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40 results for “PMMA”
PMMA Mixed mode fracture
<p>This is a complete dataset of a mixed mode crack propagation experiment on PMMA. In addition to global load and displacement measurements, full displacement fields obtained by DIC are provided. DIC was also used to extract SIF and crack tip position during loading, allowing for validation of computational failure models.</p> <p>The file PMMA_Mixed_mode_fracture.pdf provides for a detailed description of the experiment as well as of the data available on this platform.</p>
Photo-thermal expansion of a PMMA nanosphere using mid-IR photo-induced force microscopy (PiF-IR)
<p>This dataset contains the raw data associated with our manuscript, <em>'Photo-thermal expansion of nanostructures in photo-induced force microscopy</em><strong>'</strong></p> <p>by Shohely Tasnim Anindo,1,2 Daniela Täuber,3,4 and Christin David*1,5</p> <div> <div> <div> <p>1 Institute of Condensed Matter Theory and Optics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany<br>2 Abbe Center of Photonics, Albert-Einstein-Straße 6, 07745 Jena, Germany<br>3 Institute of Physical Chemistry, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany <br>4 Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany <br>5 University of Applied Sciences Landshut, Am Lurzenhof 1, 84036 Landshut, Germany</p> </div> </div> </div> <p>The raw data were acquired using a VistaScope (Molecular Vista, US) operated in the side-band mode of mid-infrared photo-induced force microscopy (PiF-IR). These data are associated with the experimental part in this manuscript. Details of the data acquisition and processing are described in the Methods section of the manuscript.</p> <p>The dataset is structured in the following:</p> <ul> <li>PiF-IR scans of a spherical PMMA nanoparticle with radius R = 50 nm (PMMA NP) at varied illumination power in the resonant condition using the illumination frequency: 1150 cm^-1</li> <li>PiF-IR scans of the same PMMA NP at varied illumination power in the non-resonant condition using the illumination frequency: 1300 cm^-1</li> <li>PiF-IR hyperspectral scan of the same PMMA NP over the spectral range 989 - 1349 cm^-1</li> </ul>
Comparison of black and transparent PMMA in the cone calorimeter
<p>This data set is a supplementary resource for the article "Comparison of Black and Transparent PMMA in the Cone Calorimeter", which will be published by ASTM international for the ASTM 42nd symposium on Obtaining Data for Fire Growth models. </p> <p>The information is structured into multiple *.zip folders. The directory named 'black' contains the data-files for the Black PMMA samples. The directory called 'transparent' contains the data-files for the Transparent PMMA samples. </p> <p>The files are structured in the following way: </p> <ul> <li>Name: Material_color_measurement_heatflux_repetition (e.g.: PMMA_Black_HRR_25kWm2_R1).</li> <li>Each HRR file contains the following columns: Time in seconds, CO concentration in Vol%, CO2 concentration in Vol%, O2 concentration in Vol%, heat release rate per unit area in kW/m2. </li> <li>Time t=0s corresponds to opening the shutter.</li> </ul> <p>These files are not the raw data. CO, CO2 and O2 concentrations are measured as a voltage signal. This voltage signal is converted to a volume percentage using the calibration of the gas analyzer. The gas analyzer was calibrated at the beginning of every day. The analyzer showed a small drift over the time of the experiment. Therefore, a drift correction was done on the measured values. The concentrations in the data files have been corrected for this drift. The corrected concentrations were used to calculate the heat release rate. A surface area of 0.0088m2 was used to calculate the HRR per unit area.</p>
PMMA Pyrolysis Simulation – from Micro- to Real-Scale -- Dataset
