Originally Posted by
greg5
I would find it pretty interesting if 3D printed parts are making it into structural parts of the aircraft. How do they deal with the qualification of the parts? Is there stress testing of these parts? Non-destructive/destructive testing? I suppose if they get the plans/processes from the manufacturer, this could be okay. Obviously, you can't do this for all parts. E.g., it will be difficult to 3D print a 777 titanium landing gear assembly.
3d printing of parts requiring any kind of structural integrity is still some way off - too many issues with both defects from the metal powders (porosity) and printing defects. Fine though for lightly loaded parts in non-critical locations (e.g. a new joining rivet or hinge for a table or seat.