Microwave-assisted fracture toughness improvement in additively manufactured polylactic acid–copper composite

Haque, Nazmul; Azarfam, Mohamadreza Youssefi; Noori, Hadi

doi:10.1007/s10853-021-06019-5

Cited by 4 publications

(1 citation statement)

References 33 publications

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“…Specimen exposure to microwaves with 3 kW of power for 75 s has been observed to result in a 37% increase in maximal tensile fracture. The post-heating enhanced polymer crystallinity decreased micro voids and residual stresses and increased the composites’ fracture toughness [ 13 ]. Inclusion of each filler will induce different changes in the base materials.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Printing Process Variables and the Effect of Post-Heat Treatments on the Mechanical Properties of Extruded Polylactic Acid–Aluminum Composites

Ganapathy,

Sakthivel,

Kandasamy

et al. 2023

Polymers

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Polymer extrusions are employed in the fabrication of crucial parts for automotive, aerospace, and other mechanical applications. The use of fillers and microfibers is contributing to the advancement of material extrusion polymers. In order to enhance their mechanical characteristics, printed materials undergo a post-heating process utilizing microwaves. Specimens were fabricated using polylactic acid filaments containing 2 wt% aluminum. Two sets of specimens were fabricated and subjected to testing in order to evaluate the features of extruded specimens and specimens that underwent post-heating. In terms of mechanical performance, specimens subjected to post-heating exhibited superior results compared to specimens merely subjected to extrusion. The tensile, flexural, and Shore D hardness properties of the specimens exhibited improvements of 5.07, 6.16, and 1.32%, respectively, after being subjected to heating. Furthermore, the wear rate decreased by 13.58 percent. The results of the regression analysis indicate that the print angle and the air gap exhibit the greatest influence on the observed responses. The validation test outcomes exhibit a high level of concordance with the predicted findings. The mechanical and surface properties of components extruded with filler-added material are enhanced by subsequent heating.

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Section: Introductionmentioning

confidence: 99%

Optimization of Printing Process Variables and the Effect of Post-Heat Treatments on the Mechanical Properties of Extruded Polylactic Acid–Aluminum Composites

Ganapathy,

Sakthivel,

Kandasamy

et al. 2023

Polymers

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Effect of protective atmosphere and secondary treatment on filament fusion of polylactic acid composites prepared by fused deposition modeling

Ding

Fan

Zhao

2021

J of Applied Polymer Sci

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It is well known that poor interlayer adhesion from limited diffusion and entanglement of chains across the interlayer interface is the main reason for anisotropy of mechanical properties of 3D printed parts prepared by fused deposition modeling (FDM). The present study demonstrates the effects of a protective atmosphere and secondary treatment to improve fusion between filaments. The experimental results demonstrate that the mechanical properties of the parts with nitrogen protection increase by about 100% in the direction of filament accumulation while the oxidation degree of the surface of the filament drops by 9%, which indicates that the bond strength between the filaments is improved. And tensile strength is increased by about 10%-20% in the direction of filament accumulation after heat treatment and microwave treatment.

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From prototyping to functional parts: A review of mechanical reinforcing procedures for polymeric parts fabricated via material extrusion

Sadeghian,

Ayatollahi,

Khosravani

et al. 2024

Journal of Manufacturing Processes

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Microwave-assisted fracture toughness improvement in additively manufactured polylactic acid–copper composite

Cited by 4 publications

References 33 publications

Optimization of Printing Process Variables and the Effect of Post-Heat Treatments on the Mechanical Properties of Extruded Polylactic Acid–Aluminum Composites

Optimization of Printing Process Variables and the Effect of Post-Heat Treatments on the Mechanical Properties of Extruded Polylactic Acid–Aluminum Composites

Effect of protective atmosphere and secondary treatment on filament fusion of polylactic acid composites prepared by fused deposition modeling

From prototyping to functional parts: A review of mechanical reinforcing procedures for polymeric parts fabricated via material extrusion

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