<p>Dataset to the article "PMMA Pyrolysis Simulation – from Micro- to Real-Scale". It contains experiment data, FDS simulation and PROPTI input files, as well as the Jupyter Notebooks used to process the different data series.</p> <p> </p> <p>Published with the Fire Safety Journal: <a href="https://doi.org/10.1016/j.firesaf.2023.103926">https://doi.org/10.1016/j.firesaf.2023.103926</a><br> Preprint on arXiv: <a href="https://arxiv.org/abs/2303.17446">https://arxiv.org/abs/2303.17446</a><br> </p> <p>A video series explaining the different parts of this dataset is available on YouTube: <a href="https://www.youtube.com/playlist?list=PLWziITJoPnJKtVuaVudyO2Lz-OWaCE9Co">https://www.youtube.com/playlist?list=PLWziITJoPnJKtVuaVudyO2Lz-OWaCE9Co</a></p> <p>Recommended minimum download: "RunReports", "SmallerDirectories", "PMMA_MicroScale" and "PMMA_Cone_Aalto".</p> <p>Extract all files into the same directory, such that all the relative paths point to the correct locations.</p> <p>The data of the inverse modelling processes are stored in the "PMMA_MicroScale" and "PMMA_Cone_Aalto" archives.</p> <p>The "RunReports" archive contains all the data processing and analysis. This is, the notebooks to generate the plots from the IMP results, extracting the stoichiometry from the CHID.out files, writing the best material parameter sets into the parallel panel simulation templates and so forth.</p> <p>The data of the parallel panel simulations is distributed over a couple of *.rar archives, labelled "ParallelPanelTest_A" to "ParallelPanelTest_H". Their content should be extracted into a directory labelled "ParallelPanelTest", to allow the Python scripts to work as intended. Please refer to the video series for further information.</p> <p>The archive "SmallerDirectories" contains a couple of smaller assessments (compared to the parallel panel simulations), like the cone calorimeter GEOM to generate the flux map, flame height as well as the "GeneralInformation" directory. It is recommended to download this archive together with the "RunReports".</p> <p> </p> <p>Note: the data series labels used in the article differ from the ones used for the simulations.</p> <p>Simulations: Aalto_01, Aalto_02, Aalto_03, Aalto_04, Aalto_05, Aalto_06, Aalto_06b, Aalto_07</p> <p>Article: Cone_01, Cone_02, Cone_03, Cone_04, Cone_05, Cone_06, Cone_07, Cone_08</p> <p> </p> <p>Acknowledgments:<br> We gratefully acknowledge the computing time granted through JARA (project jjsc27) on the supercomputer JURECA at Forschungszentrum Jülich and through the project on the CoBra-system, funded by the German Federal Ministry of Education and Research with the grant number 13N15497. This research was partially funded by the German Federal Ministry of Education and Research with the grant number 13N15497.</p>
Speckle images from biaxial test on PMMA
<p>These images were captured during a biaxial test on a PolyMethylAcrylate cruciform sample. The actuators were driven based on the strain measured during the test using GPU integrated DIC.</p> <p>The speckle pattern was made by spraying black paint using an airbrush on a white coat of paint.</p> <p>The camera is a Ximea XiB (CB500MG-CM), the lens a canon EF 100mm, pixel size is 4.51 µm/pix</p> <p>The name of the images is "img_{count}_{time}.tiff" where {count} is the number of processed images {time} the instant the image was captured after the beginning of the test in seconds. The average time between two saved image 5.21s but is not guaranteed to be constant (std = 0.0364s). img_ref_{time}.tiff is the reference image used by the DIC algorithm.</p> <p>Not all indexes are available because only 1/100 images were saved for post-processing to limit the volume of data.</p> <p>This set of image can be used in many ways, including as a benchmark for comparing DIC algorithms. Since they are real-world images, the "real" displacement is not available.</p> <p>correl.zip contains a csv file with the results of the real-time integrated DIC used during the test. Because a few images were dropped due to limitations, make sure to use the timestamp to match the images and the csv.</p>
Data for "A nanoindentation study of attenuation in geological materials" - quartz, halite, olivine and PMMA
<p>Dataset for forced oscillations experiments with the nanoindenter for halite, pmma, olivine and quartz. The files are *.pkl format (pickle) and can be accessed with the "pickle" library in python. The name of each file contains: the name of the tested material, the oscillation period in seconds, the test number (multiple tests for each period). The oscillation amplitude is 10% of the test's load "P", unless stated otherwise - for example: A20 means that the amplitude is 20% of the load in that test. </p> <p>Each file contains the following columns: experiment time (in seconds), load (in mN), displacement of the indenter tip (in nm) and may or may not contain the indentation hardness H (in GPa) from the continuous stiffness measurement method - wich is not required for the calculation of attenuation.</p> <p>For any questions please contact Nir Badt.</p>
