{
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  "accessLevel": "public",
  "bureauCode": [
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  "contactPoint": {
    "fn": "Newell Moser",
    "hasEmail": "mailto:newell.moser@nist.gov"
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  "description": "Abstract (from manuscript): In situ X-ray tomography experiments provide powerful insight into material deformation and damage evolution under mechanical load.  However, laboratory-based tomography setups often suffer from long acquisition times that hamper real-time observation.  In this work, we demonstrate a deep-learning-based reconstruction method capable of high-quality volume reconstructions from sparse (10X fewer) projection datasets.  We apply this method to in situ tensile experiments on additively manufactured Inconel 718 dog-bone specimens, significantly increasing our sampling density from only a few tomography scans per experiment to over 20 scans at different load steps.  We compare conventional FDK reconstructions using 1001 projections with both (a) FDK using only 101 projections, and (b) our trained deep-reconstruction (DR) model with 101 projections.  We show that the deep-reconstruction images closely match those from the full-projection FDK, enabling effective 3D segmentation and quantification of evolving porosity in the test samples.  The data here demonstration our approach to increasing data throughput and sampling density for in situ studies.\n\nData Abstract\n\nThis dataset accompanies the publication \"Accelerating In Situ X-ray Tomography\nUsing Sparse Projections and Deep Learning.\" It contains reconstructed X-ray\nmicroscopy data and analysis workflows used to generate the results presented\nin the manuscript.\n\nThe repository is organized as follows:\n\nImage Data: TIFF stacks representing both deep-learning-based and\nFeldkamp-Davis-Kress (FDK) reconstructions of in situ X-ray tomography\nmeasurements. These reconstructed volumes form the basis of all subsequent\nanalysis.\n\nAnalysis Workflows:\n\nP2_dummy_segment_final.ipynb: Jupyter notebook for segmentation and quantitative\nanalysis of the reconstructed image stacks. This workflow produces VTK mesh\nfiles for visualization of segmented pore structures and saves corresponding\nPKL files containing porosity statistics.\n\nP2_dummy_visualization_final.ipynb: Jupyter notebook for generating the plots\nincluded in the publication. This notebook consumes the porosity statistics\n(PKL files) generated in the segmentation step and also requires the\naccompanying loadcell_final file containing the experimentally measured\nforce–displacement data.\n\nTogether, these resources provide both the raw image reconstructions and the\ncomplete analysis pipeline, from segmentation to visualization, enabling\nreproduction of the figures and quantitative results reported in the\nmanuscript.",
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  ],
  "identifier": "ark:/88434/mds2-3876",
  "issued": "2025-08-26",
  "keyword": [
    "3D Imaging",
    "In-situ deformation",
    "Machine Learning",
    "Solid Mechanics",
    "X-ray Computed Tomography"
  ],
  "landingPage": "https://data.nist.gov/od/id/mds2-3876",
  "language": [
    "en"
  ],
  "license": "https://www.nist.gov/open/license",
  "modified": "2025-06-24 00:00:00",
  "programCode": [
    "006:045"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "National Institute of Standards and Technology"
  },
  "theme": [
    "Manufacturing:Additive manufacturing",
    "Materials:Materials characterization",
    "Metrology:Dimensional metrology"
  ],
  "title": "Dataset for Accelerating In Situ X-ray Tomography Using Sparse Projections and Deep Learning"
}