Harvard WAM Seminars
Can we predict the path of a crack, and the shapes of pieces when something beaks ?
This is a difficult question in general.
But we will see on two experiments leading to oscillating and spiraling crack patterns,
that when it comes to thin sheets, tearing can be very reproducible.
In fact we show that crack propagation follows very simple geometrical rules that can be deduced from fracture mechanics.
I will also try to show that cracks propagation has deep similarities with surface tension problems.
Harvard School of Engineering and Applied Sciences