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.
Quick Answer. The American tradition of moving the tassel on graduation caps from the right side to the left side during the commencement ceremony signifies the recognition of earning a degree. It is sometimes called turning of the tassel.. Continue Reading.