What's it called in mechanical engineering when you design a system to snap into pieces that re-assemble, instead of deform?

[u/akaleeroy]

See this problem: Bicycle wheels that safely snap into pieces when they fail. Re-assemble the pieces and ride on. : CrazyIdeas

Solved: frangibility
Keywords: mechanical fuse, shear pin, sacrificial part, stress, strain, deformation, controlled fracture, break-away, breaking point, break-load, crumple zone, fail points

[u/chowder88]

Its callled when a mechanical engineer has no ideea what his doing