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Fracture mechanics in Serbia - 49 years of development
(International Conference on Fracture, 2017)
Development of fracture mechanics in Serbia has been presented. To start with, it was the Magister thesis of Prof. Stojan Sedmak, 49 years ago (1968), as the first milestone. The stress concentration problems have been ...
Creep crack growth - Comparison of two steel P91 and P22
(International Conference on Fracture, 2017)
The deformation and crack growth behaviour of P22 and P91 steel weldments tested at 550 °C and 600 °C, respectively,compact C(T) type specimens with sharp EDM starter notches in the base metal (BM) and heat affected zone ...
Temperature and time effects on fatigue strength of weldments
(International Conference on Fracture, 2017)
Temperature and service time effects on A-387 Gr. B Cr-Mo steel weldment fatigue strength have been evaluated. To assess service time effect on fatigue strength, samples are take from 40 years “old” material, whereas ...
Charpy and SEM investigation of Al-Mg friction stir weldments
(International Conference on Fracture, 2017)
Influence of friction stir welding processing variables on Charpy impact fracture behaviour of Al-Mg 5083 alloy was studied. Rotational and traversal welding rates were linked to the dynamic crack initiation and ductile ...
Numerical analysis of fracture of non-standard ring specimen for examination of axially flawed cylindrical structures
(International Conference on Fracture, 2017)
Integrity of cylindrical structures, such as pipes and small-scale pressure vessels, is typically assessed by testing fracture mechanics specimens, like compact tensile CT or single-edge notched bending, SENB. However, ...
Temperature and time effects on fracture toughness values in welded joint
(International Conference on Fracture, 2017)
Temperature and time effects on fracture toughness have been investigated for characteristic regions in a welded joint made of Cr-Mo steel A-387 Gr. B. Comparative analysis of fracture toughness values for characteristic ...
Numerical simulation of fatigue crack growth in welded pipes
(International Conference on Fracture, 2017)
Numerical simulation of fatigue crack growth has been performed by using the extended finite element method (xFEM) for modeling fatigue crack growth in a pipe made of API j55 steel by high-frequency welding. The obtained ...
The new experimental testing methodology for conveyor idler's fits control
(International Conference on Fracture, 2017)
The most common way to transfer tangential and axial loads in different types of assemblies is by interference fits. It is essential to determine interference fit parameters of pressed joints, which provides a proper ...
Influence of the 3D interface crack front shape on the fracture parameters
(International Conference on Fracture, 2017)
Mechanical properties of multi-layer materials are often restrained by the strength of the interface between the constituting materials. Interface is frequently a spot of the crack initiation and delamination usually starts ...
Material characterization of the main steam pipeline made of 12%Cr tempered martensite ferritic steel after prolonged service
(International Conference on Fracture, 2017)
In the past decades, tempered martensitic ferritic steels with 9-12% chromium and containing carbide stabilizing elements have been widely used for components which operate within the creep range in power and industrial ...