Effect of nozzle vibration at different frequencies on surface structures and tensile properties of PLA parts printed by FDM

Chen, Fuhui; Xu, Qian; Huang, Fuwen; Xie, Zhen; Fang, Hui

doi:10.1016/j.matlet.2022.132612

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…Figures 12 and 13 show consistently good bonding of the individual layers. The assumption of Chen et al that poor interlayer bonding occurs when using FDM technology, leading to anisotropy in mechanical properties, is not confirmed [33]. Figures 11 and 12A,B show the porosity that usually occurs in nonideal manufacturing during 3D printing and in materials with natural fillers [30,34].…”

Section: Sem Analysis Of Tested Materialsmentioning

confidence: 93%

Effect of Infill Density in FDM 3D Printing on Low-Cycle Stress of Bamboo-Filled PLA-Based Material

et al. 2022

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In this paper, the fatigue behavior of polylactic acid (PLA) material with bamboo filler printed by 3D additive printing using fused deposition modelling (FDM) technology at different infill densities and print nozzle diameters is investigated. The mechanical test results are supported by the findings from SEM image analysis. The fatigue behavior was tested at four consecutive 250 cycles at loads ranging from 5 to 20, 30, 40, and 50% based on the limits found in the static tensile test. The results of the static tensile and low-cycle fatigue tests confirmed significant effects of infill density of 60%, 80%, and 100% on the tensile strength of the tested specimens. In particular, the research results show a significant effect of infill density on the fatigue properties of the tested materials. The influence of cyclic tests resulted in the strengthening of the tested material, and at the same time, its viscoelastic behavior was manifested. SEM analysis of the fracture surface confirmed a good interaction between the PLA matrix and the bamboo-based filler using nozzle diameters of 0.4 and 0.6 mm and infill densities of 60%, 80%, and 100%. Low-cycle testing showed no reductions in the mechanical properties and fatigue lives of the 3D printed samples.

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Section: Sem Analysis Of Tested Materialsmentioning

confidence: 93%

Effect of Infill Density in FDM 3D Printing on Low-Cycle Stress of Bamboo-Filled PLA-Based Material

et al. 2022

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“…Hasil ditemukan bahwa orientasi dengan sudut pencetakan 0 o dan jarak layer lebih rendah menunjukkan kekuatan tarik tertinggi [24]. Selain itu, pengaruh lubang nozzle untuk mengetahui nilai pressure drop dan vibrasi nozzle mempengaruhi struktur permukaan dan kekuatan tarik pada pencetakan 3D FDM berbahan PLA [25][26]. Orientasi pencetakan juga telah diselidiki untuk mengetahui sifat mekanik dari hasil cetakan [27].…”

Section: Gambar 1 Skema Fdm 3d Printerunclassified

Analisa Parameter Pencetakan Terhadap Sifat Mekanik Polylactic Acid Menggunakan Mesin Cetak 3 Dimensi Fused Deposition Modelling

Saefudin,

Cahyandari,

Afif

et al. 2023

j.rekayasa.mesin.

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Additive manufacturing dengan metode fused deposition modelling (FDM) banyak diminati dan terus dikembangkan dalam berbagai aplikasi industri. Pada penelitian ini Polylactic Acid (PLA) dicetak menggunakan printer 3D FDM dengan berbagai parameter untuk dijadikan sampel uji tarik. Parameter pencetakan meliputi kepadatan isi, tinggi lapisan, suhu cetak, pola isi, sudut cetak dan orientasi untuk mendapatkan dan menentukan hasil kekuatan tarik terbaik. Pencetakan parameter ini dibahas secara rinci. Hasil percobaan pengaruh variasi pencetakan menunjukkan adanya perbedaan kekuatan tarik PLA.

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“…Ultrasonic vibration during FFF printing was a non-chemical/non-thermal process, and there were no adverse effects on the final product [11]. Chen developed a printer head that vibrated the nozzle vertically to improve the vertical tensile strength of FFF parts [25]. The vibration in the vertical direction reduced the viscosity of the material and brought downward inertial force, enhancing the diffusion of the polymer chains and strengthening the inter-layer bonding strength and mechanical properties of FFF parts.…”

Section: Introductionmentioning

confidence: 99%

Improving the Mechanical Properties of CCFRPLA by Enhancing the Interface Binding Energy and Strengthening the Anti-Separation Ability of a PLA Matrix

Wang

et al. 2023

Polymers

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Additive manufacturing (AM) can produce almost any product shape through layered stacking. The usability of continuous fiber-reinforced polymers (CFRP) fabricated by AM, however, is restricted owing to the limitations of no reinforcing fibers in the lay-up direction and weak interface bonding between the fibers and matrix. This study presents molecular dynamics in conjunction with experiments to explore how ultrasonic vibration enhances the performance of continuous carbon fiber-reinforced polylactic acid (CCFRPLA). Ultrasonic vibration improves the mobility of PLA matrix molecular chains by causing alternative fractures of chains, promoting crosslinking infiltration among polymer chains, and facilitating interactions between carbon fibers and the matrix. The increase in entanglement density and conformational changes enhanced the density of the PLA matrix and strengthened its anti-separation ability. In addition, ultrasonic vibration shortens the distance between the molecules of the fiber and matrix, improving the van der Waals force and thus promoting the interface binding energy between them, which ultimately achieves an overall improvement in the performance of CCFRPLA. The bending strength and interlaminar shear strength of the specimen treated with 20 W ultrasonic vibration reached 111.5 MPa and 10.16 MPa, respectively, 33.11% and 21.5% higher than those of the untreated specimen, consistent with the molecular dynamics simulations, and confirmed the effectiveness of ultrasonic vibration in improving the flexural and interlaminar properties of the CCFRPLA.

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Effect of nozzle vibration at different frequencies on surface structures and tensile properties of PLA parts printed by FDM

Cited by 9 publications

References 6 publications

Effect of Infill Density in FDM 3D Printing on Low-Cycle Stress of Bamboo-Filled PLA-Based Material

Effect of Infill Density in FDM 3D Printing on Low-Cycle Stress of Bamboo-Filled PLA-Based Material

Analisa Parameter Pencetakan Terhadap Sifat Mekanik Polylactic Acid Menggunakan Mesin Cetak 3 Dimensi Fused Deposition Modelling

Improving the Mechanical Properties of CCFRPLA by Enhancing the Interface Binding Energy and Strengthening the Anti-Separation Ability of a PLA Matrix

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