Mechanics
Advanced LEFM fracture assessment
LEFM analysis with four documented geometries, KIC criterion and inverse allowable-stress and crack-length solutions.
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LEFM analysis with four documented geometries, KIC criterion and inverse allowable-stress and crack-length solutions.
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Evaluate K = Yσ√(πa), the K ≥ KIC criterion and inverse limits for documented crack geometries.
Below fracture threshold
1.1323
17.02953 MPa√m
0.378434
317.0962 MPa
22.11572 mm
a is measured from the edge; W is plate width. Polynomial approximation for remote tension; 0 < a/W ≤ 0.6.
LEFM assumes linear elasticity, homogeneous material, Mode-I dominance and small-scale yielding. It does not replace a code assessment or thickness- and temperature-specific KIC data.
Model source: Tada, Paris and Irwin edge-crack polynomial, catalogued in USAF DTD Handbook Section 11.3