Predicting interfacial delamination thresholds in recycled boxboard requires quantifying Mode II shear fracture toughness and adjusting crease matrix channel dimensions to prevent hinge failure under cyclic loading.
Coupled hygro-mechanical finite element modeling prevents chilled transit collapse by predicting rapid condensation softening and interface delamination.
Rate-dependent cohesive zone models prevent high-speed converting delamination by accurately predicting paperboard interlaminar shear failure at production speeds.
Predicting paperboard delamination requires balancing Z-direction shear strength to permit core separation while preventing outer liner tensile fracture.
Dynamic strain rate modeling predicts multi-ply boxboard Z-direction compression and interlayer shear collapse during high-speed converting and package drops.
High strain rate board creasing requires matching tool clearance to middle-ply shear yield to prevent surface fracture.
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