Influence of process variables on development of laser weld pool Aleksander Siwek, Tomasz Didenko AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.1.0034 Abstract: The mathematical model of laser beam melting of stainless steel is presented in the paper. It is shown that process of melting is mainly controlled by value of surface tension. For the … Read more
Computer image analysis in quantitative metallography Jan Szala Katedra Nauki o Materialach, Politechnika Śląska, Krasińskiego 8, 40-019 Katowice. DOI: https://doi.org/10.7494/cmms.2003.1.0035 Abstract: The computer image analysis is performed on digital images consisting from pixels, their values, in certain scale, correspond to a mean grey level or colour of metalographic microsection area represented by a given pixel. … Read more
Modelling of temperature field and phase transformation in elements regenerated by surfacing Jerzy Winczek Czestochowa University of Technology. DOI: https://doi.org/10.7494/cmms.2002.4.0029 Abstract: In work the model of field temperature and phase changes calculation for multibeads solid wire GMA surfacing is presented. For adopted diagram of surfacing the temperature field is given, with regard of call out … Read more
Problem of modelling of materials properties during deformation under varying conditions Maciej Pietrzyk, Roman Kuziak 1AGH University of Science and Technology.2Instytut Metalurgii Żelaza w Gliwicach. DOI: https://doi.org/10.7494/cmms.2002.4.0030 Abstract: The objective of the work was to study the importance of accounting for the history of the deformation in modeling of flow stress in hot metal forming … Read more
Modification of polynomial bezier surfaces Bogusław Bożek, Prokop Środa AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.4.0027 Abstract: In this paper some methods of modification of Bezier two-dimensional surfaces are presented. For surfaces defined on rectangular and triangular domain, two methods of this modification are constructed. These simple methods are applicable in computer graphics. Cite … Read more
Probabilistic theory of screening of particles growth Andriy Burbelko AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.4.0028 Abstract: The study of grains growth during a phase and structural transformations has essential importance for materials science and engineering. The existing Kolmogorov theory covers growth of grains on the assumptions of the geometric similarity of particles, their … Read more
Solution of poisson equation using spectral method Bogusław Bożek AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.2.0022 Abstract: The problem of the simulation of rheological properties of metals is considered at numerical modeling processes of profile extrusion with high extrusion ratio. The existing ways of the mathematical description of rheological properties of metal at extrusion … Read more
Analysis of torsion test by the finite element method Zbigniew Gronostajski Wroclaw University of Science and Technology . DOI: https://doi.org/10.7494/cmms.2002.2.0023 Abstract: Various conversion methods of torque and angle of rotation to flow stress and strain are presented in the paper. These methods were verified in mathematical modelling using the finite element method. Performed investigations show that … Read more
Static model of oxygen converter process based on the artificial neural network Jan Falkus, Piotr Pietrzkiewicz, Wojciech Pietrzyk, Jan Kusiak AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.2.0024 Abstract: The main objective of the paper is the presentation of the static control model of steelmaking converter process (LD) based on the artificial neural network approach. … Read more
Identification of phase transformation models for steels, based on dilatometric constant cooling rate tests Tomasz Kondek, Maciej Pietrzyk AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.2.0025 Abstract: The work was inspired by the fact that commonly used isothermal dilatometric tests may give erroneous results. Application of the optimization techniques to the interpretation of more complex … Read more