Core Impact Crack, impact damage, sub-surface fracture, Hertzian cone, BVID, foam collapse, material failure.
Similarly, ultrasonic testing (tapping to listen for pitch changes) can be unreliable for small CICs. The only reliable detection methods are: core impact crack
Take a hard, dry biscuit (or cookie). Tap it sharply on the table. The outside looks flawless—no crumbs. However, when you twist the biscuit, it crumbles instantly along internal fault lines. Those fault lines are core impact cracks. The tap created a fracture network inside the dense matrix without breaching the surface. Tap it sharply on the table
The crack wasn't just a hole in the ground; it was a wound in reality. From the rift, a strange, bioluminescent vapor began to leak, defying gravity and drifting upward in iridescent ribbons. Cities near the fault lines were silenced instantly, replaced by a low, rhythmic thrumming that felt like a heartbeat. The Core Sentinels Those fault lines are core impact cracks
This happens frequently in: