Failure criterion for PA 12 multi-jet fusion additive manufactured parts

Osswald, Paul Victor; Obst, Philip; Capote, Gerardo A. Mazzei; Friedrich, Martin; Rietzel, Dominik; Witt, Gerd

doi:10.1016/j.addma.2020.101668

Cited by 13 publications

(14 citation statements)

References 21 publications

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“…), molecular weight, and powder particle size and its influence on print quality. Studies have also been carried out comparing PA 12 3D printed and pressed objects [ 9 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. Studies investigating composite materials, such as a PA 12-based polymer blended with tungsten carbide and cobalt (WCCo), are also available [ 14 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Additives and Print Orientation on the Properties of Laser Sintering-Printed Polyamide 12 Components

et al. 2022

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3D printing, also known as additive manufacturing, is becoming increasingly popular for prototype processing in industrial practice. Laser sintering, which is a laser powder bed fusion technique, is a versatile and common 3D printing technology, which enables compact and high-quality products. Polyamide 12, a popular 3D printing material, provides reliable mechanical and thermal properties. Weaknesses in applying this technology for polyamide 12 include incomplete information regarding the application of various types of additives and different printing orientations with respect to the properties. This study aimed to investigate the influence of various additives (including carbon fiber, glass fiber, flame retardant, and aluminum powder) combined with polyamide 12, using processing of predefined powder refreshing mixture on the properties of a finished product. The thermal, surface, and mechanical properties of samples printed with five different polyamides 12-based powders at three different print orientations were investigated. It was found that the inclusion of additives decreases the tensile strength and increases the surface roughness of printed components—however, the toughness increases. The results can assist designers in selecting an appropriate material that will produce a finished part with the required properties for a given application.

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Section: Introductionmentioning

confidence: 99%

Effect of Additives and Print Orientation on the Properties of Laser Sintering-Printed Polyamide 12 Components

et al. 2022

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“…Process parameters strongly influence the mechanical functionality and accuracy of the printed parts' geometry. [163][164][165] Table 7 shows various studies influencing process parameters on the mechanical properties of the materials. Fewer articles are available for this technology having polymer-based part printing.…”

Section: Materials Jettingmentioning

confidence: 99%

“…There is a broad scope for newer materials, as only a few are being taken up. A study conducted by Osswald et al [ 163 ] showed that 3D printed parts manufactured with PA powder mixed with PA12 show that the average strength obtained in the parts is 42.24 MPa, and the parts had more consistency when compared to parts made from SLS. With the increase in the wt% addition of triethylene glycol methyl ether in tripropylamine glycol diacrylate, Young's modulus of the specimens had a decreasing trend.…”

Section: Mechanical Properties Of Am Compositesmentioning

confidence: 99%

Mechanical characterization of additively manufactured polymer composites: A state‐of‐the‐art review and future scope

Darji,

Singh,

Mali

2023

Polymer Composites

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The additive manufacturing (AM) technology can manufacture complex parts with considerable improvements in lead times and lower material wastages. It has enabled technological advances across many domains, from space to medical devices. The polymer composites fabricated through AM have tremendous advantages over conventional polymers in terms of mechanical performance and are, therefore, better suited for producing functional parts and assemblies. However, AM of polymer composites still presents several technological obstacles that prevent their full commercial utilization. These challenges include limited combinations of matrix and reinforcements, a requirement for hardware modification of existing machines, and challenges in mechanical characterization. This article attempts to comprehensively review the fundamentals and features of contemporary additively manufactured polymer composites (AMPCs) and examines current cutting‐edge research and development. This review highlights the gaps in the mechanical characterization of polymer composites fabricated through various technologies like material extrusion, vat‐photopolymerization, binder jetting, material jetting, powder bed fusion, and sheet lamination. There is a need to fill the identified research gaps to make AMPCs more appealing for widespread industrial use for advanced applications.

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“…As an emerging technology, the characterization of MJF‐printed parts is of interest, especially compared to existing and more developed PBF processes like selective laser sintering (SLS). [ 11 ] Recent works in the literature have characterized mechanical and material properties of MJF prints in tension and impact as a function of feedstock and rheological characteristics, [ 12 ] wall thickness values, [ 13 ] and print orientation. [ 14 ] Explicit comparisons between the MJF and SLS processes have also been undertaken in order to establish process‐based differences and characterize basic material properties as a function of printing process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Build Parameters on the Mechanical Behavior of Polymeric Materials Produced by Multijet Fusion

Chen

Wright

et al. 2022

Adv Eng Mater

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Multijet fusion (MJF) is a novel additive manufacturing (AM) process for the powder bed fusion of thermoplastic polymers. In recent years, MJF has been established as a promising manufacturing technique for the rapid prototyping and production of fully functional, large‐scale components at high resolution. Like other powder bed fusion techniques, MJF permits the printing of parts without support material, and does not require chemical postprocessing steps, making it especially suitable for fabricating parts with complex and intricate internal features. However, the effects of common build volume parameters (such as part orientation, location, and interpart spacing) on mechanical properties are currently not well understood. This study aims to provide a thorough and comprehensive description of the trends in mechanical properties observed in polyamide (PA)‐11 and PA‐12 samples printed using the MJF process. Tensile, flexural, and impact specimens are printed using varying build volume packing parameters and tested according to the corresponding ASTM standards. The fracture surfaces of tested specimens are studied and characterized to further understand the method of failure propagation through MJF‐printed PA‐11 and PA‐12. As this work demonstrates, determining an optimal bed packing algorithm will be instrumental for optimizing desired mechanical properties of printed parts.

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Failure criterion for PA 12 multi-jet fusion additive manufactured parts

Cited by 13 publications

References 21 publications

Effect of Additives and Print Orientation on the Properties of Laser Sintering-Printed Polyamide 12 Components

Effect of Additives and Print Orientation on the Properties of Laser Sintering-Printed Polyamide 12 Components

Mechanical characterization of additively manufactured polymer composites: A state‐of‐the‐art review and future scope

Effect of Build Parameters on the Mechanical Behavior of Polymeric Materials Produced by Multijet Fusion

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