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.
King's College London graduands wearing academic dresses without caps. Graduation is getting a diploma or academic degree or the ceremony that is sometimes associated, in which students become graduates. Before the graduation, candidates are referred to as graduands. The date of graduation is often called graduation day. The graduation ceremony itself is also called commencement, convocation or invocation.