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Investigation of Delayed Fracture Evaluation Method Simulating Processing Forming Part
Application of the high strength steel sheet to complicated forming parts has been studied as the weight of automobiles is reduced. Complex strain after forming may affect delayed fracture. Therefore, in this research, we devised a new delayed fracture evaluation method using a forming prediction technology, a forming limit diagram. Forming limit diagram was prepared and stress and hydrogen were applied to each forming mode single axis, plane strain, biaxial strain , and crack generation wasdoi:10.3323/jcorr.68.116 fatcat:a5ddhxhq7bfure3q2ifgithdxq