An Experimental Effort on Impact Properties of Polylactic Acid Samples Manufactured by Additive Manufacturing

Bolat, Çağın; Ergene, Berkay

doi:10.29130/dubited.1075259

Cited by 5 publications

(5 citation statements)

References 34 publications

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“…On the other hand, the infill density plays a significant role in determining the mechanical properties of 3D printed structures. Infill density optimization is meant to specify the solidity of the structure, where objects with 50% infill density (partially solid) or lower can still provide the optimal needed mechanical properties while being cost-effective and easy to print [69][70]. In a recent study, Bolat and Ergene [70] explored the structural properties of PLA parts produced via FDM.…”

Section: Infill Structural Optimizationmentioning

confidence: 99%

“…Infill density optimization is meant to specify the solidity of the structure, where objects with 50% infill density (partially solid) or lower can still provide the optimal needed mechanical properties while being cost-effective and easy to print [69][70]. In a recent study, Bolat and Ergene [70] explored the structural properties of PLA parts produced via FDM. The study mainly examined the impact of infill density on PLA behavior and found that an infill density of 40% had the lowest hardness and surface roughness, which increased with increasing the infill density (70% and 100%) [71].…”

Section: Infill Structural Optimizationmentioning

confidence: 99%

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3D Printing for wind turbine blade manufacturing: a review of materials, design optimization, and challenges

Zarzoor,

Jaber,

Shandookh

2024

ETJ

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3D printing optimizes wind turbine blades for greater cost-effectiveness and durability.• The review emphasizes design optimization to enhance aerodynamics and structural efficiency. • Challenges such as material limitations and the need for structural integrity are identified. • AI and hybrid manufacturing are proposed to address these limitations and reduce costs.Wind energy has become an easy-to-harness source by converting captured wind currents into electrical energy. Powerful and customizable wind turbines are used to convert wind energy efficiently. However, wind turbine development in terms of structure is still an active area of research aiming at efficiently building capable and long-lasting turbines. Additive manufacturing technology, particularly 3D printing, has revolutionized multiple industries, including its potential to create wind turbine blades with high cost-effectiveness and optimizable shapes and rigid structures. In this review, various 3D printing-based techniques, including Fused Deposition Modelling (FDM), Continuous Fiber Reinforcement (CFR), Stereolithography (SLA), and 3D Printing-enhanced Large-Scale Additive Manufacturing (LSAM), are examined in detail for complex and large-scale wind turbine blade production. Materials used in 3D printing wind turbine blades, such as thermoplastic composites, epoxy resins, and fiber-reinforced polymers, are assessed with a focus on their mechanical strength, durability, and environmental considerations. Furthermore, the importance of design optimization and customization for wind turbine blades, including aerodynamic and structural design optimization, is emphasized. Customization for site-specific conditions, infill structural optimization, and infill printing speed and cost are also discussed.The review highlights the importance of structural optimization in developing efficient and cost-effective 3D-printed wind turbine blades, customization for sitespecific conditions, and infill structure. The review also mentions these technologies' challenges, such as material limitations, surface finish quality, size limitations, and structural integrity. Therefore, addressing these challenges to utilize these technologies' potential fully is crucial.

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Section: Infill Structural Optimizationmentioning

confidence: 99%

Section: Infill Structural Optimizationmentioning

confidence: 99%

3D Printing for wind turbine blade manufacturing: a review of materials, design optimization, and challenges

Zarzoor,

Jaber,

Shandookh

2024

ETJ

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“…PLA finds extensive use in several medical instruments, including implants, dentistry, drug carriers, and orthopedic interventions, and in food wrapping boxes. The favor of PLA filaments in 3D printing applications is attributed to the ease of printing with these filaments [ 11 , 12 , 13 ]. Nevertheless, PLA filaments employed in FDM technology have shortcomings that adversely impact brittleness, abrasion resistance, fracture toughness, and impact resistance.…”