PMMA tensile test until failure, loaded in force
<p>This document present the tensile test results for PMMA (acquired from McMaster). Digital Image Correlation (DIC) was used to measure displacements during the test. Results obtained provide the stress-strain plot, the evolution of Poisson's ratio and Young's Modulus over time. Such results could be compared with simulation results or used as part of an experimental dataset.<br> Raw results and a complete dataset are provided with this data package.</p>
PMMA 3 point bending test until failure loaded in displacement
<p>This document present the 3 point bending test results for PMMA. Digital Image Correlation (DIC) was used to measure displacements during the test. Results obtained provide the force-strain plot over time. Such results could be compared with simulation results or used as part of an experimental dataset.<br> Raw results and a complete dataset are provided with this data package.</p>
Forced Oscillations On PMMA (1)
<p>Test #184<br> Type of Experiment: Forced Oscillations</p> <p>Sample: PMMA (#1)</p> <p>Experimental Conditions: </p> <ul> <li>Confining pressure: 3 MPa</li> <li>Pore Pressure: 0 MPa</li> <li>Seating Differential Stress: 2.5 MPa</li> <li>Amplitude of oscillating Stress: 0.8 MPa (Peak-to-peak)</li> <li>LVDTs: 2 high-resolution axial LVDTs and no radial LVDTs</li> </ul> <p>More details are in the Excel file, including the initial processing of the data before calibration and a list of experiments.</p>
Forced Oscillations On PMMA (2)
<p>Test #197<br> Type of Experiment: Forced Oscillations</p> <p>Sample: PMMA (#1)</p> <p>Experimental Conditions: </p> <ul> <li>Confining pressure: 10 MPa</li> <li>Pore Pressure: 0 MPa</li> <li>Seating Differential Stress: 5 MPa</li> <li>Amplitude of oscillating Stress: 1.0 MPa (Peak-to-peak)</li> <li>LVDTs: 2 high-resolution axial LVDTs and 4 radial LVDTs (no high resolution)</li> </ul> <p>More details are in the Excel file, including the initial processing of the data before calibration and a list of experiments.</p>
Quasi-static tensile properties of PMMA (Elium 188) and Epoxy (Epopox A-28) resins
<p>The quasi-static tensile properties of PMMA (Elium 188) and Epoxy (Epopox A-28) resins are summarised in Table 1. <br> </p> <ul> </ul> <table> <caption>Table 1. The average tensile properties of epoxy (Epopox A-28) and PMMA (Elium 188) resins</caption> <tbody> <tr> <td>Property</td> <td>Epoxy</td> <td> PMMA</td> </tr> <tr> <td>Young's modulus of elasticity (GPa)</td> <td>2.3 <span class="math-tex">\(± \)</span> 0.1</td> <td>2.6 <span class="math-tex">\(± \)</span> 0.1</td> </tr> <tr> <td>Tensile failure strength (MPa)</td> <td>53.7 <span class="math-tex">\(± \)</span> 1.1</td> <td>63.5 <span class="math-tex">\(± \)</span> 0.3</td> </tr> <tr> <td>Elongation at failure (%)</td> <td>6.1 <span class="math-tex">\(± \)</span> 0.4</td> <td>6.6 <span class="math-tex">\(± \)</span> 0.3</td> </tr> </tbody> </table> <p> </p> <p><strong>Summary of the materials</strong>:</p> <ul> <li>The epoxy was a standard resin (Epopox A-28, Amroy Europe, Lahti, Finland) polymerised by a polyether diamine hardener (Jeffamine D-23, Hunstman, Texas, USA) with a 35 wt% hardener to epoxy ratio. The resin was degassed before casting into an aluminium-made mould. The resin was cured following the manufacturer's instructions (i: at 90 °C for 24 h. ii: 150 °C for 2 h). The Epopox A-28 was used as an alternative for EPON 828 epoxy resin.</li> <li>The PMMA was in-situ polymerised at the ambient conditions by mixing a liquid methyl methacrylate thermoplastic resin (Elium 188, Arkema, Colombes, France) and dibenzoyl peroxide initiator (BP-50-FT1, United Initiators GmbH, Pullach, Germany) with 3 wt% initiators to resin ratio. The resin was degassed before casting into an aluminium-made mould. </li> </ul> <p><strong>Summary of the tensile testing</strong></p> <p>The quasi-static tensile tests were performed using a universal testing machine (model 5967, Instron, MA, USA). The testing was performed according to the ISO 527 testing standard. The dimensions of the dog-bone shape coupons were 4 mm (thickness) <span class="math-tex">\(× \)</span> 10 mm (width) <span class="math-tex">\(× \)</span> 170 mm (full-length). The gauge length was 50 mm. The specimen was prepared as 1A type in ISO 527. <br> The tensile tests were performed by 30 kN load cell and 2 mm/min displacement rate. The displacement was recorded by a clip-on extensometer.</p>
