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Article
Materials Science, Characterization & Testing
Bagdaulyet Yermurat et al.
Summary: 3D printing using multi-materials is currently a popular topic, with Fused Deposition Modeling (FDM) being a widely used technique for printing plastics and composites. This study used an independent double extruder FDM 3D printer to print acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA) in the same structure. Different layer thicknesses, infill ratios, and infill types were tested, and the tensile strength of PLA and ABS combined in a structure was found to increase significantly.
Article
Materials Science, Characterization & Testing
Meltem Eryildiz
Summary: This study investigates the effect of the fabrication method and build orientation on the impact results of 3D-printed PLA. The impact strength of specimens with 3D-printed notches is found to increase by 11-38% compared to specimens with machined notches after 3D printing. The findings also highlight the sensitivity of build and print orientations on impact strength.
Article
Materials Science, Characterization & Testing
Bingfei Liu et al.
Summary: 4D printing, a new interdisciplinary research field combining advanced manufacturing, materials science, and mechanics, has attracted academic interest in recent years. In the study of additive manufacturing of Shape Memory Polymer (SMP) structures, tests were conducted to determine the thermodynamic properties of SMP and examine the effect of different parameters on the mechanical properties of SMP samples. The results showed that adjusting the structural parameters can effectively improve the tensile strength of SMP samples.
Article
Mechanics
Mirsadegh Seyedzavvar et al.
Summary: The application of fused filament fabrication (FFF) has been growing rapidly in various industries as an economical and practical solution for prototyping and functional component production. This paper investigates the effects of internal architecture on fracture behavior in the FFF process. The results show that samples with a triangular filling pattern exhibit the highest fracture toughness and load carrying capacity, while samples with a 3D infill structure have the lowest.
Article
Engineering, Mechanical
J. L. Liu et al.
Summary: Inspired by the fibre layup in the exoskeleton of mantis-shrimp, this study demonstrates that controlling the printing direction can significantly improve the out-of-plane strength and impact toughness of 3D printed plates. The helicoidal layup of the printed plates surpasses conventional plates in terms of strength and impact energy dissipation. The study also reveals that the damage mechanisms of 3D printed plates differ under static loading and dynamic impact, and the helicoidal layup excels in both conditions.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Materials Science, Characterization & Testing
Robin Roj et al.
Summary: Fused deposition modeling has become the most common 3D printing technology due to its easy application and low price. This study investigates 16 different filaments and concludes that the optimal printing quality is achieved with temperatures on the colder end of the range between melting and decomposition, using the findings of differential scanning calorimetry.
Article
Materials Science, Characterization & Testing
Gizem Acar Yavuz et al.
Summary: This study investigates the low velocity impact behaviors of 3D printed curved honeycomb cellular panels used for impact protection. The energy absorbing capacity of the panels is predicted through evaluating the results. Furthermore, the changes in the fundamental free vibration frequencies of the panels after impact are examined to determine the presence of damage. The effect of curvature on the damage mechanisms of 3D printed honeycomb panels is studied through contact force-deformation curves, energy profile diagrams, and SEM images, with the experimental results showing that the radius of curvature greatly affects the impact and free vibration behavior.
Article
Materials Science, Characterization & Testing
Musa Yilmaz et al.
Summary: Material type and part deposition orientation are important considerations in additive manufacturing. This study investigates the effects of raster angle in single- and multi-oriented layers using PEI/ULTEM 1010 material, and finds that a 0 degrees part deposition orientation offers optimal mechanical properties.
Article
Green & Sustainable Science & Technology
Ahmet Refah Torun et al.
Summary: Polylactic acid (PLA) is a widely used biomaterial in medical applications due to its biodegradability and renewability. This study investigated the mixed-mode fracture behaviors of 3D-printed PLA samples using both numerical and experimental methods, determining the fracture toughness values through finite-element analyses.
Article
Materials Science, Multidisciplinary
N. Choupani et al.
Summary: The study focused on examining toughness values of different materials (BM, SW, and GW) in an API X65 gas transportation pipeline. Experimental values of toughness were obtained at room temperature, and Charpy V-notch impact tests were conducted at both room and low temperatures to determine the effects of low temperature on toughness. The study found that the Charpy V-notch test is not suitable for accurately predicting toughness due to large error values.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Engineering, Mechanical
B. Ameri et al.
Summary: This study evaluates the fracture characteristics of FDM 3D-printed ABS material under mixed-mode I/II loading through SCB tests. Results demonstrate the accuracy of XFEM-CZM and ASED criteria in predicting fracture behavior, as well as the impact of stress raisers like holes on material strength.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Engineering, Mechanical
Pradeep Kumar Mishra et al.
Summary: The study analyzes the impact of water absorption and heat treatment on the impact strength of 3D printed specimens, proposing a low-cost post-processing technique to enhance impact strength significantly. Experimental findings highlight the importance of raster orientation in impact resistance, revealing post-processing heat treatment as a more convenient option compared to water absorption in terms of processing time and cost.
RAPID PROTOTYPING JOURNAL
(2021)
Article
Mechanics
Kwonhwan Ko et al.
COMPOSITE STRUCTURES
(2020)
Article
Mechanics
B. Ameri et al.
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Engineering, Multidisciplinary
Kwonhwan Ko et al.
COMPOSITES PART B-ENGINEERING
(2019)
Article
Engineering, Multidisciplinary
M. A. Caminero et al.
COMPOSITES PART B-ENGINEERING
(2018)
Article
Automation & Control Systems
Xinhua Liu et al.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2017)
