Data and code associated with the publication: Crack paths in functionally graded plates: a phase-field simulation dataset

We introduce a phase-field fracture simulation dataset capturing crack propagation in a functionally graded plate with two circular inclusions of contrasting stiffness (hard/soft). The plate is loaded in Mode I under displacement control with the bottom edge fixed and the remaining boundaries traction-free. Four inclusion configurations (hard–hard, hard–soft, soft–hard, soft–soft) are studied. For each configuration, 1,000 realizations with randomized initial crack-tip locations are advanced through 31 quasi-static load steps using adaptive mesh refinement to efficiently resolve crack–inclusion interactions. The dataset provides displacement fields, phase-field damage, and load–displacement curves; all fields are also interpolated to a uniform 128×256 grid with predefined 900/100 train/test splits and utility scripts for generation, preprocessing, and visualization. This resource supports benchmarking and development of data-driven and physics-informed models for fracture in heterogeneous materials.