Flex-PCB Dynamic Bend-Radius Copper Fatigue & Stiffener Overlap Checker

Deterministic IPC-2223 neutral-axis strain epsilon = t_dist / (2*R_bend) + Coffin-Manson low-cycle copper fatigue life engine (.gbr, .pdf, .json, .zip) built for PCBWay, Würth Elektronik, Altium Designer, KiCad — zero-upload ephemeral Wasm RAM execution.

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