Laser-launched flyer plates are tiny bullets that can be used to study fragmentation of metal sheets or foils on a tabletop. In ductile fragmentation the sample stretches until it reaches the breaking point. In brittle fragmentation the sample cracks and shatters.
For Defense applications, most bombs consist of energetic ingredients and a metal casing. This casing is generally not energetic so it is deadweight. It would be useful to develop metal casings that are ductile so they can be rolled into casings but which are brittle so when the bomb detonates they fragment in a controlled manner. Even better if the fragments are energetic or pyrophoric (reacts with air). If the fragments are too big (e.g. if the casing splits into two) they are unlikely to hit any target and if they are too small (e.g. dust) they are too small to do any damage.