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485 results for “3D Printing”
Fig. 9 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 9. Virtual and physical hydrostatic models of Baculites compressus with computed percentage of the phragmocone emptied for neutral buoyancy (Φ) and hydrostatic stability (St). Green, soft body; grey, shell; red, gas; blue, liquid; yellow, PLA plastic; purple, bismuth counterweight; B, center of buoyancy; M, center of mass. A. Virtual model with an even distribution of cameral liquid and gas in the phragmocone (center of mass of cameral liquid and gas = center of volume of the phragmocone; cameral liquid and gas not shown). B. Modified virtual model with simplified internal geometry ("Modified 1" in Table 3). C. Neutrally-buoyant, 3D printed model. D. Modified virtual model with simplified internal geometry and axel hole through pivot point of rotation ("Modified 2" in Table 3). E. Neutrally-buoyant, 3D printed model fixed to an axel and silicone tubing used to supply thrust in the ventral direction. For this model, the mass discrepancy (Table 5) resulted in a slightly lower of 97.3%, but was held constant at 100%. All computed errors in St were computed assuming that the total mass discrepancy was distributed in the positive or negative z-directions.
Fig. 6 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 6. Hydrostatic models of Baculites compressus with computed percentage of the phragmocone emptied for neutral buoyancy (Φ) and hydrostatic stability (St). All models are oriented dorsum-left. The centers of buoyancy are marked by the tip of the higher pyramid. The total centers of mass are marked by the tip of the lower pyramid. Each material of unique density is designated a color (green, soft body; red, cameral gas; blue, cameral liquid; transparent grey, shell). A. Virtual model with 40% body chamber length to total length (BCL/L). B. Virtual model with 33% BCL/L and adorally distributed cameral liquid. C. Virtual model with 33% BCL/L and adapically distributed cameral liquid. D, E. B. compressus model modified with a concave dorsum similar to B. grandis and 33% BCL/L. Adorally (D) and adapically (E) distributed cameral liquid.
Fig. 3. Full 3D in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 3. Full 3D model of Baculites compressus with model components. A. Complete, digitally-reconstructed shell rendered in X-ray view to show internal structure. B. Three-dimensional model the soft body. C. Three-dimensional model of the cameral volumes within the phragmocone.
Fig. 4 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 4. Generation of a 3D printed model of Nautilus pompilius with theoretically equal physical properties to the virtual counterparts. A. Original virtual model from Peterman et al. (2019: fig. 2.5). B. Modified virtual model with simplified internal geometry. The center of buoyancy remains the same because external geometry does not change. The total center of mass, however, is corrected by a bismuth counterweight of known volume, density, and mass. C. 3D printed posterior half of the physical model with bismuth counterweight in the computed position. D. Anterior half of the physical model showing the one-way valve for liquid to exit upon displacement by an air-filled balloon. E. Neutrally buoyant physical model with the required volume to liquid ratio for neutral buoyancy. This computed volume of air is inserted through a one-way entrance valve into the internal balloon. Tracking points are placed parallel to the aperture in order to analyze movement in a hydrodynamic setting.
Fig. 5 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 5. Position of the ventral tracking point (V) and umbilical tracking point (U) as a function of time measured with the physics modeling software (Tracker 4.11.0; Brown 2017). Note that the rotation of the aperture is coupled with translational motion, resulting in complex movement.
Fig. 11 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 11. Thrust required to change the Baculites compressus model orientation (θa). A. Thrust Scenario 1: A continuous thrust supplied to the venter with a similar thrust ratio to Nautilus (Table 1). The average change from a vertical resting orientation (Δ θpeak) is 22.7°. B. Thrust Scenario 2: Periodic pulses from a pump with a simulated mantle cavity of 20% soft body volume of B. compressus (Table 1). The average change from a vertical resting orientation ( Δ θpeak) is 25.6°. C. Thrust Scenario 3: Periodic pulses from a pump with a thrust ratio between Sepia officinalis and Loligo vulgaris (Table 1). The average change from a vertical resting orientation (Δ θpeak) is 72.2°. Average peak thrust (Fpeak) error bars represent one standard deviation calibrated from 30 second intervals of pumping.
