Fig. 3 | Scientific Reports

Fig. 3

From: Deformation mechanisms in marathon running shoes elucidated by X-ray micro-computed tomography and digital volume correlation analysis

Fig. 3

Digital Volume Correlation (DVC) analysis is a technique used to measure and quantify the internal deformation of materials by comparing two volumetric datasets obtained at different states or time steps. A sub-volume from a reference dataset at Time Step 1 is tracked and matched to its corresponding deformed position in a subsequent dataset at Time Step 2, yielding displacement and strain fields. The approach relies on correlating grayscale intensity patterns within sub-volumes across 3D datasets. When applied to X-ray Computed Tomography (XCT) data of the Marathon Midsole sample, DVC allows non-destructive, high-resolution characterization of internal material deformation and strain evolution during mechanical loading (modified after Chawla and Ganju3.

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