Temperature-compensated constitutive model of fused filament fabrication 3D printed PLA materials with full extrusion temperatures

Zhu, Kaiyang; Deng, Zichen; Dai, Shi; Yu, Yajun

doi:10.1108/rpj-04-2021-0101

Cited by 3 publications

(3 citation statements)

References 42 publications

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“…Due to the fact that the print parameters are crucial, the parameters used for depositing plastics with 3D FDM printing to metal are presented in Table 3. Researchers agree that the parameters for the 3D FDM printing process have a significant influence on the properties of the printed element [68][69][70][71][72][73]. Due to the fact that the print parameters are crucial, the parameters used for depositing plastics with 3D FDM printing to metal are presented in Table 3.…”

Section: Methods Of Manufacturing Metal-polymer Componentsmentioning

confidence: 97%

Deposition of Biocompatible Polymers by 3D Printing (FDM) on Titanium Alloy

2022

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Nowadays, the replacement of a hip joint is a standard surgical procedure. However, researchers have continuingly been trying to upgrade endoprostheses and make them more similar to natural joints. The use of 3D printing could be helpful in such cases, since 3D-printed elements could mimic the natural lubrication mechanism of the meniscus. In this paper, we propose a method to deposit plastics directly on titanium alloy using 3D printing (FDM). This procedure allows one to obtain endoprostheses that are more similar to natural joints, easier to manufacture and have fewer components. During the research, biocompatible polymers suitable for 3D FDM printing were used, namely polylactide (PLA) and polyamide (PA). The research included tensile and shear tests of metal–polymer bonds, friction coefficient measurements and microscopic observations. The friction coefficient measurements revealed that only PA was promising for endoprostheses (the friction coefficient for PLA was too high). The strength tests and microscopic observations showed that PLA and PA deposition by 3D FDM printing directly on Ti6Al4V titanium alloy is possible; however, the achieved bonding strength and repeatability of the process were unsatisfactory. Nevertheless, the benefits arising from application of this method mean that it is worthwhile to continue working on this issue.

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Section: Methods Of Manufacturing Metal-polymer Componentsmentioning

confidence: 97%

Deposition of Biocompatible Polymers by 3D Printing (FDM) on Titanium Alloy

2022

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“…The choice of both: additive technology and prototype material has a significant influence on the mechanical strength of printed details (Duarte et al , 2022; Mantecón et al , 2022; Zhu et al , 2022). Equally, determining the print parameters, such as the model orientation against the prototyping machine platform, the temperature of the print head nozzle, internal structure, the thickness of the thread or the supporting structures, is decisive for a printing process to be successful (Fontana et al , 2022; Nahar and Gurrala, 2022; Sedighi et al , 2022).…”

Section: Introductionmentioning

confidence: 99%

Study of unidirectional torsion of samples with different internal structures manufactured in the MEX process

Budzik

Dziubek

Przeszłowski

et al. 2023

RPJ

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Purpose Manufacturing of products loaded with torque in an incremental process should take into account the strength in relation to the internal structure of the details. Incremental processes allow for obtaining various internal structures, both in the production process itself and as a result of designing a three-dimensional computer-aided design model with programmable strength. Finite element analysis (FEA) is often used in the modeling process, especially in the area of topological optimization. There is a lack of data for numerical simulation processes, especially for the design of products loaded with torque and manufactured additive manufacturing (AM). The purpose of this study is to present the influence of the internal structure of samples produced in the material extrusion (MEX) technology on the tested parameters in the process of unidirectional torsion and to present the practical application of the obtained results on the example of a spline connection. Design/methodology/approach The work involved a process of unidirectional torsion of samples with different internal structures, produced in the MEX technology. The obtained results allowed for the FEA of the spline connection, which was compared with the test of unidirectional torsion of the connection. Findings The performance of the unidirectional torsion test and the obtained results allowed us to determine the influence of the internal structure and its density on the achieved values of the tested parameters of the analyzed prototype materials. The performed FEA of the spline connection reflects the deformation of the produced connection in the unidirectional torsion test. Originality/value There are no standards for the torsional strength of elements manufactured from polymeric materials using MEX methods, which is why the industry often does not use these methods due to the need to spend time on research, which is associated with high costs. In addition, the industry is vary of unknown solutions and limits their use. Therefore, it is important to determine, among others, the strength parameters of components manufactured using incremental methods, including MEX, so that they can be widely used because of their great potential and thus gain trust among the recipient market. In addition, taking into account the different densities of the applied filling structure of the samples made of six prototype materials commonly available from manufacturers allowed us to determine its effect on the torsional strength. The presented work can be the basis for constructors dealing with the design of elements manufactured in the MEX technology in terms of torsional strength. The obtained results also complement the existing material base in the FEA software and perform the strength analysis before the actual details are made to verify the existing irregularities that affect the strength of the details. The analysis of unidirectional torsion made it possible to supplement the material cards, which often refer to unprocessed material, e.g. in MEX processes.

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“…Additive manufacturing, often termed 3D printing, is a comprehensive materials development technique which has gained signification attention following its discovery in the 1980s [1][2][3][4][5][6][35][36][37]. At present this technology is experiencing significant growth and can now be applied using a wide range of methods, including material jetting [38,39], binder jetting [40,41], material extrusion [42][43][44][45][46], powder bed fusion [47,48], vat photopolymerization [37,[49][50][51][52][53], and sheet lamination [35,36,54,55].…”

Section: Introductionmentioning

confidence: 99%

A Review of Multi-Material 3D Printing of Functional Materials via Vat Photopolymerization

2022

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Additive manufacturing or 3D printing of materials is a prominent process technology which involves the fabrication of materials layer-by-layer or point-by-point in a subsequent manner. With recent advancements in additive manufacturing, the technology has excited a great potential for extension of simple designs to complex multi-material geometries. Vat photopolymerization is a subdivision of additive manufacturing which possesses many attractive features, including excellent printing resolution, high dimensional accuracy, low-cost manufacturing, and the ability to spatially control the material properties. However, the technology is currently limited by design strategies, material chemistries, and equipment limitations. This review aims to provide readers with a comprehensive comparison of different additive manufacturing technologies along with detailed knowledge on advances in multi-material vat photopolymerization technologies. Furthermore, we describe popular material chemistries both from the past and more recently, along with future prospects to address the material-related limitations of vat photopolymerization. Examples of the impressive multi-material capabilities inspired by nature which are applicable today in multiple areas of life are briefly presented in the applications section. Finally, we describe our point of view on the future prospects of 3D printed multi-material structures as well as on the way forward towards promising further advancements in vat photopolymerization.

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Temperature-compensated constitutive model of fused filament fabrication 3D printed PLA materials with full extrusion temperatures

Cited by 3 publications

References 42 publications

Deposition of Biocompatible Polymers by 3D Printing (FDM) on Titanium Alloy

Deposition of Biocompatible Polymers by 3D Printing (FDM) on Titanium Alloy

Study of unidirectional torsion of samples with different internal structures manufactured in the MEX process

A Review of Multi-Material 3D Printing of Functional Materials via Vat Photopolymerization

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