Comparison of mechanical properties of 3D-printed and compression-molded wood-polylactic acid (PLA) composites

Narlıoğlu, Nasır

doi:10.15376/biores.17.2.3291-3302

Cited by 8 publications

(3 citation statements)

References 19 publications

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“…A universal mechanical testing machine (AG-X, 20 kN, Shimadzu, Kyoto, Japan) was used to test the bending strength of groups of PLA models, and the reference standard was ISO 178-2019. The ambient temperature was 20 °C, the support span was 140 mm, and the loading speed was 2 mm/min (Narlıoğlu 2022).…”

Section: Performance Testmentioning

confidence: 99%

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Wang,

Yu,

Jiang

et al. 2024

BioRes

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The top and bottom shells of fused deposition 3D-printed PLA models are exposed to the highest stresses. To improve the bending performance of PLA models under three-point bending conditions, the models were strengthened by a selective enhancement method. Several sets of PLA models were fabricated using FDM technology, and three-point bending experiments were conducted to compare the bending strength of PLA models when the layer height, top/bottom shell thickness, and extrusion rate were varied. The bending strength of the PLA models increased as the layer height of the top/bottom shell decreased, the thickness increased, and the extrusion rate increased. The average bending strength of the PLA models after selective enhancement was 84.4 MPa, and the average bending modulus of elasticity was 0.816 GPa, which were higher than the average bending strength of 68.6 MPa and the average bending modulus of elasticity of 0.736 GPa of the conventional groups. These results indicated that the selective enhancement method improved the bending performance of 3D-printed PLA models, and it also provided a reference for the improvement of the mechanical properties of the 3D-printed models with cellulose composite reinforced materials.

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Section: Performance Testmentioning

confidence: 99%

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Wang,

Yu,

Jiang

et al. 2024

BioRes

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“…In the study conducted by Narlıo glu, it was mentioned that the glass transition temperature (Tg) of Wood-filled PLA is 60.5 C, and the melting temperature (Tm) is $150 C. 62 According to this information, the temperatures that occurred in the triangle pin geometry are higher than the Tm point. This leads to excessive plasticization of the material resulting in a decrease in weld strength.…”

Section: Thermal Analysis During Fswmentioning

confidence: 99%

Effect of process parameters on the mechanical behavior of additively manufactured and FSW joined PLA wood sheets

Koçar,

Anaç,

Palaniappan

et al. 2023

Polymer Composites

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Friction stir welding (FSW), a solid‐state joining method, is an innovative technique widely employed in the welding of thermoplastics, with broad application areas such as the automotive and aerospace industries. Due to its inherent advantages, including ease of processing, biodegradability, and printability, polylactic acid (PLA) and its derivatives are notably the most commonly used polymers in 3D printing. The limited print area of 3D printers necessitates post‐production joining processes. In this study, the weldability of plates obtained using PLA Wood filament through the FSW is evaluated. For this purpose, different pin geometries (triangle, square, and screw), feed rates (20, 40, and 60 mm/min), and tool rotation speeds (1250, 1750, and 2250 rpm) are employed. Visual inspections are conducted to determine the effects of process parameters on weld quality and to identify defects in the weld region. Temperature values are measured to investigate the influence of heat generated during the FSW process. Furthermore, after determining the highest weld strengths achieved for each pin geometry, the weldability of PLA Wood material with PLA‐CF and PLA Plus materials is investigated using these parameters. The results indicate that the highest weld quality for joining PLA Wood plates is achieved using the square pin geometry, 20 mm/min feed rate, and 1750 rpm with an efficiency of 74.5%. When welding PLA Wood with PLA‐CF and PLA Plus, high weld strengths are obtained using the same process parameters (square pin, 20 mm/min, and 1750 rpm).Highlights Friction stir welding process of 3D printed PLA Wood material. Friction stir welding process of dissimilar materials pairs. Effect of welding parameters on weld strength and hardness. Identifying the fracture surface images occurring in parts after friction stir welding. Examination of temperature generation during friction stir welding.

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“…[ 2 ] Previous studies emphasize the impact of deposition angles on dimensional and weight accuracy. [ 3 ] With most of the research aimed at polylactic acid (PLA), [ 4,5 ] polyethylene terephthalate (PET) has been understudied as a material used in the fabrication of compliant mechanisms, though its’ mechanical properties make it a top choice for these applications. [ 6 ] This work is aimed at dimensional and weight characterization of 3D printed PET specimens designed for compliant mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Dimensional and Weight Characterization of 3D Printed PET Specimens Designed for Compliant Mechanisms

Nicolescu,

Hadăr,

Baciu

et al. 2024

Macromolecular Symposia

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The paper presents a study on the dimensional and weight characterization of 3D printed polyethylene terephthalate specimens designed specifically for compliant mechanisms. Compliant mechanisms find applications in various industries, including medical, consumer goods, education, and research and development. Ensuring these mechanisms meet the required functional needs is crucial, particularly when customizing medical devices. The research focuses on material selection, a critical aspect for 3D printed compliant mechanisms. To investigate the influence of the material deposition angle on the quality and precision of 3D printing, the study considers traction and bending specimens. For each specimen type, three sets of five specimens are manufactured, incorporating different deposition angles: 0°, ±45°, and 90°. In total, 30 specimens are produced, labeled, weighted, and measured. The results reveal that specimens printed at a deposition angle of 45° exhibit the smallest dimensional and mass deviations, indicating higher precision and accuracy. Those printed at 0° follow closely in terms of deviation, while specimens printed at 90° display larger deviations.

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Comparison of mechanical properties of 3D-printed and compression-molded wood-polylactic acid (PLA) composites

Cited by 8 publications

References 19 publications

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Effect of process parameters on the mechanical behavior of additively manufactured and FSW joined PLA wood sheets

Dimensional and Weight Characterization of 3D Printed PET Specimens Designed for Compliant Mechanisms

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