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Characterization data on the effects of micro-computed tomography-based x-ray radiation on vinyl nitrile foam
This dataset contains information from investigating the effects of micro-computed tomographic imaging irradiation on vinyl nitrile foam and code for a finite element user material to model these effects. More details are available in the README.txt and data_summary.txt files in the main directory.Data in the repository includes exposure and dosage calibration files (.csv, .dat, .mat, .in, .png. .jpg), imaging data from optical microscopy (.tif, .zvi) and scanning electron microscopy with energy-dispersive spectroscopy (SEM EDS) (.tif, .png, .docx). Also included is characterization data from differential scanning calorimetry (DSC) with metadata (.tprc, .tseq), test data (.tri, .csv) and analysis metadata and data (.py, .m, .tri, .xls, .xlsx, .pdf), characterization results data via dynamic mechanical analysis (DMA) and stress relaxation (SR) with metadata (.tprc, .csv), test data (.tri, .csv) and analysis metadata and data (.py, .m, .tri, .xls, .xlsx, .pdf). Data from characterization via differential scanning calorimetry metadata (.tprc, .tseq), test data (.tri, .csv) and analysis metadata and data (.py, .m, .tri, .xls, .xlsx, .pdf). Data from characterization via Fourier transform infrared spectroscopy (FTIR) generates metadata (.spa, .csv, .exp), test data (.spa, .csv) and analysis metadata and data (.xls, .csv, .pdf), and data from Soxhlet extraction (.xlsx). Each test type includes textual descriptions (.txt) and/or photographs (typically .jpg) to aid in completeness, describe measurands and measurement uncertainties, and explain the file organization. A .zip file containing code for a calibrated finite element user material for mechanical model that includes radiation and temperature effects is also included in the main directory. Please contact the authors with any questions.This dataset consists of approximately 335 files that require ca. 605 MB of storage.
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Influence of polymer additives on gas-phase emissions from 3D printer filaments
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The data set contains the details on the thermal degradation that takes place during 3D printing of six commercially-available 3D printer filaments containing either carbon nanotubes or metal particle additives. Volatile organic compound (VOC) emissions are measured and used to develop reaction mechanisms. This dataset is associated with the following publication: Potter, P.M., S.R. Al-Abed, F. Hasan, and S.M. Lomnicki. Influence of polymer additives on gas-phase emissions from 3D printer filaments. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 279: 138543, (2021).
Influence of polymer additives on gas-phase emissions from 3D printer filaments
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The data set contains the details on the thermal degradation that takes place during 3D printing of six commercially-available 3D printer filaments containing either carbon nanotubes or metal particle additives. Volatile organic compound (VOC) emissions are measured and used to develop reaction mechanisms. This dataset is associated with the following publication: Potter, P.M., S.R. Al-Abed, F. Hasan, and S.M. Lomnicki. Influence of polymer additives on gas-phase emissions from 3D printer filaments. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 279: 138543, (2021).
Sahle SDMP FRAGMENTATION Epoxy-with MWCNT
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Data include changes in aging of weathered materials using optical macroscopy, Raman and FTIR spectroscopy, thermogravimetric analysis and Scanning electron microscopy. The release of fragments and particles were determined using imaging methods. The influence NPs interaction with the polymer matrix on their environmental release has not been well studied. The current paper focuses on some analytical techniques suitable for evaluating the effects of weathering on the detection and characterization of NPs, including Fourier transforms infrared spectroscopy (FT-IR), optical microscopy, contact angle measurements, gravimetric analysis, confocal microscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Raman spectroscopy. The study also includes the toxicity of released particles and organic compounds. This dataset is associated with the following publication: Sahle-Demessie, E., C. Han, E. Varughese, B. Acrey, and R. Zepp. Fragmentation and release of pristine and functionalized carbon nanotubes from epoxy-nanocomposites during accelerated weathering. Environmental Science: Nano. Royal Society of Chemistry, Cambridge, UK, 10(7): 1812-1827, (2023).
AM Bench 2022 Vat Photopolymerization Challenge Data: Resin properties, light engine calibration, and calibration print dimensions (AMB2022-07)
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This Photopolymer AM-Bench 2022 Challenge is to accurately model the relationship between photopatterned print fidelity and cure depth to exposure time with four resins, which serve to orthogonally probe the relationship between resin reactivity and viscosity. The data sets included here are broken down into three categories and are as follows: (1) resin characterization: Fourier transform infrared spectroscopy and rheometry, (2) light engine characterization: photomask dimensions, beam profilometry and radiometry, and (3) cure depth and profile: laser scanning confocal microscopy.
