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.
Students commonly wind their honors program cord and their major or minor cord together to create one multicolored cord. Other honor programs may require graduates to wear special cords. For example, graduates who are also members of Lambda Pi Eta, a nationally recognized honor society for communication majors, may also wear crimson colored cords on graduation day. A female graduate wears a crimson sash and tassle.