API 579 calculators

• Annex 9D: Residual Stress — API 579-1 (2021) Annex 9D — Welding residual stress profile through thickness
• Annex 9B: Stress Intensity Factor — API 579-1 (2021) Annex 9B — Mode I stress intensity factor library (plate, cylinder, sphere, hole, bar/bolt, nozzle, ring-stiffened, fillet weld — 42…
• Annex 9C: Reference Stress — API 579-1 (2021) Annex 9C — Reference stress / load ratio (plate, cylinder, sphere, nozzle, bar/bolt, heavy-wall)
• Part 9: Fracture Assessment (Level 2) — API 579-1 (2021) Part 9, §9.4.3.2 — FAD Level 2 fracture assessment, 5 crack geometries
• Part 9: Flaw Characterization — API 579-1 (2021) Part 9 §9.3.6 — Equivalent flaw dimensions for oblique and buried flaws

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