R. K. Everett, A. B. Geltmacher, K. E. Simmonds, A. C. Lewis, Naval Research Laboratory, Washington, DC
Advances in x-ray imaging, automation, and computer processing speeds have allowed the development of x-ray tomography systems which can comfortably sit on a laboratory workbench. These devices can potentially replace the synchrotron sources and supercomputers required only a few short years ago. In this talk we revisit the tomographic imaging issues associated with ductile damage in HY-100 steel sectioned from interrupted notched tensile test specimens. Higher x-ray energies and better voxel resolutions are achievable with the table-top unit. A comparison of tomograms showing void growth and coalescence (number, spatial arrangement, linking) will be presented and consequences for finite element modeling will be discussed.
Summary: Advances in x-ray imaging, automation, and computer processing speeds have allowed the development of x-ray tomography systems which can comfortably sit on a laboratory workbench. These devices can potentially replace the synchrotron sources and supercomputers required only a few short years ago. In this talk we revisit the tomographic imaging issues associated with ductile damage in HY-100 steel sectioned from interrupted notched tensile test specimens. Higher x-ray energies and better voxel resolutions are achievable with the table-top unit. A comparison of tomograms showing void growth and coalescence (number, spatial arrangement, linking) will be presented and consequences for finite element modeling will be discussed.
