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.
Honoring The School And The Student | | Graduation Tassel Gold | Black. This ornament has been worn for hundreds of years. They are worn on the mortarboard cap on the right side before the diploma is granted. After graduation, it is moved from hanging on the right to the left side. It is strictly a symbolic gesture, but it can literally bring tears to the eyes of parents, friends and family. It's one sure way that expresses final completion of your program and the earning of your degree.