Answer Happy

b) A hole of diameter 4 mm is now drilled through the centre of the 12 mm face of the stepped plate to allow a cable to pass through it as figure below. A 4 mm is sufficient for the cable to fit, but an 8 mm drill bit is readily available. Will a crack be more likely to initiate at the larger hole, the smaller hole or at the fillet? a Plate thickness 160mm 12.0 mm 90 mm F-9800 N 1.5 mm radius 110 Marks