A Study on the Comparison Mechanical Properties of 3D Printing Prototypes with Laminating Direction

Park, Chan; Kim, Myung Hun; Hong, Sung M.; Go, Jeung Sang; Shin, Bo Sung

doi:10.7735/ksmte.2015.24.3.334

Cited by 15 publications

(5 citation statements)

References 4 publications

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“…The post-processing methods can also affect the performance of the printed samples, as the resins used suffer shrinkage and deformation [37][38][39][40]. In the present study, this process followed the manufacturer's instructions.…”

Section: Discussionmentioning

confidence: 99%

Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study

García,

Gómez-Polo,

Fernández

et al. 2024

Applied Sciences

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Background: With CAD-CAM, dental models are often fabricated by additive manufacturing (AM) methods. Dental models for implant prostheses involve the manual placement of analogs, which could affect their final fit. Therefore, in this experimental in vitro study, the accuracy of the analogs’ position in models printed using AM methods was examined by comparing three different printing orientations. Methods: An STL file was obtained by scanning a master model with an implant placed in the maxillary left central incisor position. Three study groups (n = 10) with varying printing orientation parameters were obtained (0, 45, and 90 degrees). They were digitalized with a laboratory scanner and evaluated with an analysis metrology program. Differences between 3D datasets were measured using the RMS for trueness and SD RMS for precision. The data were statistically analyzed using the ANOVA test at a significance level of p < 0.05, followed by the Bonferroni post hoc test. Results: The 45-degrees group showed the best results. Regarding trueness, statistically significant differences were found between the 45- and 90-degrees groups (p < 0.005). In terms of precision, statistically significant differences appeared between the 45- and 0-degrees groups (p < 0.011) and between the 45- and 90-degrees groups (0.003). Conclusions: The printing angulation parameter affects the accuracy of 3D-printed models. Implant models manufactured at 45 degrees of printing angulation are more accurate than those printed at 0 or 90 degrees.

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Section: Discussionmentioning

confidence: 99%

Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study

García,

Gómez-Polo,

Fernández

et al. 2024

Applied Sciences

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show abstract

“…Since the mechanical properties of the ABS material can be affected by the working conditions of the 3-D printer, the same 3-D printer used to produce the scaled-down structural model was used to produce tensile test specimens of the ABS material, and the material properties were calculated. Since the ABS material has orthotropic properties that are affected by the orientation of the laminated layer, it was necessary to fabricate specimens and perform tensile tests according to the lamination direction [13][14][15]. Considering the geometry of three-dimensional structures such as FCS and SMP, tensile specimens of orthotropic materials should be fabricated in the length, width, and height directions of the specimen.…”

Section: Finite-element-analysis-based Strength Performance Evaluationmentioning

confidence: 99%

Structural Model Test for Strength Performance Evaluation of Disconnectable Mooring Apparatuses Installed on Floating-Type Offshore Wind Turbine

Lee¹,

Song

2023

JMSE

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The destructive power of typhoons has been continuously increasing due to the influence of global warming. In a situation where the installation of floating wind turbines is increasing around the world, concerns about huge losses and collapses of floating offshore wind turbines due to strong typhoons are deepening. Regarding the safe operation of floating offshore wind turbines, the development of a new type of disconnectable mooring system is required. The newly developed disconnectable mooring apparatuses, such as fairlead chain stoppers (FCS) and submersible mooring pulleys (SMP), considered in this study are devised to more easily attach or detach the floating offshore wind turbine with mooring lines compared to other disconnectable mooring systems. In order to investigate the structural safety of the initial design of FCS and SMP that can be applied to MW class floating-type offshore wind turbines, scaled-down structural models were produced using a 3-D printer, and structural tests were performed on those models. For the structural tests of the scaled-down models, tensile specimens of the acrylonitrile butadiene styrene material used in the 3-D printing process were prepared, and the material properties were evaluated by performing tensile tests. Finite element analyses of FCS and SMP were performed by applying the material properties obtained from the tensile tests and the same load and boundary conditions as in the scaled-down model structural tests. Through the finite element analyses, the weak structural parts of FCS and SMP were reviewed. The structural model tests were performed considering the main load conditions of the fairlead chain stopper, and the test results were compared to the finite element analyses. Through the results of this study, it was possible to experimentally verify the structural safety of the initial design of disconnectable mooring apparatuses. Furthermore, the study results can be used to improve the structural strength of FCS and SMP in a detailed design stage.

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“…This technology comprises methods such as material extrusion (also known as fused deposition modeling - FDM), stereolithography, selective laser melting, and selective laser sintering [ 2 ]. Stereolithography (SLA) was invented by Hideo Kodama [ 3 ], selective laser melting (SLM) was introduced by the Fraunhofer Institute ILT [ 4 ], laminated object manufacturing was introduced by Helisys Inc. [ 5 ], and fused deposition modelling (FDM) was invented by Scott Crump [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the surface roughness and dimensional accuracy of low-cost 3D-printed parts made of PLA–aluminum

Sukindar,

Md Yasir,

Azhar

et al. 2024

Heliyon

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A Study on the Comparison Mechanical Properties of 3D Printing Prototypes with Laminating Direction

Cited by 15 publications

References 4 publications

Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study

Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study

Structural Model Test for Strength Performance Evaluation of Disconnectable Mooring Apparatuses Installed on Floating-Type Offshore Wind Turbine

Evaluation of the surface roughness and dimensional accuracy of low-cost 3D-printed parts made of PLA–aluminum

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