Durability desks care about cycles, spectra, and crack growth — not only peak static stress. HENSTRUCT covers Goodman/Basquin, ASTM E1049 rainflow Miner, LCF, and Paris DT fracture proxies.
Spectrum first
Define the flight spectrum honestly. Rainflow counting only helps when the load history matches the mission.
HCF vs LCF
High-cycle vibration fatigue and low-cycle manoeuvre fatigue need different curves and safety factors. Document which path you used in the report.
Fracture when required
Paris DT and near-tip K proxies support inspection-interval conversations — they do not replace a full fracture-mechanics programme when certification demands it.
How HENSTRUCT helps you act
Attach fatigue MoS to static baselines. Contact Hendoi for product demos.