nuggets. All the XCT scans were carried out using a Hytec Edge CT machine at Jesse Garant &Associates. The prefilter used is
0.5 mm Molybdenum. The tube voltage is 165 kV and the tube current is 300 μA. The source to object distance is 210 mm and
the source to detector distance is 880 mm.
In order to follow damage evolution during fatigue testing, interrupted fatigue testing was conducted on 4 specimens, two
with and two without the addition of adhesive prior to welding. Testing was conducted with a maximum load level of 2322 N
and tests were interrupted every 20,000 cycles until fatigue failure. During each interruption, specimens were taken from the fatigue
testing machine for XCT scanning to obtain 3D models of the damage evolution.