Here is a run down of each file.
Using an animated checkerboard shader as the Voronoi Source.
This time, the source for the fracture is a Circle Spline, add to this a vibrate tag and some dynamics.
Similar to the Circle Spline example, this uses a Rectangle Spline which is cloned and used as the source. Dynamics and random rotation add the motion.
Random Linear Spline
Use a simple linear spline as the source for fracturing and then randomise the position of the spline vertices along one axis.
Distribute source points along a spline using the Matrix Object and then animate the rate and variation.
Use a particle emitter and animate the particle visibility to increase and decrease the fracturing.