Table 2 A list of features used to train BiLSTM model for predicting Φ^crit 23

λ₁, λ₂, λ₃, λ₄

Angles formed by the trace of the slip planes 1 to 4 with \(\overrightarrow{r}\) on the radial plane

Ω_max, Ω_min

Maximum and minimum tilt angles of the four slip planes relative to the crack orientation

Γ

A binary variable indicating whether a CFP is at the intersection of a grain boundary

λ_max(Ω), λ_min(Ω)

Slip plane angle having the maximum and minimum tilt angles

\(\left\vert \gamma \right\vert\)

Absolute angular position of CFP

n_grains

Number of grains intersecting the radial probe

λ_max1(m), λ_max2(m), λ_max3(m), λ_max4(m)

Slip plane angles sorted based on the maximum Schmid factor of the respective slip plane

Φ^k−1

Kink angle at crack growth increment k − 1

ω₁, ω₂, ω₃, ω₄

Disorientation angle between the grain containing the CFP and the grain containing a probe point that intersects with the trace of the slip planes 1 to 4

\({\Phi }_{{\rm{max}}({\epsilon }_{{\rm{eq}}}^{p})}\)

Angle along the radial probe having the maximum equivalent plastic strain extracted using the micromechanical fields at k = 0

\({\Phi }_{{\rm{max}}({M}_{{\rm{micro}}})}\)

Angle along the radial probe having the maximum micromechanical Taylor factor extracted using the micromechanical fields at k = 0