The influence of dog-bone shaped specimen geometry on tensile test results of fused filament fabricated Nylon 12

Baba, Marius Nicolae; Itu, Călin

doi:10.1007/s12206-022-2102-6

J Mech Sci Technol

2022

DOI: 10.1007/s12206-022-2102-6

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The influence of dog-bone shaped specimen geometry on tensile test results of fused filament fabricated Nylon 12

Marius Nicolae Baba

Călin Itu²

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2024

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Cited by 3 publications

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Comparative Analysis of Mechanical and Thermal Characteristics of 3D‐Printed Polyamide using Material Extrusion and Powder Bed Fusion Process with Industrial and Desktop Printers

Told,

Kardos,

Paari‐Molnar

et al. 2024

Macro Materials & Eng

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Polyamide (PA) has excellent mechanical properties, making it versatile in various applications, including 3D printing. This paper comprehensively investigates and compares the mechanical, structural, thermal, and geometric properties of 3D‐printed PA12 samples produced with desktop and industrial printers using material extrusion (MEX) and powder bed fusion (PBF) processes. The mechanical tests included tensile, flexural, Charpy impact, Shore hardness, torsion, and water absorption tests. Additionally, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and melt volume rate (MVR) measurements are conducted. To verify printing accuracy from a biomedical perspective, 3D‐printed prosthetic fingers are subjected to geometric assessments. Industrial PBF samples show significantly higher values for most mechanical properties, including a tensile Young's modulus of 1776 ± 19.42 MPa, while the second highest value is 1419 ± 58.77 MPa (MEX desktop). Furthermore, the MVR of the PBF industrial samples is the highest (18.34 cm3/10 min ± 2.32 cm3/10 min) and this printer exhibits superior performance in printing accuracy than the other printers. The balanced print quality and mechanics make the PBF industrial printer the most recommended for medical device production, but lower‐priced desktop FFF printers can be a good alternative for simple, fast solutions that do not require high precision.

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Comparative Analysis of Mechanical and Thermal Characteristics of 3D‐Printed Polyamide using Material Extrusion and Powder Bed Fusion Process with Industrial and Desktop Printers

Told,

Kardos,

Paari‐Molnar

et al. 2024

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

Challenges and Advancements in Additive Manufacturing of Nylon and Nylon Composite Materials: A Comprehensive Analysis of Mechanical Properties, Morphology, and Recent Progress

Safaei,

Memarzadeh,

Asmael

et al. 2024

J. of Materi Eng and Perform

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Investigation of the Fabrication Parameters’ Influence on the Tensile Strength of 3D-Printed Copper-Filled Metal Composite Using Design of Experiments

Kyratsis,

Tzotzis,

Korlos

et al. 2024

JMMP

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The present study investigates the effects of fabrication parameters such as the nozzle temperature, the flow rate, and the layer thickness on the tensile strength of copper-filled metal-composite specimens. The selected material is a polylactic acid (PLA) filament filled with 65% copper powder. Two sets of 27 specimens each were fabricated, and equivalent tensile experiments were carried out using a universal testing machine. The experiments were planned according to the full factorial design, with three printing parameters, as well as three value levels for each parameter. The analysis revealed that the temperature and the flow rate had the greatest impact on the yielded tensile strength, with their contribution percentages being 42.41% and 22.16%, respectively. In addition, a regression model was developed based on the experimental data to predict the tensile strength of the 3D-printed copper-filled metal composite within the investigated range of parameters. The model was evaluated using statistical methods, highlighting its increased accuracy. Finally, an optimization study was carried out according to the principles of the desirability function. The optimal fabrication parameters were determined to maximize the tensile strength of the specimens: temperature equal to 220 °C, flow rate equal to 110%, and layer thickness close to 0.189 mm.

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The influence of dog-bone shaped specimen geometry on tensile test results of fused filament fabricated Nylon 12

Cited by 3 publications

References 14 publications

Comparative Analysis of Mechanical and Thermal Characteristics of 3D‐Printed Polyamide using Material Extrusion and Powder Bed Fusion Process with Industrial and Desktop Printers

Comparative Analysis of Mechanical and Thermal Characteristics of 3D‐Printed Polyamide using Material Extrusion and Powder Bed Fusion Process with Industrial and Desktop Printers

Challenges and Advancements in Additive Manufacturing of Nylon and Nylon Composite Materials: A Comprehensive Analysis of Mechanical Properties, Morphology, and Recent Progress

Investigation of the Fabrication Parameters’ Influence on the Tensile Strength of 3D-Printed Copper-Filled Metal Composite Using Design of Experiments

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