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.
What is the order of the ceremony? For the spring and summer commencements, the order is: doctoral, masters, bachelors. For the winter commencement, there are separate graduate and undergraduate ceremonies. All students are expected to stay for the entire ceremony regardless of when they cross the stage.