LAUSR

destructive manner. 1-3 Simply put, absorption-contrast radiographs of a sample are collected as a function of either sample rotation or source-detector rotation (i.e., gantry systems). The radiographs are mathematically reconstructed to provide a 3D dataset (i.e., tomogram) which can be used for sample/part inspection of defects, image quantification, or as inputs into finite element analyses. The spatial resolution range for this technique is wide and can vary based on the choice of the X-ray source (e.g., micro-focus or nano-focus tube sources, synchrotron sources, linear accelerators, etc.), magnification modality (e.g., geometric or optical), and detection method (e.g., flat panel detector, objective lens coupled to a chargecoupled device (CCD) camera). Sub-micrometer resolution can be achieved with 3D X-ray microscopy, which typically employs a micro-focus X-ray source and objective lens/CCD camera system to achieve