cmms

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

Models of thermal plasma in welding and surface processing. Part I Jacek Rońda AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.2.0026 Abstract: The intensity of a heat flux transmitted from ionized gas through a liquid metal to a heat affected zone decides about the quality of a weld joint or the integrity of surface layers … Read more

Some Methods Of Processing And Feature Analysis Of Texture Images Zbigniew Rudnicki AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.1.0014 Abstract: Pictures of texture have significant meaning in a number of disciplines in science and engineering, such as metallography and crystallography, tribology (pictures of slipping surfaces and particles produced by wear), geology (surfaces of rocks), … Read more

Determination of selected characteristics of steels, based on the type of the CCT diagram, using artificial neural networks Bogdan Pawłowski, Paweł Popowicz AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2002.1.0019 Abstract: The paper focuses on classification of steels using the artificial neural network (ANN) approach. The steels are grouped into classes according to the Wever … Read more