Flash butt welds in a U.I.C. rail steel: an estimate of the fracture toughness (IM-FM-027)

Fatigue tests have recently been conducted on a number of flash butt welds in U.I.C. rail steels. The tests were conducted in anticipation of these grades (particularly grade C) being welded into track, Full rail section specimens were. tested in the conventional maimer in the rail resonance machine. The...