Section: Introductionmentioning

confidence: 99%

“…PLA finds extensive use in several medical instruments, including implants, dentistry, drug carriers, and orthopedic interventions, and in food wrapping boxes. The favor of PLA filaments in 3D printing applications is attributed to the ease of printing with these filaments [11][12][13]. Nevertheless, correlation between infill density and tensile strength, while a reduction in impact strength was observed with varying infill density.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Charpy Impact Strength of Tough PLA Samples Produced by 3D Printing Using the Taguchi Method

Tunçel

2024

Polymers

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This research employs the Taguchi method and analysis of variance (ANOVA) to investigate, analyze, and optimize the impact strength of tough polylactic acid (PLA) material produced through fused deposition modeling (FDM). This study explores the effect of key printing parameters—specifically, infill density, raster angle, layer height, and print speed—on Charpy impact strength. Utilizing a Taguchi L16 orthogonal array experimental design, the parameters are varied within defined ranges. The results, analyzed through signal-to-noise (S/N) ratios and ANOVA, reveal that infill density has the most substantial impact on Charpy impact strength, followed by print speed, layer height, and raster angle. ANOVA identifies infill density and print speed as the most influential factors, contributing 38.93% and 36.51%, respectively. A regression model was formulated and this model predicted the impact strength with high accuracy (R2 = 98.16%). The optimized parameter set obtained through the Taguchi method, namely, a 100% infill density, 45/−45° raster angle, 0.25 mm layer height, and 75 mm/s print speed, enhances the impact strength by 1.39% compared to the experimental design, resulting in an impact strength of 38.54 kJ/m2. Validation experiments confirmed the effectiveness of the optimized parameters.

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“…It is worth noting that one of the important manufacturing parameters is the infill density and it was proved that the higher infill density resulted in higher impact properties. Thus, this parameter should be considered in different aspects of manufacturing processes 25 .…”

Section: Introductionmentioning

confidence: 99%

Effects of testing speed on the tensile and mode I fracture behavior of specimens printed through the Fused Deposition Modeling technique

Zhan,

Cai,

Hasani

2024

Sci Rep

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Additive Manufacturing (AM) processes are known as revolutionary manufacturing processes that fabricate a part using a 3D model layer upon layer. These techniques gained more attention from various industries due to their advantages like low waste material. Also, these processes can produce any part with high degrees of complexity in a short period of time. The Fused Deposition Modeling (FDM) process is a material extrusion-based technique which works by extruding a fine molten polymeric filament through a heated nozzle on the heated platform named printer bed. In this method, some important manufacturing parameters play a crucial role in controlling the mechanical properties and quality of the final fabricated part. However, all printed specimens through the FDM process should be tested based on the standards under some critical circumstances. Thus, in the current research paper, five and three test speeds are considered in tensile and fracture testing procedures, respectively to evaluate how these speeds can affect the mechanical and mode I fracture properties. Also, as the FDM specimens present elastic–plastic behavior, the critical value of J-integral is assumed as a fracture assessment and calculated from the finite element analysis. Among the mechanical properties, ultimate tensile strength is affected significantly by the test speed. For instance, the ultimate tensile strength of FDM specimens is 39.02, 38.58, 42.33, 48.09, and 52.11 for test speeds of 2, 4, 6, 8, and 10 mm/min, respectively. But vice-versa results are detected for the mode I fracture behavior and corresponding values of J for the FDM-PLA specimens. Finally, experimental and numerical results together with comprehensive discussions about the considered speeds and obtained results are reported.

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An Experimental Effort on Impact Properties of Polylactic Acid Samples Manufactured by Additive Manufacturing

Cited by 5 publications

References 34 publications

3D Printing for wind turbine blade manufacturing: a review of materials, design optimization, and challenges

3D Printing for wind turbine blade manufacturing: a review of materials, design optimization, and challenges

Optimization of Charpy Impact Strength of Tough PLA Samples Produced by 3D Printing Using the Taguchi Method

Effects of testing speed on the tensile and mode I fracture behavior of specimens printed through the Fused Deposition Modeling technique

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