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Purpose: This paper presents the results of an investigation of the metal transfer. The main goal of the investigation was to check that using narrow band filter and high speed digital video camera can be used, without a back-lighting laser, to observe the metal transfer process. Presented are the influence of wire feed rate (welding current) on droplet diameter, droplet trajectory and velocity. Design/methodology/approach:...
Purpose: This paper is focused on the optimal cutting parameters design of rough cutting processes in side milling for SKD61 tool steels. Design/methodology/approach: The fuzzy logics can be a proper basis to perform the optimization procedure with complicated multiple performance characteristics in this paper. Using this approach combined with the grey-relational analysis, the design algorithm is...
Purpose: In accordance with aging of populations in many developed countries, number of drivers who suffer from mild cognitive impairment (MCI drivers) is increasing. Since it has been reported that driving skill of the MCI drivers are deteriorated, it is important to train themselves in driving situation to preserve their driving skills. The present study was conducted to develop the simple driving...
Purpose: Growing level of automatism, information technologies and other technological achievements on the one hand and unadjusted production companies in Bosnia and Herzegovina on the other, impose a need for new knowledge from the aspect of adaptability and increasing eco-efficiency of production systems. Engineers face the problems of growing trends of change in the area of technology, organization,...
Purpose: The main reason of this paper was to prepare the system, which tests the use of elastic band for smoothing the collision-free trajectory. The aided robot off-line programming system is based on NURBS and B-Spline curves. Because there is a lot of information in references about using elastic band algorithm, authors decided to compare these two methods. The most important criterion in robotics...
Purpose: The paper presents main principles of environmental management systems ISO 14001 and EMAS. Thanks to EMS organizations can improve theirs activity especially through environmental modernization introducing to realized technological processes. Design/methodology/approach: Implementation of EMS provides organizations many benefits: increasing the efficient use of resources; waste reducing;...
Purpose: The goal of this publication is to demonstrate the laboratory metal casting simulation methodology based on controlled melting and solidification experiments. The thermal characteristics of the AM50 magnesium alloy during melting and solidification cycles were determined and correlated with the test samples' microstructural parameters. Design/methodology/approach: A novel methodology allowed...
Purpose: Purpose of this paper is to present a mathematical model of rod and beam systems in transportation. The mathematical model is presented in the form of dynamical flexibility of systems. Systems are considered as flexible rotating rods and flexible rotating beams. In solution there was took into account the interaction between the main motion and local vibrations of elements. Design/methodology/approach:...
Purpose: The work presented in this paper might be used for basic data in the design of a lot extruded aluminum products using the variable section extrusion process. Design/methodology/approach: The capacity of a CNC extruder was calculated and decided as analyzing the FEM results performed by commercial software DEFORM-2D. CNC extruder and die set for variable section extrusion was invented by field...
Purpose: The aim of the paper is to investigate the buckling effects due to the seismic sloshing phenomena interesting for a next generation heavy liquid metal cooled reactor as for example the eXperimental Accelerator Driven System (XADS). Design/methodology/approach: In this study the structural buckling behaviour of a reactor pressure vessel, retaining a rather large amount of liquid and many internal...
Purpose: In material engineering the images obtained by various methods are the source of different information about materials. The artificial intelligence tools can be employed for automatic method for analysis of scanning electron microscope metallographic images of elements after long time operating in creep services. Design/methodology/approach: The methodology allows to work out a system of...
Purpose: The purpose of this paper is to determine the influence of temperature of plastic deformation on the structure and mechanical properties of copper alloy of the type CuCr1Zr during a tensile test. Design/methodology/approach: The tensile test of the investigated alloy was realized in the temperature range of 20 ÷ 700° C with strain rate of 1.2 • 10-3s-1. Metallographic observations of the...
Purpose: Analysis is made of requirements posed by tasks of agents operating in the intelligent manufacturing systems and their resulting architecture is presented. Design/methodology/approach: Architecture of agent systems for industrial environment is presented, making it possible to generate the particular agents customised for the specific tasks, based on the automatic analysis of its required...
Purpose: The aim of the paper is optimization of a control strategy used in a seal fatigue tester. Design/methodology/approach: Analytical approach has been applied to get an understanding of a heat exchange process. It is required to optimize the control process algorithm. Findings: The initial control algorithm has been improved regarding numerous tests under different operating conditions. The...
Purpose: Problems of research related to creating ordered series of type of technology is realized with the intention of replacement traditional methods of selection of technological features for processes of machining. This process is realized through replacement of repeatable stages with routined stages susceptible to computer aiding. Design/methodology/approach: This paper shows algorithmic understanding...
Purpose: The main purpose of this work is the introduction the algorithm of a analysis and synthesis of mechanical systems. The systems containing passive and active elements reducing of vibrations. In result of conducted synthesis was received structures and parameters of a discrete model meeting the defined requirements concerning the dynamic features of the system, in particular, the frequency...
Purpose: The aim of this paper is to determine the influence of the mechanical milling process on the structure of Al67Ti25Fe8 alloy. Design/methodology/approach: The powders of the Al67Ti25Fe8 alloys were obtained by mechanical alloying method in a planetary Fritsh Pulverisette 5 mill. In order to investigate the structure scanning electron microscopy were used. Phase transformations were determined...
Purpose: The aim of the paper is to determine the influence of hot deformation conditions on σ - ε curves and structure changes of new-developed high-manganese austenitic steels. Design/methodology/approach: The force-energetic parameters of hot-working were determined in hot-compression tests performed in a temperature range of 850 to 1050° C by the use of the Gleeble 3800 thermomechanical simulator...
Purpose: The major problem restricting universal employment of intermetallic phase base alloy is their low plasticity which leads to hampering their development as construction materials. The following work concentrates on the analysis of microstructure and plasticity of ordered FeAl (B2) alloy during cold and hot deformation and rolling process. Design/methodology/approach: After casting and annealing,...
Purpose: The main objective of this paper is to present the development of an empirical model-based control mechanism to maintain a fine surface finish quality by maintaining on-line cutting values. Design/methodology/approach: The proposed model has been developed to present the control model constraints, by varying the machining parameters to control the force output to be constant. Genetic programming...
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