In order to define a procedure for integrity assessment of pipelines and determining the fracture mechanics parameters, new type specimen with sharp notch, Pipe Ring Notched Tension (PRNT) specimen, is tested. The aim study determine influence geometry (cylindrical shape, as well number length stress concentrators) on parameters such force, Crack Mouth Opening Displacement CMOD, Tip CTOD J inte...

Abstract The through-thickness heterogeneous microstructure of thick-section high strength steels is responsible for the significant scatter properties along thickness. In this study, in order to identify critical microstructural features fracture behaviour and allow design optimisation prediction structural failure, was extensively characterised quantified. For purpose, samples were extracted ...

In this work, fatigue crack growth (FCG) in the 2024-T351 aluminium alloy is studied using plastic CTOD range, Δδp. Experimental tests were performed on 12 mm thick CT specimens order to obtain FCG rate and cylindrical stress–strain loops. A numerical analysis replicated experimental work terms of material, geometry loading conditions, but assuming pure plane strain state, The material paramete...

The available stock of the material is very often insuffi cient to machine conventional specimens and conduct tests according to ASTM Standards. Specially, it is diffi cult to meet the specimen size requirements, such as thickness or planar width, and estimate fracture toughness of high strength materials by means of KIc, JIc, or CTOD. A Local Approach to Fracture is an alternative methodology ...