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Stress state around imperfections in welded joints
(Institut za ispitivanje materijala, Beograd, 2015)
Because of their geometry, welded joints can cause a local increase of stress. In the presence of imperfections in welded joints the local stress additionally increases and can lead to the formation of cracks. Cracks are ...
Influence of temperature and exploitation period on the behaviour of a welded joint subjected to impact loading
(Institut za ispitivanje materijala, Beograd, 2016)
Presented in this paper is the analysis of the influence of temperature and exploitation period on the measure of fracture resistance of welded joint constituents in both new and exploited low-alloyed Cr-Mo steel A-387 Gr. ...
Influence of multiple defects in welded joints subjected to fatigue loading according to sist en iso 5817: 2014
(Institut za ispitivanje materijala, Beograd, 2018)
Structural integrity of pressure vessels is of great importance in ensuring their safe exploitation. Due to this, a number of standards are developed in order to define the criteria according to which materials, technologies ...
Numerical analysis of different weld geometries of lap welded joint in ammonia transport tanks
(Institut za ispitivanje materijala, Beograd, 2017)
Presented is a comparison of stress and strain distribution in lap welded joints of different geometries, which are part of a pressure vessel used as an ammonia transport tank. For this purpose, two numerical models are ...
Finite element analysis of fracture resistance parameters for stationary semi-elliptical surface cracks in high strength steel
(Institut za ispitivanje materijala, Beograd, 2015)
This study deals with numerical simulations based on elastic-plastic finite element method for nonlinear stress analyses on pre-cracked tensile specimens with high strength properties. The influence of crack geometry on ...
Advantages of friction stir welding over arc welding with respect to health and environmental protection and work safety [Prednosti zavarivanja trenjem sa mešanjem u odnosu na elektrolučno zavarivanje - Zaštita zdravlja i životne sredine i bezbednost na r
(Institut za ispitivanje materijala, Beograd, 2015)
In modern industrial production, every manufacturing and assembly process should be assessed with respect to its influence on the environment. For a company that invests in a new process, a careful analysis of HSE problems ...
Friction stir welding of aluminium alloys - T joints
(Institut za ispitivanje materijala, Beograd, 2015)
The paper presents results of research on the possibility of producing T-joints of aluminium alloys without defect by friction stir welding process. Friction stir welding process is applied in welding T-joints of aluminium ...
Final stretch zone width determination for MP35N multiphase alloy
(Institut za ispitivanje materijala, Beograd, 2015)
This paper presents an experimental elastic-plastic fracture behaviour analysis in order to evaluate a resistance of the aged and unaged MP35N alloy to stable and unstable crack growth. MP35N fracture behaviour has been ...
An analysis of random mechanical failures of bucket wheel excavator
(Institut za ispitivanje materijala, Beograd, 2015)
In this article random mechanical failures of bucket wheel excavator at open cast mine "Tamnava Zapad" are analysed. Random mechanical failures of mining equipment may represent an important factor in coal production because ...
Izazovi budućih istraživanja u oblasti industrijske bezbednosti / Challenges of future research in the area of industrial safety
(Institut za ispitivanje materijala, Beograd, 2015)
In today's turbulent business conditions, characterised by rapid technological development of a 'post industrial' society, in which new technologies result in new risks, safety management of complex techno-socio-ecological ...