Mechatronic Systems and Materials VI

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Authors: Anna Danuta Dobrzańska-Danikiewicz, Jacek Trzaska, Agnieszka Sękala, Adam Jagiełło
Abstract: The paper presents new, possible applications of artificial neural networks in the field of materials science and material engineering in relation to other artificial intelligence methods known and applied in this area. The most recent simulation experiments, the exemplary results of which are presented in this paper, point out that the scope of the existing applications of artificial neural networks can be extended to encompass new areas related to prediction of development of materials treatment and processing technologies. The goal of such research is to focus, intentionally, the areas of future research and investments on the most promising areas likely to yield the highest added value in the future together with mitigating a risk relating to such a process. The computational models created were used for creating multi-variant probabilistic scenarios of future events based on heuristic independent variables acquired in the process of multi-stage expert surveys. Dependencies were determined, in particular, between the probability of occurrence of alternative macro-scenarios of future events and the development of the relevant thematic areas of M1–M7 and P1–P7.
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Authors: Stefan Dzionk, Bogdan Ścibiorski
Abstract: The surface of the finishing machined parts is defined mainly by roughness parameters. Growing demands on the part, especially mating sliding or rolling, require the specification of additional parameters, such as waviness parameters, particularly when there is significant resistance to seizing or noise reduction. This paper presents surface waviness characteristics of hardened burnished steel.
790
Authors: Dmitri Gornostajev, Gennady Aryassov, Sergei Zhigailov
Abstract: The problem of plates and shells under the effect of local loading was treated. In this paper, a direct solution for a round plate is proposed, which greatly raises its accuracy. The obtained results are generalized for shells of revolution. The result will be used in barge model calculations striving to increase accuracy of the calculations. It should help to decrease weight of the barge which is very important in order to increase load capacity of the barge. In order to solve equation in better tolerance, improved method of grids will be used. The proposed method will totally change current methods of calculation for the hull thickness due to its accuracy.
796
Authors: Stanisław Kachel, Adam Kozakiewicz
Abstract: The paper presents a conceptual design for an Unmanned Aerial Vehicle (UAV) of a MINI class, where the aircraft engineering is based on the parametrical approach with use of a master model. In addition, the algorithm for development of a virtual object is outlined as well. It is explained how grids are mapped on the surface of the UAV solid as well as applicability of these grids for aerodynamic modeling and strength analysis.
802
Authors: Anna Kawałek, Aleksandr Gałkin, Henryk Dyja, Kiryll Ozhmegov, Marcin Knapiński, Bartosz Koczurkiewicz
Abstract: The purpose of the process was to develop the guidelines for the new technological process of producing E635M zirconium alloy bars, including the conditions and schemes of deformations in individual open-die forging operations on a hydraulic press. The determined range of hot plastic deformation parameters (temperature, strain, strain rate) will contribute to the intensification of the plastic flow process in individual technological forging operations at a lower total energy consumption, with simultaneous homogenization of the structure in finished bars. Plastometric modeling of the process of hot forging square cross-section forging for industrial conditions and according to a newly developed scheme was carried out within the study. The examination was performed using the Pocket Jaw module of the plastometric device Gleeble 3800.
808
Authors: Anna Kawałek, Monika Magiera, Henryk Dyja, Marcin Knapiński, Bartosz Koczurkiewicz, Marcin Kwapisz
Abstract: The Institute of Metal Forming and Safety Engineering has developed technology for manufacturing grade X80 pipeline plates according to European standard EN 10208-2. Experimental chemical compositions ensuring a high level of yield strength have been developed. The article describes a method for selecting chemical composition [1]. The advancement of rolling technology takes much time and many calculations. Thus, using numerical simulations provides a possibility of a theoretical analysis of the plates made from new materials [4], [5]. Preliminary studies [1] have disclosed a large volume of deformations during the rolling process, which causes the distortion of rolls and generates heavy loads. For the theoretical analysis of rolling plates, Forge 2008® was used. The paper presents the obtained results of energy analysis and strength parameters displayed in Figure 1. The article considers a total amount of pressure on metal rollers and changes in the rolling moment.
813
Authors: Wojciech J. Klimasara, Zbigniew Pilat, Marcin Słowikowski
Abstract: Robotic welding of large elements poses significant difficulties regarding the technological process, robot functions and the safety of the operator and other people. The health risks involved arise out of the weight of elements, high heat capacity, harmful gases and fumes. Under the Eureka project, the PIAP team is developing a model of a robotized cell designed mainly for welding large elements. Occupational safety is of paramount importance and hence is a constructive discussion on occupational health risk factors. The replacement of human workers with robots on assembly nests, especially in SMEs, eliminates the exposure of workers to hazard, but is focused on a reduction in employment rather than in significant improvements to the workplace. The paper analyzes and discusses European safety regulations contained in the European directives and applicable EN standards. Appropriate safety programs of diverse welding processes and materials to be implemented by designers and suppliers of robotic welding stations and lines, as well as by the users thereof, will be indicated.
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Authors: Marcin Knapiński, Henryk Dyja, Anna Kawałek, Bartosz Koczurkiewicz, Sylwester Sawicki
Abstract: The research presented in the paper was carried out for the experimental steels with modified chemical composition allocated to pipelines for 760÷1180 °C range, strain rate s1 s1 and different distributions of particular reductions between passes were presented. Physical modeling of the rolling process was carried out upon using the GLEEBLE 3800 simulator. The research was based on the findings of the paper [1].
824
Authors: Mariusz Kosobudzki, Krzysztof Jamroziak
Abstract: The chosen problems of selection the basic chassis for special purpose body are presented in the paper. The technical data of chassis have to go through various tests, most often within the proving ground tests. The paper contains the analysis of chosen tests and their usefulness in the design process of special purpose vehicle.
829
Authors: Mariusz Kosobudzki, Tadeusz Smolnicki, Mariusz Stańco
Abstract: In the paper, the model of estimating the loss of maintenance potential of high mobility wheeled vehicles within proving ground tests is presented. This problem is up-to-date, especially important for military vehicles. The authors have analysed the selected requirements directed to this class of vehicles. In the main body of the paper, some model that could be applied in on-line system of prognostic Health and Usage Monitoring System (pHUMS) was presented. This model can be used to analyse information about the maintenance process of vehicle before some maintenance decision would be made.
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