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Purpose: of this article is to present an application to analysis and modelling of rotational systems. Independent modules of application enables controlling and regulation of characteristics of systems in transportation. The base problem of analyzing systems in transportation is expressing the interaction between the main motion and local vibrations of subsystems. Design/methodology/approach: Mathematical...
Purpose: The main purpose of this work is the presentation analysis and synthesis of mechanical systems including passive and active elements reducing 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 spectrum. The aim of this paper is also...
Purpose: Fracture toughness in aluminium alloys is one of the main obstacles to using these materials in widespread ways and, therefore, various aspects of fracture mode would be examined closely, pointing out the microstructure influence. In the present paper, fracture nucleation and propagation of 6082 aluminium alloy was studied. Design/methodology/approach: Tensile tests, crack resistance test...
Purpose: The aim of the paper is to investigate the influence of various deformation conditions on microstructure evolution and flow curves of TRIP-type steel. Design/methodology/approach: In order to determine the influence of MX-type interstitial phases on limiting the grain growth of primary austenite, samples were quenched in water from a temperature range, from 900 to 1200*C. Determination of...
Purpose: Calculation of the fatigue life based on attaining a critical defect size for fast fracture is very important. Cannon is one of the most used parts in military industries and analysis of this component is under consideration. Therefore, the prediction of its longevity to say, the number of cannon ball that can be fired till it is broken down should be under consideration. Design/methodology/approach:...
Purpose: The paper addresses the problem of determining the dependence between initial heat treatment of an austenitic Fe-Ni alloy and its fatigue life at room and elevated temperature Specimens of Fe-Ni alloy were subject to tests after two variants of heat treatment: solution heat treatment followed by typical single-stage ageing, and solution heat treatment followed by novel two-stage ageing. Design/methodology/approach:...
Purpose: The main purpose of this paper is to analyse the grinding processes and develop a search system of database for cutting tools. Design/methodology/approach: A tool grinding software with open architecture was used to analyse the grinding processes of square end mills, tapered square end mills, ball nose end mills, tapered ball nose end mills, radius end mills, tapered radius end mills, straight...
Purpose: In this paper we want to describe the work of Design Method's research group of Dept. of Mechanical Engineering of Salerno University, in the research sector concerning passive pedestrian safety for vehicles, taking into account models FEM used and developed for vehicle design and optimization. Design/methodology/approach: Our carried out models show a very good degree of Numeric/Experimental...
Purpose: of this paper is on-line identification of the machinability based on the theory of energy quanta power spectra of the measured signal of the cutting force. Identification method is supported by measurements of the instantaneous temperature in the cutting zone for workpieces with the same chemical composition but different microstructure and mechanical properties. Design/methodology/approach:...
Purpose: The quality management in the productive processes is essential in formation of the quality of the final product. It is particularly important in the motor industry. The paper presents characteristics of the management methods and application of the processing point analysis in the chosen productive process. Design/methodology/approach: To solve the problem presented in the paper the authors...
Purpose: A new approach for quality control and improvement of preproduction sphere in organization with usage of chosen quality research methods has been presented. Design/methodology/approach: The possibility of usage of method of product modernity is connected with improvement of preproduction sphere of organization, and the result-improvement the products. Interdependence of the quality control...
Purpose: The aim of the paper is research and development concerning a fatigue tester of shock absorber seal systems. Design/methodology/approach: Analytical approach has been applied to get an understanding of a heat exchange process. The mathematical model has been formulated and validated based on the available measurements. Numerical simulation has been carried out to illustrate a heat exchange...
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