Class 143 wheel web cracks assessment of crack growth in service and description of the factors determining the probable mechanism of crack growth (TM-VST-001)

Circumferential cracks have developed from balance weight holtholes in the wheel webs of Class 143 units. As part of the investigation to determine the cause of the cracking, NDT crack growth records were analysed and two observations of particular interest emerged:- (i) a seasonal effect of lower crack growth during...