Fig. 8 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 8. Hydrodynamic restoration of the Nautilus pompilius 3D printed model following underdamped harmonic oscillation. Apertural angle (θa) measured in degrees as a function of time after rotating approximately 38° from the equilibrium orientation. An angle of zero represents a condition where the aperture is horizontally oriented. Open dots represent the peaks used to calculate decay in amplitude with time (grey dashed curves).
Fig. 2 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 2. Shell and septum thickness measured from three specimens of Baculites compressus (WSU-1400, WSU-1401, and WSU-1405). Exponential curves were fit to these points to define thickness for the full 3D model as a function of whorl height.
Fig. 1 in Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
Fig. 1. Three-dimensional reconstruction of a fragmentary baculite Baculites compressus Say, 1820 (WSU-1400) from the late Campanian Pierre Shale of Meade County, South Dakota. A. Model of a fragmentary specimen generated by photogrammetry with the software (3DF Zephyr). B. Broken septum isolated from the photogrammetry model. C. Suture pattern. D. Complete septum created by reconstructing the higher-order frilling with the suture pattern as a template.
Development Interior Product Using 3D Printing Technology and Waste Management
<p><span>This research aims to increase the variety of interior accessories that can be produced by MSMEs in Malang City and can be used as souvenirs because they carry elements of the locality of Malang City. The 3D printing technology that will be used is the lithophane technique and utilizes 3D printing pen waste on a household scale.</span></p>
Dataset for the publicaion "Cleaning strategies for 3D-printed porous scaffolds used for bone regeneration fabricated via ceramic vat photopolymerization"
<p>Dataset of publicaion "Cleaning strategies for 3D-printed porous scaffolds used for bone regeneration fabricated via ceramic vat photopolymerization".</p> <p><a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.ceramint.2024.10.160" target="_blank" rel="noreferrer noopener">https://doi.org/10.1016/j.ceramint.2024.10.160</a></p> <p>Dataset includes results of TGA analysis, viscosity measurements and mechnaical properties. </p>
3D Printing Simulation Analysis of skeleton gyroid structure (standard, double and graded)_Spoke11_WP4_Task4.1_MOST
<p>These findings provide a comprehensive understanding of the challenges and considerations in 3D printing complex lattice structures, emphasizing the importance of residual stress management, thermal stability, and print direction alignment for optimal mechanical performance.</p>
Supplementary data for study on "Superplastic 3D printed nitinol woven metamaterials lead to dramatic variations of mechanical properties by design"
<p>Raw and processed data from experimental compression testing of 3D printed nitinol lattices and wovens are provided as supplementary materials for the mentioned study, submitted for evaluation to the journal of Virtual and Physical Prototyping.</p>
Predicting Response: Waste-based biopolymer slurry recipe for 3d-printing
<p>Waste-based biopolymer slurry recipe preparation description for 3d-printing. It combines cellulose floc fibers and xanthan gum. </p> <p>This recipe has been used for the print experiment in the paper:</p> <p>Rossi G., Chiujdea R., Colmo C., ElAlami C., Nicholas P., Tamke M., Ramsgaard Thomsen M. (2021) A material monitoring framework: tracking the curing of 3d printed cellulose-based biopolymers. In Acadia 2021 Realignments. </p>
Data set for publication Sikora P., Techman M., Federowicz K., El-Khayatt A.M., Saudi H.A., Abd Elrahman M., Hoffmann M., Stephan D., Chung S.-Y. Insight into the microstructural and durability characteristics of 3D printed concrete: Cast versus printed specimens. Case Studies in Construction Materials (2022), 17, e01320.
