Study on Effects of FDM 3D Printing Parameters on Mechanical Properties of Polylactic Acid

Zhu, Yu; Gao, Yingchao; Jiang, Jie; Gu, Hairong; Lv, Shuaishuai; Ni, Hongjun; Wang, Xingxing; Jia, Chaofan

doi:10.1088/1757-899x/688/3/033026

Cited by 28 publications

(25 citation statements)

References 4 publications

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“…While increased PSs are expected to improve strength, there will be a point where speeds are too fast to deposit layers uniformly and without discontinuities. At this point, defects in the print would be expected to reduce strength and stiffness (Yu et al , 2019). Thus, when a wide range of PSs are considered, a quadratic effect on strength and stiffness properties with PS may be expected, exhibiting an optimal speed where layers are held above T g longer and defects are not induced by high speed.…”

Section: Discussionmentioning

confidence: 99%

“…Some work has found print speed (PS) to have a minimal effect (Patibandla and Mian, 2020), yet the time between depositions would be expected to influence cooling and diffusion (Sun et al, 2008). Other work has found PS influences tensile properties, though its influence being positive (Yu et al, 2019) or negative (Abbott et al, 2018) was not unanimously determined and requires further research. Additionally, interaction effects between parameters are seldom considered (Lanzotti et al, 2015) but would be expected between temperature parameters.…”

Section: Introductionmentioning

confidence: 99%

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The influence of fused filament fabrication printing parameters on the mechanical properties of a thermoplastic elastomer

Ford

Pal²,

Brandon³

et al. 2022

RPJ

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Purpose The fused filament fabrication (FFF) process is an additive manufacturing technique used in engineering design. The mechanical properties of parts manufactured by FFF are influenced by the printing parameters. The mechanical properties of rigid thermoplastics for FFF are well defined, while thermoplastic elastomers (TPE) are uncommonly investigated. The purpose of this paper is to investigate the influence of extruder temperature, bed temperature and printing speed on the mechanical properties of a thermoplastic elastomer. Design/methodology/approach Regression models predicting mechanical properties as a function of extruder temperature, bed temperature and printing speed were developed. Tensile specimens were tested according to ASTM D638. A 3×3 full factorial analysis, consisting of 81 experiments and 27 printing conditions was performed, and models were developed in Minitab. Tensile tests verifying the models were conducted at two selected printing conditions to assess predictive capability. Findings Each mechanical property was significantly affected by at least two of the investigated FFF parameters, where printing speed and extruder temperature terms influenced all mechanical properties (p < 0.05). Notably, tensile modulus could be increased by 21%, from 200 to 244 MPa. Verification prints exhibited properties within 10% of the predictions. Not all properties could be maximized together, emphasizing the importance of understanding FFF parameter effects on mechanical properties when making design decisions. Originality/value This work developed a model to assess FFF parameter influence on mechanical properties of a previously unstudied thermoplastic elastomer and made property predictions within 10% accuracy.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The influence of fused filament fabrication printing parameters on the mechanical properties of a thermoplastic elastomer

Ford

Pal²,

Brandon³

et al. 2022

RPJ

View full text Add to dashboard Cite

show abstract

“…Higher mechanical strengths were obtained at lower layers thicknesses as presented by Wu et al (2015). The strength of printed parts based on neat polymers decreased gradually with the increase of printing speed as found by Miazio (2019) and Yu et al (2019), but it could depend on several defects regarding rheological behavior and processability that can mitigate the general variation (Ginoux et al , 2021). The increase of the infill percentage increased the rigidity of printed parts as found by Othman et al (2018) and Rodríguez-Panes et al (2018).…”

Section: Introductionmentioning

confidence: 87%

Multi-physics properties of thermoplastic polyurethane at various fused filament fabrication parameters

Kasmi

Ginoux

Labbé

et al. 2021

RPJ

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Purpose The purpose of this study is to test a flexible polymer with different characteristics compared to other classical polymers mostly used in the additive manufacturing process, and to improve its mechanical properties and microstructure, by modifying different printing parameters, to make it more suitable for various industrial applications. Design/methodology/approach Seven parameters were tested, namely, nozzle temperature, bed temperature, layer thickness, printing speed, flow rate, printing time gap between two successive printed layers and raster orientation. Rheological characterizations were conducted to evaluate the influence of nozzle temperature on the melt viscosity of thermoplastic polyurethane (TPU). The effect of thermal printing parameters on the crystallinity behavior was explored. Tomographic characterizations were realized to measure the porosity and evaluate the internal structure quality of printed specimens. Findings Increases of the nozzle temperature, bed temperature, layer thickness and flow rate had a positive influence on the tensile strength properties of TPU with a reduction of porosity. Higher printing speeds created defects and negatively influenced the strength properties of TPU. An increase in the printing time gap between layers led to poor interlayer adhesion and decreased the tensile strength. Specimens with layers all oriented parallel to the loading direction exhibited superior mechanical properties compared to other raster orientations. Originality/value Thermoplastic elastomers are a unique class of polymers characterized by the combined thermal, chemical and mechanical properties of their elastomer and thermoplastic parts. TPU elastomer, as one of the elastomer families, has found an important position in the bioengineering and three-dimensional printing industry. This study reports a comprehensive study of the impact of additive manufacturing parameters on the properties of TPU.

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“…Kekuatan tekan dari sebuah prostetik yang dicetak dengan menggunakan teknologi 3D Printing dipengaruhi oleh beberapa parameter proses. Zu, et al [1] meneliti pengaruh dari ketebalan lapisan, kerapatan pengisian, dan kecepatan cetak pada kekuatan tekan dari komponen yang terbuat dari material PLA. Hasil penelitian ini menunjukkan bahwa ketebalan lapisan dan kerapatan pengisian mempunyai pengaruh yang sangat signifikan.…”

Section: Pendahuluanunclassified

Identifikasi Jenis Infill Pattern Pada Proses 3d Printing Yang Menghasilkan Hasil Cetak Dengan Kekuatan Tekan Dan Panjang Filamen Yang Optimal

Wijayanto

Handoko

Noel

et al. 2022

JRM

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3D Printing technology becomes a potential solution to build various customized leg prosthetics. As a leg prosthetic must be able to hold a compressive force, it is important to find the compressive strength of the 3D printed part. The aim of this research is to find the infill pattern type which produces the 3D printed part with the highest compressive strength and the shortest filament length. This research uses the Fused Filament Fabrication method to print 24 parts made of Polylactic Acid using 12 different infill patterns with 50% density. All printed parts are designed to replicate the ASTM D695 specimen. After that, the compressive strength of each part is measured by using a Universal Testing Machine. And the filament length of each part is estimated by using slicer software. Based on the experiment result, the infill pattern with the highest compressive strength is the 3D Honeycomb type. However, this infill pattern requires the longest filament length compared to other infill patterns. In order to achieve a similar value of compressive strength with the minimum required material, the Cubic type is recommended to be implemented.

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Study on Effects of FDM 3D Printing Parameters on Mechanical Properties of Polylactic Acid

Cited by 28 publications

References 4 publications

The influence of fused filament fabrication printing parameters on the mechanical properties of a thermoplastic elastomer

The influence of fused filament fabrication printing parameters on the mechanical properties of a thermoplastic elastomer

Multi-physics properties of thermoplastic polyurethane at various fused filament fabrication parameters

Identifikasi Jenis Infill Pattern Pada Proses 3d Printing Yang Menghasilkan Hasil Cetak Dengan Kekuatan Tekan Dan Panjang Filamen Yang Optimal

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