By means of stereomicroscopy and scanning electronic microscopy(SEM),the fracture mode and mechanism of the broken K18 superalloy cast blade in a supercharger turbo were investigated.
This comes in many forms - figuring out the koan (or riddle) of Zendo, getting the pieces into place in Ubongo or FITS, or figuring out how to use your pieces to build a route, as in Turbo Taxi.