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Ductile crack growth initiation in welded joints - Micromechanical approach
(Welding in the World, 2008)
The integrity of welded structures depends on the load-carrying capacities of their welded joints. Having in mind that welding process produces a large microstructural gradient through the weld, resulting in variation of ...
Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings
(Taylor & Francis Ltd, Abingdon, 2008)
An attempt has been made to model the plane-strain fracture toughness, KIc, in Al-Zn-Mg-Cu alloy forgings subjected to overageing. The proposed model, based on the multiple micromechanisms, reveals the quantitative relations ...
Electrochemical properties of mixed WC and Pt-black powders / Elektrohemijska svojstva smeše prahova WC i Pt
(Serbian Chemical Society, Belgrade, 2008)
The electrochemical characteristics of a mixture of Pt-black and WC powders and its catalytic activity for methanol and formic acid oxidation were investigated in acid solution. XRD and AFM measurements revealed that the ...
Use of multivariate analysis in radioecological and environmental radoactivity studies - advantages and limitations
(Østerås : Norwegian Radiation Protection Authority, 2008)
Some of the most commonly occuring problems in radioecological and environmental
radioactivitiy studies when applying traditional statistical models are multivariate and
multiscale structures of data. Spatial data analysis ...
Local heat transfer coefficients during refrigerant R-134a evaporation in a vertical plate heat exchanger
(18th International Congress of Chemical and Process Engineering, CHISA 2008, 2008)
The evaporation heat transfer coefficient of refrigerant R-134a in a vertical plate heat exchanger was investigated. The area of the plate was divided into several segments along the vertical axis. For each of the segments, ...
Evaluation of damage of steam pipeline steel using local approach to fracture
(ASME 2008 Pressure Vessels and Piping Conference, PVP2008, 2008)
In the paper, the level of damage of steam pipeline steel after about 100,000 hours at 540 degrees C (1004 degrees F) under pressure of 42 bars (609 PSI) is analyzed. Material degradation is estimated using a combined ...
Interactive supported electrocatalysts and spillover effect in electrocatalysis for hydrogen and oxygen electrode reactions
(Serbian Chemical Society, 2008)
The aim of the present paper has been to introduce the electron conductive and d-d-interactive individual and composite hypo-d-oxides of the increased altervalent capacity, or their suboxides (Magneli phases,), as catalytic ...
Crystal structure of picotpaulite, TlFe2S3, from Allchar, FYR Macedonia
(Slovenian Chemical Society, 2008)
The crystal structure of the mineral picotpaulite, TlFe2S 3, was solved and refined using single-crystal X-ray diffraction data collected at room temperature. The symmetry is orthorhombic, space group Cmcm, with unit-cell ...
Pt/C doped by MoOx as the electrocatalyst for oxygen reduction and methanol oxidation
(Elsevier Science Bv, Amsterdam, 2008)
The oxidation of methanol and reduction of oxygen were studied on MoOx-Pt/C nano-catalysts prepared by the polyole method combined by MoOx post-deposition. The catalysts were characterized by TEM and EDX. The presented ...
Possibility of life assessing the speed reducer for belt conveyor drive by applying tensometric measurements / Mogućnost procene veka prenosnika reduktora za pogon trakastih transportera primenom tenzometrijskih merenja
(Society for Structural Integrity and Life, Institute for Material Testing, 2008)
The load carrying structure of belt conveyors, a system with excessive elastic properties of its parts, is subjected to complex loads of dynamic character. Assessment of state of the drive and conveyor structure is possible ...