For laser welds in thick section steel, the main cause of solidification cracking is the weld profile shape. The high depth to width ratio of laser welds causes restraint and means that high thermal stress acts across the weld where the solidification fronts meet, causing centreline cracking.
Two days later they will participate in a Rose Ceremony as the final step in their graduation process. While a rose is symbolic for many things, the School of Nursingâs Jasmine Clark says it has become a traditional event at UBC and a time-honoured tradition.
1. Move tassels from right to left in a traditional ceremony. In most traditional graduation ceremonies, all students begin with their tassel on the right side of the cap. After the student receives a diploma, he or she moves the tassel onto the left side.