Papers

Numerically enhanced optimization of bi-material rod and tube extrusion Paweł Kazanowski1, Wojciech Misiołek1, Mario E. Epler1, Vinod K. Sikka2 1Institute for Melal Forming, Lehigh University, 5 East Packer Aveniue, Bethlehem, PA, USA. 2Oak Ridge National laboratory, One Bethel Valley Road, 508, Oak Ridge, TN 37831, USA. DOI: https://doi.org/10.7494/cmms.2003.3.0043 Abstract: The presented research results are an … Read more

Application of optimal control theory methods to design of rolling technology Dmitry Svetlichnyy Politechnika Częstochowska, Wvdzial Inżynierii Procesowej, Materiałowej i Fizyki Stosowanej. DOI: https://doi.org/10.7494/cmms.2003.3.0044 Abstract: The paper deals with the application of control theory techniques in the flat rolling processes. Algorithms of optimal control problem solution are presented. Optimization problem for entire multi-pass rolling design … Read more

Relative importance of input signals of neural network Marcin Perzyk, Andrzej Kochański, Jacek Kozłowski Instytut Technogii Materiałowych Politechniki Warszawskiej. DOI: https://doi.org/10.7494/cmms.2003.3.0045 Abstract: Several types of relative importance factors of input signals of neural network are analyzed and assessed using simulated training sets. Behavior of the factors for characteristic cases of synergetic influences of input signals … Read more

Numerical modelling and simulation of sand mould manufacture process in lost foam casting Jerzy Rojek Instytut Podstawowych Problemów Techniki Polska Akademia Nauk, Warszawa. DOI: https://doi.org/10.7494/cmms.2003.3.0041 Abstract: This paper presents a numerical model of sand mould manufacture process in lost foam casting. The mould filling with sand and Band compaction by vibration are modelled using spherical … Read more

Analysis of forming of aluminium and magnesium alloys in semi-solid state by advanced computer modelling Krzysztof Sołek1, Andrzej Białobrzeski2, Tomasz Stuczyński3, Zbigniew Mitura1 1Akademia Górniczo-Hutnicza, al. Mickiewicza 30, 30-059, Kraków, Polska. 2lnstytut Odlewnictwa, Zakopiańska 73, 30-418 Kraków, Polska. 3Instytut Metali Nieżelaznych, Oddział Metali Lekkich, Piłsudskiego 19, 32-050 Skawina, Polska. DOI: https://doi.org/10.7494/cmms.2003.3.0042 Abstract: “Metal forming in … Read more

Modelling and control of steelmaking converter process Marek Długosz, Wojciech Mitkowski, Wojciech Pietrzyk AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.2.0036 Abstract: The static model of steelmaking oxygen converter process, based on the artificial neural network approach, is presented in the paper . Remarks about the dynamic models and control of the process are presented, … Read more

Algorithm of a knowledge extraction from neural network on the example of hot-dip zinc coating process Sławomir Golak, Franciszek Grosman, Tadeusz Wieczorek Politechnika Śląska. DOI: https://doi.org/10.7494/cmms.2003.2.0037 Abstract: One of the major disadvantages of neural networks is that they can be considered as black boxes, since no satisfactory explanation of their work. A method for the … Read more

Application of artificial neural networks to determination of bending parameters of construction profiles Paweł Litwin, Feliks Stachowicz Politechnika Rzeszowska, Wydział Budowy Maszyn i Lotnictwa. DOI: https://doi.org/10.7494/cmms.2003.2.0038 Abstract: Determination of the bending moment and springback coefficient of thin-walled steel and aluminium alloy profiles, as a function of the bending curvature, was the main objective of the … Read more

An analysis of sequences of nonuniform images Zbigniew Rudnicki AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.2.0039 Abstract: The images of sliding trace and transfer film on steel counter sample disk were recorded during sliding of the samples of the two PTFE composites in pin-on-disk tribotester. The paper describes some methods of analysis of these … Read more