So they need to crash them, determine how to fix them to be stronger, test them and present it within 2 months. I would think that they are closer to figuring out how to fix them at this point. But then again once they understand the weaknesses, computer modelling can tell you what to fix.
The compression test is a well known and longstanding procedure. Basically, you put the trains in a test apparatus (a big vise, in principle) and apply a carefully measured level of force. The frame either distorts, or it doesn't.
I don't know exactly how the teardown test will be performed, but there are well understood ways of looking for cracks in metal.
Those two shrink-wrapped cars that were photographed over the weekend appeared to have had all the underframe equipment removed. One has to think that was preparation for one or the other test, so the frames could be examined more easily.
- Paul