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Assessment of notched structural steel components using failure assessment diagrams and the theory of critical distances

Abstract: When the structural integrity of notched components is analysed, it is generally assumed that notches behave as cracks, something which generally provides overconservative results. The proposal of this paper consists, on the one hand, in the application of the theory of critical distances for the estimation of the notch fracture toughness and, therefore, for the conversion of the notched situation into an equivalent cracked situation in which the material develops a higher fracture resistance. On the other hand, once the notch fracture toughness has been defined, the assessment is performed using the failure assessment diagram methodology, and assuming that the notch effect on the limit load is negligible. The methodology has been applied to 336 CT notched fracture specimens made of two different structural steels, covering temperatures from the corresponding lower shelf up to the upper shelf, providing satisfactory results and a noticeable reduction in the overconservatism derived from the analyses in which the notch effect is not considered.

 Fuente: Engineering Failure Analysis, 2014, 36, 104-120

 Editorial: Elsevier BV

 Año de publicación: 2014

 Nº de páginas: 17

 Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.engfailanal.2013.09.012

 ISSN: 1350-6307,1873-1961

 Proyecto español: MAT2010-15721

 Url de la publicación: http://dx.doi.org/10.1016/j.engfailanal.2013.09.012