Enhanced durability of CNT based hierarchical composites subjected to accelerated aging environments.
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Flexure testing, SEM, FTIR_ATR, Acoustic testing, Electrical testing, XRD, DSC, TGA
X-ray Micro-Tomography (micro-CT)
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X-ray micro-tomography (micro-CT) is a non-destructive imaging technique that provides resolution of material microstructures in three dimensions at scales from hundreds of nanometers to centimeters. The technique is used at NASA Ames Research Center to investigate a variety of advanced materials, including lightweight composite heatshields for atmospheric entry, woven materials, parachute textiles and meteoroids. Data are collected using both synchrotron and laboratory-based X-ray sources. Synchrotron micro-CT is performed in collaboration with the beamline 8.3.2 at the Advanced Light Source at Lawrence Berkeley National Laboratory. High-fidelity digital representations of microstructures obtained from micro-CT are used as framework to perform predictive simulations of effective material properties and material response using high performance computing.
Data Files Associated with Orthogonal Machining Tests on Carbon Fiber Reinforced Plastics (CFRP)
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This dataset is a supplement to the paper titled "Fiber Orientation Angle Effects in Machining of Unidirectional CFRP Laminated Composites" (https://doi.org/10.1016/j.jmapro.2014.06.001). High speed videography of eight cutting tests were performed to study how cutting angle effects cutting force and workpiece surface finish. A description of the experimental setup, as well as a discussion of results, are given in the paper. Files containing video, thermal, force, and synchronization data for the tests are available for downloading. Detailed description is provided in the document "CFRP_Machining_Data_Description.pdf".
Data Set
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Each sheet in the current spreadsheet contains data that was generated by the USEPA ORD and used in the manuscript entitled: Particle and Vapor Emissions from Vat Polymerization Desktop-scale 3-Dimensional Printers. For the research project the USEPA ORD was responsible for identifying the elemental composition and concentration for each of the 5 different resin used in the project. The chemical composition and concentration were determined for the as purchased uncured resin and a cured resin printed object. Data produced from the research that was included in the manuscript was presented in Table 3. Identities of elements in bulk feedstock resin, airborne particles emitted during vat polymerization 3-D printing, and printed objects; and Supporting Information Table S5 Elemental content of bulk grey liquid resins and printed solid objects by ICP analysis (mg/kg) The data presented in Table 3 is presented in Sheet2 and the data presented in Table S5 is located in Sheet3. This dataset is associated with the following publication: Stefaniak, A.B., L.N. Bowers, A.K. Knepp, T.P. Luxton, D.M. Peloquin, E.J. Baumann, J.E. Ham, J.R. Wells, A.R. Johnson, R.F. LeBouf, F.-. Su, S.B. Martin Jr., and M.A. Virji. Particle and vapor emissions from vat polymerization desktop-scale 3-dimensional printers. JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE. Taylor & Francis, Inc., Philadelphia, PA, USA, 16(8): 519-531, (2019).
Data Set
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Each sheet in the current spreadsheet contains data that was generated by the USEPA ORD and used in the manuscript entitled: Particle and Vapor Emissions from Vat Polymerization Desktop-scale 3-Dimensional Printers. For the research project the USEPA ORD was responsible for identifying the elemental composition and concentration for each of the 5 different resin used in the project. The chemical composition and concentration were determined for the as purchased uncured resin and a cured resin printed object. Data produced from the research that was included in the manuscript was presented in Table 3. Identities of elements in bulk feedstock resin, airborne particles emitted during vat polymerization 3-D printing, and printed objects; and Supporting Information Table S5 Elemental content of bulk grey liquid resins and printed solid objects by ICP analysis (mg/kg) The data presented in Table 3 is presented in Sheet2 and the data presented in Table S5 is located in Sheet3. This dataset is associated with the following publication: Stefaniak, A.B., L.N. Bowers, A.K. Knepp, T.P. Luxton, D.M. Peloquin, E.J. Baumann, J.E. Ham, J.R. Wells, A.R. Johnson, R.F. LeBouf, F.-. Su, S.B. Martin Jr., and M.A. Virji. Particle and vapor emissions from vat polymerization desktop-scale 3-dimensional printers. JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE. Taylor & Francis, Inc., Philadelphia, PA, USA, 16(8): 519-531, (2019).
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