“…X-ray computed tomography (XCT) provides three-dimensional observations of microstructure and may be applied during mechanical testing. Since the initial studies of Guvenilir (Guvenilir et al, 1997), in situ XCT has been applied to a wide range of materials including trabecular bone (Bay et al, 1999), wood (Forsberg et al, 2008), gypsum (Bouterf et al, 2014), graphite (Hodgkins et al, 2006; Marrow et al, 2016), ceramic matrix composites (Gao et al, 2016; Arhatari et al, 2017), and polymer matrix composites (Bie et al, 2017; Emerson et al, 2017; Garcea et al, 2017). The relative deformations between tomographs can be measured by digital volume correlation (DVC), which is a volumetric extension of the digital image correlation (DIC) method.…”