Dynamic Mode I Crack Propagation in Epoxy Material: Unpatched vs. Symmetrically Patched Configurations (Dynamic Photoelasticity)

The field of view was captured at a spatial resolution of <b>192 × 192 pixels</b>.</p><p dir="ltr"><br><b>Specimen Configurations & Results:</b><br>The dataset includes three distinct experimental configurations, each represented by a sequence of 9 frames (spanning from approximately 210 µs to 250 µs after crack initiation):</p><p dir="ltr"><br></p><ol><li><b>Dynamic Fracture without Patch:</b> Baseline specimen. The isochromatic fringe patterns reveal the classic Mode I crack tip stress field, demonstrating unimpeded crack propagation through the epoxy matrix.</li><li><b>Dynamic Fracture with Symmetric Patch I:</b> The specimen includes a symmetric patch configuration.

The presence of the patch alters the local stiffness and wave impedance, which is clearly reflected in the distortion and interaction of the photoelastic fringes with the patch boundaries.</li><li><b>Dynamic Fracture with Symmetric Patch II:</b> A second symmetric patch configuration. The high-speed sequence captures the crack's interaction with the patch interface, showing variations in fringe density and crack tip stress intensity compared to the unpatched and Patch I configurations.</li></ol><p dir="ltr"><b>Data Contents:</b></p><ul><li>Three high-resolution composite images (each containing 9 sequential frames).</li><li>Each frame includes a metadata overlay indicating the time (µs), frame rate (fps), frame number, and spatial resolution.</li></ul><p dir="ltr"><b>Associated Research:</b><br>This experimental data supports research in dynamic fracture mechanics, crack arrest mechanisms, and the design of toughened composite materials.<br></p><p dir="ltr"><br></p><p dir="ltr"><b>Research Portfolio:</b> <a href="sites.google.com/view/pravinkumarghodake/research" target="_blank" rel="noreferrer">sites.google.com/view/pravinkumarghodake/research</a></p>