Article
Polymer Science
Feiyang He, Haoran Ning, Muhammad Khan
Summary: The present paper investigates the process parameters and damping behaviour of ABS cantilever beam manufactured using MEX. It uses an experimental approach to examine the interdependencies between process parameters and damping behavior. Statistical analysis and regression models are used to reveal significant dependencies and evaluate the findings. The obtained results show that infill density and nozzle size have a notable effect on damping behavior.
Article
Multidisciplinary Sciences
Ishant Singhal, Bobby Tyagi, Riya Chaudhary, Ankit Sahai, Haniyeh Fayazfar, Rahul Swarup Sharma
Summary: Understanding and improving 3D printing process models are crucial for designing defect-free 3D printers. This paper presents a systematic approach for the process design and modeling of material extrusion-based additive manufacturing, considering all process parameters. Mathematical modeling is used to identify constraints and expressions related to various process parameters, facilitating the computation of precise design parameters. The developed mathematical expressions are pivotal for regulating the 3D printing process effectively.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Engineering, Manufacturing
Beining Li, Zixiao Xue, Benxue Jiang, Tao Feng, Long Zhang, Xiaofeng Wang, Jin He
Summary: The fabrication of transparent ceramics with complex geometric structure by 3D printing has gained increasing research interest. In this study, infrared transparent 3Y-TZP ceramics were successfully 3D printed for the first time using material extrusion. A high solid content aqueous ceramic ink with excellent shear thinning properties was developed for the printing process, and hemispherical dome covers and flat discs were successfully printed. The 3D printed infrared transparent ceramics achieved a high relative density and exhibited high transparency in the mid-infrared region.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Terek Li, Zia Saadatnia, Tianhao Chen, Jia Xi Mary Chen, Hao Tian Harvey Shi, Hani E. Naguib
Summary: A simple and accessible method using a super absorbent polymer as ink is developed to directly 3D print conductive polymers. This technique significantly reduces processing time and improves the ability to create high-performance micro-supercapacitors, suitable for a variety of applications.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
Naruki Ichihara, Masahito Ueda
Summary: A framework is proposed for producing optimized infill structures for 3D-printed curvilinear fiber-reinforced polymer composites. The material orientation was optimized to maximize physical properties, and a phase field of stripe patterns was developed based on the optimized material orientation vector field using a local activation and long-range inhibition system. The phase field was then converted into a 3D print path. Numerical and experimental validations demonstrated that the optimized infill structure exhibited higher structural stiffness compared to commonly used concentric or rectilinear strategies, highlighting the advantage of the proposed method.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Ceramics
Rene Wick-Joliat, Martina Schroffenegger, Dirk Penner
Summary: This study presents a method for fabricating multi-material ceramic parts using a granulate-fed printer. Examples include colored ZrO2 parts and ceramic high-temperature heating elements consisting of electrically conductive and non-conductive components. Microscopy confirms flawless layer adhesion between different materials if the material combination is chosen carefully. All feedstocks are based on a commercially available ceramic injection molding binder filled with the desired ceramic powder, making the preparation and optimizing of conditions simple and reproducible.
CERAMICS INTERNATIONAL
(2023)
Article
Polymer Science
Pattaraporn Panraksa, Sheng Qi, Suruk Udomsom, Pratchaya Tipduangta, Pornchai Rachtanapun, Kittisak Jantanasakulwong, Pensak Jantrawut
Summary: The study investigated the use of hydrophilic polymers and 3D printing technology to create orodispersible films, with sodium carboxymethylcellulose showing promising results in terms of printing resolution and disintegration time. However, the rigid and brittle nature of the SCMC-5 3D-printed ODFs indicates the need for specialized packaging to prevent damage before practical use.
Article
Polymer Science
Ruben Bayu Kristiawan, Boby Rusdyanto, Fitrian Imaduddin, Dody Ariawan
Summary: This study aimed to investigate the impact of a glass powder additive on recycled polypropylene (rPP) materials for use in 3D printing applications. The addition of glass powder improved the thermal stability and melting temperature of rPP, while increasing its ultimate tensile strength and Young's modulus. Furthermore, the addition of the glass powder reduced bending deformation and curvature of the filaments.
Article
Polymer Science
Yee Mon Than, Sarisa Suriyarak, Varin Titapiwatanakun
Summary: This study investigated the rheological properties of 17 formulations of successful printed tablets, showing that the drug load, polymer composite, disintegrant type, temperature, and shear rate all have an impact on the viscosity and rheological behavior of printable mixtures.
Article
Pharmacology & Pharmacy
Haonan Qian, Di Chen, Xiangyu Xu, Rui Li, Guangrong Yan, Tianyuan Fan
Summary: The aim of this study was to design and fabricate 3D-printed sustained-release gastric-floating formulations using fused deposition modeling (FDM), and to investigate the influence of shape and infill percentage on the properties of the printed formulations. The results showed that the shape and infill percentage affected the hardness, floating time, and in vitro drug release of the printed formulations.
Article
Engineering, Manufacturing
Elke Prasad, John Robertson, Alastair J. Florence, Gavin W. Halbert
Summary: In this study, a novel filament free 3D printing system was developed, overcoming the limitations of filament based material extrusion printing in pharmaceutical manufacturing. The system successfully printed oral solid dose forms, allowing for patient centred dose forms.
ADDITIVE MANUFACTURING
(2023)
Article
Pharmacology & Pharmacy
S. Henry, A. Samaro, F. H. Marchesini, B. Shaqour, J. Macedo, V. Vanhoorne, C. Vervaet
Summary: Extrusion-based 3D printing is being utilized for personalized medicine production in the medical field, but further research is needed to fully understand the interplay between material properties, process parameters, and printer-dependent variables for optimal printing behavior. This study characterizes various polymers and polymer-drug blends to determine their mechanical, thermal, and rheological properties, and links these properties to the quality of the end-product. Insights gained from this research will aid in accelerating pharmaceutical formulation development for 3D printed medications.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Polymer Science
Miroslav Muller, Petr Jirku, Vladimir Sleger, Rajesh Kumar Mishra, Monika Hromasova, Jan Novotny
Summary: This study investigates the fatigue behavior of PLA material with bamboo filler printed by FDM technology at different infill densities and print nozzle diameters. The results show that infill density has a significant effect on the mechanical properties and fatigue characteristics of the material. The study also found a good interaction between the PLA matrix and the bamboo-based filler.
Article
Materials Science, Multidisciplinary
Chih-Hsing Liu, Yang Chen, Sy-Yeu Yang
Summary: The study aims to identify the hyperelastic material parameters for 3D printed TPEs at different infill percentages. Tensile tests are conducted to obtain the nonlinear stress-strain relationships for TPE specimens with varying infill percentages, and the hyperelastic Ogden model is used to fit the curves. Regression analyses are performed to explore the relationships between infill percentage and material parameters, which are then used in an FEA simulation of the tensile test with satisfactory agreement to experimental data.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Prashanth Ravi, Leonid L. Chepelev, Gabrielle Stichweh, Benjamin S. Jones, Frank J. Rybicki
Summary: This study tested the accuracy of anatomical models printed using Material Extrusion (MEX) and found that the dimensional errors were all within 1 mm. The results suggest that MEX could be suitable for 3D printing of anatomical models if an accuracy level of 1 mm is deemed sufficient for the application.
JOURNAL OF DIGITAL IMAGING
(2022)