BS 7910 Fracture Assessment Engine

BS 7910:2019 Clause 7 — FAD assessment with $K_I^P+K_I^S$, $\rho$ and reserve factors

BS 7910 Clause 7 — Fracture Assessment Engine

This is an orchestration engine: it does not introduce new physics, but assembles the verified building blocks (Annex M K_I, Annex P \sigma_{ref}, and the Option 1 FAD curve) into the complete BS 7910:2019 Clause 7 procedure.

Assessment point (Eq. 7.39 / 7.40)

K_r=\frac{K_I^P+K_I^S}{K_{mat}}+\rho \qquad L_r=\frac{\sigma_{ref}}{\sigma_Y}

The flaw is acceptable when the point (L_r, K_r) lies inside the failure assessment line f(L_r) and L_r \le L_{r,max} (Section 7.3.1). If K_I^S < 0 it is set to zero together with \rho (Section 7.3.6).

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