collisionfracture
Collisionfracture is a term used in theoretical materials science to describe a fracture process in which two or more propagating crack fronts meet or intersect during loading, leading to an abrupt or accelerated fracture event. It is not a standard term in most classical fracture mechanics texts, but appears in discussions of crack interaction and dynamic fracture phenomena.
Mechanism involves interaction of stress fields; the energy release rates, due to superposition, determine whether the
Occurrence and examples: Collisionfracture is discussed mainly in dynamic or impact loading conditions in brittle or
Modeling and implications: Predicting collisionfracture requires beyond-linear elastic fracture mechanics; numerical methods such as cohesive zone
See also: crack growth, fracture mechanics, crack coalescence, dynamic fracture, phase-field fracture.