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Determination of the optimum forming conditions for warm tube hydroforming of ZM21 magnesium alloy
Mechanical properties Working properties of materials and products ZM21 magnesium alloy
2009/12/14
Purpose: Magnesium alloys are especially appropriate to decrease vehicle weight and consequently reduce fuel consumption. However, forming limitations regarded to their low formability at room tempera...
A modification of the method for determination of surface fractal dimension and multifractal analysis
Computer Assistance in the engineering tasks and scientific research Fractal dimension Multifractal spectrum
2009/12/14
Purpose: In this work modification of the PCM method for determination of the surface fractal dimension is proposed. Complete reasoning, leading to correct formula for determination Ai(δ) is presented...
Computer aided determination of porosity in sintered steels
Powder metallurgy Sintering pre-alloyed Astaloy CrL and CrM steels Computer method of porosity analysis
2009/12/3
Purpose: Purpose of this paper was to apply a computer method of open porosity analysis for determination of porosity in sintered Astaloy CrL and CrM powders.
Design/methodology/approach: The powders...
The determination of the thickness of composite layer
Casting Composite Surfacing alloy layer
2009/12/2
Purpose: In this article the thermal simulation of formation composite layer on steel model casting and real casts
were presented and described. There is also shown a computer program to determine th...
Comparison of Two Methods for the Determination of Stability Constants for Metal-NOM Interactions
Schubert’s method Stability constants Chemical model Complexation NOM
2009/10/10
The inherent polyfunctional and heterogeneous nature of natural organic matter (NOM) has made the modeling of metal complexation reactions difficult. Historically, a number of modeling approaches have...
An electrochemical sensing platform based on a new copper complex for the determination of hydrogen peroxide and nitrite
crystal structure bulk-modified carbon paste electrode electrocatalysis
2010/1/19
A new copper(II) complex [Cu(C12H23N3)4Br2·2H2O] was synthesized and its structure was characterized by x-ray crystallography and elemental analysis. The copper atom had a distorted octahedron coordin...
Application of the analysis of variance for the determination of reinforcement structure homogeneity in MMC
Composite casting Homogeneity Analysis of variance
2011/4/2
These authors propose a new definition of homogeneity verified by variance analysis. The analysis aimed at quantitative variables describing the homogeneity of reinforcement structure, i.e. surface a...
Application of the analysis of variance for the determination of reinforcement structure homogeneity in MMC
Composite casting Homogeneity Analysis of variance
2011/4/7
These authors propose a new definition of homogeneity verified by variance analysis. The analysis aimed at quantitative variables describing the homogeneity of reinforcement structure, i.e. surface a...
Computer aided process of dimensional distortion determination of bounded plaster sandmix Part II
Innovative foundry technologies and materials Precision casting Plaster mould Dilatation
2011/4/8
A computer program allowing calculation of dimensional changes of mould made of cristobalite-gypsum composition in process of its heat treatment and preparation for molten metal casting is presented i...
Methods of the montmorillonite content determination in foundry bentonites
Foundry bentonites Montmorillonite FTIR method
2011/4/1
This paper presents results of the measurements montmorillonite content in foundry bentonites and mixtures of bentonite – lustrous carbon carrier by three methods: spectrophotometric method with the u...
Computer aided process of dimensional distortion determination of bounded plaster sandmix
Innovative foundry technologies and materials Precision casting Plaster mould, Dilatation
2011/3/31
A computer program allowing calculation of dimensional changes of mould made of silica-gypsum composition in process of its heat treatment and preparation for molten metal casting is presented in...
Computer aided process of dimensional distortion determination of bounded plaster sandmix
Innovative foundry technologies and materials Precision casting Plaster mould, Dilatation
2011/3/31
A computer program allowing calculation of dimensional changes of mould made of silica-gypsum composition in process of its heat treatment and preparation for molten metal casting is presented in...
Determination of Weibull Analysis of the Hypereutectic Silumins Reliability in Failure Time Respect
Computer-aided casting production Weibull analysis Reliability Analysis of fault occurrence time
2011/3/31
The results of dynamic evaluation of the reliability of hypereutectic AlSi17Cu3NiMg silumin under the effect of symmetrical cyclic tensile-compressive stresses were presented. Studies were carried out...
Determination of Weibull Analysis of the Hypereutectic Silumins Reliability in Failure Time Respect
Computer-aided casting production Weibull analysis Reliability Analysis of fault occurrence time
2011/3/31
The results of dynamic evaluation of the reliability of hypereutectic AlSi17Cu3NiMg silumin under the effect of symmetrical cyclic tensile-compressive stresses were presented. Studies were carried out...
A method for determination of complete mechanical characteristics of heterogeneous-structured materials
Low-cycle fatigue test Computer program (MLCF) Fatigue strength Mechanical tests
2011/3/31
The article outlines the possibilities to evaluate by a modified low-cycle fatigue test the quality of materials characterised by different structures and the resulting mechanical properties. The met...