vol hydrogel concentration has given stable results of rheology and minimum changes of pH value over scaffolds degradation, promised a good scaffolds for implantation.…”

Section: Introductionmentioning

confidence: 99%

Characterization of three‐dimensional printed thermal‐stimulus polylactic acid‐hydroxyapatite‐based shape memory scaffolds

Singh

Prakash

et al. 2020

Polymer Composites

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The shape memory polymers have attained huge attention as smart materials owing to their enormous benefits in the context of the common class of thermoplastics. In this study, novel thermal‐stimulus‐based hydroxyapatite (HA) reinforced polylactic acid (PLA) scaffolds have been developed through three‐dimensional (3D) printing technology. Initially, the effect of various processing parameters, such as the proportion of HA in PLA and infill density, and level of stimulating temperature, on tensile, flexural, and compression strength of the developed composite scaffolds have been studied to understand their effects, through statistically assisted single and multiobjective optimization techniques. The shape recovery factor of the prestrained composite scaffolds has been assessed by providing thermal‐stimulus. Finally, the biological performance of the developed scaffolds has been evaluated through in vitro cell culture and wettability analysis. The morphological study of the composite scaffolds, at different stages, has been performed for understanding the effect of processing parameters on the mechanical, shape recovery effect, and biological responses. Overall, the results of the study highlighted that the 3D printed scaffolds possessed nearly 95.77% shape memory effect along with desirable mechanical, in vitro biocompatibility, and hydrophilic morphology suitable to be a potential candidate of fabricating customized biomedical devices with activated shape recovery abilities.

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“…Three-dimensional printers are machines used in FFF production. In the printing process, a solid filament, such as polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS), is melted and extruded from a nozzle [1,[12][13][14]. During the printing process in 3D printers, the filament is left layer by layer as it diffuses with the effect of the temperature [15,16].…”

Section: Introductionmentioning

confidence: 99%

The Effects on Thermal Efficiency of Yttria-Stabilized Zirconia and Lanthanum Zirconate-Based Thermal Barrier Coatings on Aluminum Heating Block for 3D Printer

Demir

2021

Coatings

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Fused filament fabrication is an important additive manufacturing method, for which 3D printers are the most commonly used printing tools. In this method, there are many factors that affect the printing quality, chief among which is temperature. The fusion temperature of the material is created by an aluminum heating block in the extruder. Stability and a constant temperature for the aluminum heating block are inevitable requirements for print quality. This study aims to use the thermal barrier coating method to increase the thermal efficiency and stability of the aluminum heating block by reducing heat loss. Furthermore, it aims to perform steady-state thermal analysis using finite element analysis software. The analyses are carried out in stagnant air environment and at the printing temperature of acrylonitrile butadiene styrene material. In order to examine the effects of different coating materials, blocks coated with two different coating materials, as well as uncoated blocks, were used in the analyses. The coating made with yttria-stabilized zirconia and pyrochlore-type lanthanum zirconate materials, together with the NiCRAl bond layer, prevent temperature fluctuation by preventing heat loss. The effects of the coating method on average heat flux density, temperature distribution of blocks, and temperature distribution of the filament tube hole were investigated. Additionally, changes in flow velocity were determined by examining the effects of the thermal barrier coating method on temperature distribution. The average heat flux density in the coated blocks decreased by 10.258%. Throughout the investigation, the temperature distributions in the coated blocks became homogeneous. It was also observed that both coating materials produce the same effect. This article performs a steady-state thermal analysis of a conventional model and thermal-barrier-coated models to increase print quality by reducing heat loss from the aluminum heating block.

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Investigations for tensile, compressive and morphological properties of 3D printed functional prototypes of PLA-PEKK-HAp-CS

Cited by 30 publications

References 34 publications

On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

Characterization of three‐dimensional printed thermal‐stimulus polylactic acid‐hydroxyapatite‐based shape memory scaffolds

The Effects on Thermal Efficiency of Yttria-Stabilized Zirconia and Lanthanum Zirconate-Based Thermal Barrier Coatings on Aluminum Heating Block for 3D Printer

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