K
I
—
K
IC
—
Margin
—
SAFE
σ
yy
+
📐 LEFM Crack-Tip Stress Field (2D)
K
I
= Yσ√(πa) — full angular near-tip field σ
yy
(r,θ) = K/√(2πr)·cos(θ/2)[1+sin(θ/2)sin(3θ/2)]
Material (K
IC
)
Steel
Aluminium
Ceramic
K
IC
of material
—
Loading & Geometry
Applied stress σ
100 MPa
Crack half-length a
20 mm
Geometry factor Y
1.00
Fracture Assessment
K
I
—
K
IC
—
K
I
/K
IC
—
0
K
IC
Field Display
Show σ
yy
heatmap
Show radial contour rings