Interesting topic No time for an in depth response just now. My through the life experiences have enabled me to witness just about every type or cause of failures imaginable many caused my me while going through the learning curve starting at a very young age. but by far the most interesting ones were the ones others caused from shear lack of attention to the task at hand IE using the wrong fastener for the task over / under torquing, using too short of a bolt in blind hole assembly stripping out the hole or bolt then trying to compensate by replacing with a too long bolt and washering up to compensate for over length when the proper way to do the repair would have been to make a thread repair in the hole by either drilling out threading and installing a thread repair incert or drilling out threading and installing an oversized fastener if possible or a stepped down stud so the assembly would be held with a nut, or extreme cases having to drill out the hole to a taper then filling the hole with weld re drilling and taping the hole back to original
I learned early on to never allow a helper to use my extended length combination wrenches during re assembly of anything always give them a shorter version and a torque wrench preferably one that is adjustable with a torque limiting clutch not one that simply clicks at the preset torque other wise they inevitably would over torque