cmms 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
Method of interpretation of results of plane strain compression tests for evaluation of rheological parameters of materials Bernard Kowalski AGH University of Science and Technology. DOI: https://doi.org/10.7494/cmms.2003.2.0040 Abstract: Plane strain compression tests to investigate effects of heterogeneity of deformation for various initial specimen geometries have been carried out. Equations for correction of nominal strain and strain … Read more
Optimization of drawbead position in sheet metal forming Artur Marczewski, Włodzimierz Sosnowski Instytut Podstawowych Problemów Techniki PAN, Świętokrzyska 21, 00-049 Warszawa. DOI: https://doi.org/10.7494/cmms.2003.1.0032 Abstract: In this paper the optimization of drawbead position based on sensitivity analysis is considered. The finite element simulation of sheet metal forming process and ?exact?, direct differentiation method (DDM) of sensitivity … Read more
Modelling of the influence of crystallographic texture evolution on the plastic anisotropy development and strain localization in metal sheets Katarzyna Kowalczyk1, Wiktor Gambin2 1Instytut Podstawowych Problemów Techniki PAN, Warszawa. 2Wydział Mechatroniki Politechniki Warszawskiej, Warszawa. DOI: https://doi.org/10.7494/cmms.2003.1.0031 Abstract: Model of evolution of plastic anisotropy due to crystallographic texture development in metals subjected to large deformation processes … Read more
Methodology of solution of joint problems of modelling, identification and multi-criterion optimization in quality control for metallurgical processes Ludmiła Dymowa, Paweł Sewastjanow Wydzia ł Inżynierii Mechanicznej i Informatyki Politechniki Częstochowskiej. DOI: https://doi.org/10.7494/cmms.2003.1.0033 Abstract: The related simulation, identification and optimization problems in technological development and product quality control in the metallurgical mini-plant are considered. It is … Read more
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 Pietrzyk1, Roman Kuziak2 1AGH University of Science and Technology, al. Adama Mickiewicza 30, 30-059 Kraków.2Instytut Metalurgii Żelaza w Gliwicach, ul. Karola Miarki 12-14, 44-100 Gliwice. 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 … Read more
Modification of polynomial bezier surfaces Bogusław Bożek, Prokop Środa AGH University of Science and Technology, al. Adama Mickiewicza 30, 30-059 Kraków. 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 … Read more