Dataset for CLOVER PMMA experiment
<p>A full experimental data set is provided. A sample made of PMMA is tested under quasi-static loading. The sample is a rectangle with 4 drilled holes. </p> <p>The experiment and its analysis using digital image correlation are detailed in 2 sheets. </p> <p>The dataset contains:</p> <p>- raw experimental data (load, displacement)</p> <p>- high resolution images</p> <p>- DIC data</p> <p> </p>
Dataset for TDCB PMMA experiment
<p>A full experimental dataset is provided. A sample made of PMMA is tested under quasi-static loading. The sample is a standard TDCB specimen. </p> <p>The experiment and its analysis using digital image correlation are detailed in 2 sheets. </p> <p>The dataset contains:</p> <p>- raw experimental data (load, displacement)</p> <p>- high resolution images</p> <p>- DIC data</p>
Data from: PMMA bone cement with L-Arginine/nano fish bone nanocomplex to generate apatite formation
<p>This study observed apatite growth in nano fish bone (NFB) processed from fish bone waste and used it in Polymethyl methacrylate (PMMA) bone cement. PMMA was synthesized using the emulsion polymerization method, and the content of the sodium dodecyl sulphate (SDS) surfactant was varied to control particle size and uniformity. Apatite growth is an approach for bone regeneration to optimize bone repair and restore bone function. Generally, this property is attributed to hydroxyapatite, which can be derived from fish bone waste. PSA characterization showed that the addition of SDS could reduce the particle size from 102.8 nm without SDS to 42.1 nm with 5 wt% SDS. SEM characterization revealed agglomeration due to the very small particle size at a 5 wt% SDS addition. The addition of NFB to PMMA produced bone cement with a 1.65 Ca:P content ratio and an average particle size of 757.5 nm. L-Arginine was also added to PMMA to increase the biocompatibility and antibiotic properties of the bone cement. Tensile strength tests were conducted on the bone cement samples. The BC-PMMA-1-NFB/L-Arg sample exhibited better tensile strength than commercial PMMA. The immersion test showed an increase in mass after seven days of immersion in the SBF solution, indicating the possibility of forming an apatite layer.</p>
Attachment force (mN) of bed bugs Cimex lectularius males on Perspex (PMMA) in relation to surface roughness and wettability
Open the record for dataset details and reuse information.
Data from: PMMA bone cement with L-Arginine/nano fish bone nanocomplex to generate apatite formation
Open the record for dataset details and reuse information.
NanIR-PMMA-RawData
<p>Raw data sets for manuscript "Interference effects in nanoscale infrared spectroscopy methods"</p>
Monte Carlo simulated absorbed dose distributions inside BluePhantom2 water phantom with PMMA walls for 220 MeV pencil proton beam
<p>This dataset consists of Monte Carlo simulated dose distributions inside 65x62x55 cm<sup>3</sup> BluePhantom<sup>2</sup> water phantom with PMMA walls for 220 MeV pencil proton beam. Contribution to the absorbed dose is provided separately for protons, photons+electron, and neutrons. Neutron and the total equivalent dose is also provided.</p> <p>Monte Carlo simulations used the MCNP6.2 code. Libraries used: HLIB=70h NLIB=00c PLIB=14p ELIB=03e PNLIB=70u. Particle cut-off energies used: CUT:P 4 keV, CUT:H 300 keV, CUT:E 2 keV, CUT:T,A,D,S,|,# j 1 MeV. Primary beam: monoenergetic 220 MeV proton pencil beam, beam profile full-width at half maximum = 1.5 cm.</p> <p>This is the result of the EMPIR 18HLT04 UHDpulse project.<br> </p>
Safety and Efficacy of Linnea Safe PMMA 30% Use for Gluteal Augmentation.
ClinicalTrials.gov study NCT06851494. IPD Sharing: NO. Countries: 0. Publications: 13.
Evaluation of Bone Regenerated With Guided Bone Regeneration (GBR) Using Polymethylmethacrylate (PMMA) Membrane
ClinicalTrials.gov study NCT06186232. IPD Sharing: Not stated. Countries: 0. Publications: 7.
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