<p>Open dataset for publication Sikora P., Techman M., Federowicz K., El-Khayatt A.M., Saudi H.A., Abd Elrahman M., Hoffmann M., Stephan D., Chung S.-Y. Insight into the microstructural and durability characteristics of 3D printed concrete: Cast versus printed specimens. <strong>Case Studies in Construction Materials (2022)</strong>, 17, e01320. <a href="https://doi.org/10.1016/j.cscm.2022.e01320">https://doi.org/10.1016/j.cscm.2022.e01320</a></p> <p>File 1 - Mechanical characteristics - *.opju (Origin)</p> <p>File 2 - Particle size distributions of used materials - *.opju (Origin)</p> <p>File 3 - Sorptivity measurement data - *.opju (Origin)</p> <p>File 4 - G-code for printing of 1 layered specimen - *txt</p> <p>File 5 - G-code for printing of 3 layered specimens - *txt</p>
3D Printing Titanium with a Conical Electron Beam
<p>We teamed up with xBeam 3D Metal Printing (https://xbeam3d.com/) to characterise Ti-6Al-4V (Ti64) parts 3D printed using wire and a conical electron beam. In this video, I analyse the β-grain structures of the xBeam test parts, built with 3 different deposition strategies, and present a post-build heat treatment trial to demonstrate that the xBeam process can replicate wrought titanium aerospace parts.</p> <p>Original research paper: https://doi.org/10.1016/j.mtla.2021.101202</p> <p>xBeam 3D Metal Printing: https://xbeam3d.com/</p> <p>Research credits: Alec. E Davis, J. R. Kennedy, D. Strong, D. Kovalchuk, S. Porter, P. B. Prangnell.</p> <p>Video credits: Produced, written, recorded, and performed by Alec E. Davis.</p>
Solvent‑activated 3D‑printed electrodes and their electroanalytical potential
<p>Dataset including: electrochemical data, SEM data, surface tension, .stl for the labware design. </p>
3D Printing of Personalised Carvedilol Tablets Using Selective Laser Sintering - Underlying Data
<p><strong>Underlying μCT Data for "<em>3D Printing of Personalised Carvedilol Tablets Using Selective Laser Sintering</em>"</strong></p> <p>by <em>Atabak Ghanizadeh Tabriz, Quentin Gonot-Munck, Arnaud Baudoux, Vivek Garg, Richard Farnish, Orestis L. Katsamenis, Ho-Wah Hui, Nathan Boersen, Sandra Roberts, John Jones, and Dennis Douroumis</em></p> <p><em>published in MDPI pharmaceutics<br> In section: Physical Pharmacy and Formulation, Recent Non-oral Dosage Form Development: Focus on 3D-Printed Formulations</em></p> <p><em>The micro- and macro-porosities of representative 3D-printed tablets at 25%, 40%, and 55% laser intensities was measured. SLS-printed components were also characterised by means of X-ray microfocus computed tomography (μCT). Imaging was performed at the University of Southampton’s μ-VIS X-ray Imaging Centre (www.muvis.org) using a customised μCT scanner optimised for 3D X-ray histology (www.xrayhistology.org). The system, which is based on Nikon’s XTH225ST system (Nikon Metrology UK Ltd.)</em></p> <p> </p> <p><strong>Data index</strong></p> <ul> <li>20230206_XRH_3299_OLK_PHAR08603-DOSF_40.zip <ul> <li>Dataset (including ORS Dragonfly analysis file) of object printed at 40% laser power<br> 10 µm voxel size isotropic</li> </ul> </li> <li>20230206_XRH_3299_OLK_PHAR08616-DOSF.zip <ul> <li>Dataset (including ORS Dragonfly analysis file) of object printed at 55% laser power<br> 10 µm voxel size isotropic</li> </ul> </li> <li>20230206_XRH_3299_OLK_PHAR08616-DOSF_25.zip <ul> <li>Dataset (including ORS Dragonfly analysis file) of object printed at 25% laser power<br> 10 µm voxel size isotropic</li> </ul> </li> <li>SLS-3DP_OLK-CorrectRes.xlsx <ul> <li>Analysis results & graphs</li> </ul> </li> </ul> <p><em>X-ray CT analysis conducted using Dragonfly software (v. 2022.1.0.1231; Object Research Systems (ORS) Inc, Montreal, Canada, 2020; software available at http://www.theobjects.com/dragonfly</em></p>
Data from: 3D printed digital pneumatic logic for the control of soft robotic actuators
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Detecting anomalies in melt-extruded 3D printed parts using in situ data
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.