A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
AbstractLinear Elastic Fracture Mechanics (LEFM) constitutes a numerical correlation between the acting tensile stress, the defect size and the fracture toughness. Usually initiation of material separation is considered to be the critical condition. This, however, holds only for those cases, in which the weakest microstructural area can be located and tested. If this is not the case, a crack will be initiated somewhere else and the fact that it will grow from there onwards has to be considered.Crack propagation is possible in ductile or in cleavage manner. If ductile propagation is present, an approach may be adequate to be applied. However, if cleavage is triggered, timely arrest of the running crack becomes the only possibility to prevent the separation of the piece.
AbstractLinear Elastic Fracture Mechanics (LEFM) constitutes a numerical correlation between the acting tensile stress, the defect size and the fracture toughness. Usually initiation of material separation is considered to be the critical condition. This, however, holds only for those cases, in which the weakest microstructural area can be located and tested. If this is not the case, a crack will be initiated somewhere else and the fact that it will grow from there onwards has to be considered.Crack propagation is possible in ductile or in cleavage manner. If ductile propagation is present, an approach may be adequate to be applied. However, if cleavage is triggered, timely arrest of the running crack becomes the only possibility to prevent the separation of the piece.
Crack initiation, propagation and arrest criteria for steel structure safety assessment
Varga, T. (author)
Structural Safety ; 12 ; 93-98
1993-01-01
6 pages
Article (Journal)
Electronic Resource
English
Crack initiation, propagation and arrest criteria for steel structure safety assessment
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