Fracture Resistance of Sheet Metals and Thin-Wall Structures. Part 2. Research Objectives, Background, and Fundamental Novelties

The paper considers the problems within an extensive research program addressing the crack propagation in flat and tubular specimens of brittle and plastic materials of different physical nature. Based on implementation of the program, the authors have elaborated scientific fundamentals for a new approach to fracture analysis of sheet metals and thin-wall structures. It is shown the task of high priority for formulating a practically acceptable transferability law is to obtain experimental data on evolution of the crack void geometry starting from the crack initiation and till the specimen breakdown.