I posted a photo of my nose wheel fork failure on 4/26/16 on the Nose Wheel Crack thread started by Andre Mendonca. The welds on the nose forks are significantly different. The weld bead on the replacement nose fork is much wider with a larger heat affected area radiating out from the edge of the weld indicating good weld penetration.
The original nose fork fractured completely as I was removing the tire. This cross section shows that there is no penetration in most of the weld. There is a pretty little fillet weld sitting on top of the “joined” pieces of metal to quote my structures guru.
Bob Kibby (N712BK, 295 hrs)