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Purpose: The paper presents an analysis of the influence of design features of the flexspline in a harmonic drive, such as the relative radial deformation, the relative coating thickness and the design features of the basic rack tooth profile, on stress values in the bottom lands of a toothed ring. Design/methodology/approach: In numerical calculations, the software developed at the Faculty of Transport...
Purpose: The article provides a discussion on the studies on material vibration propagation in floor pan of the passenger car. The purpose was to analyse the vibration signals in multiple measuring points. The time-frequency distribution of the signals allows to identification the dominant component of the signal useful for material natural frequency calculation. Design/methodology/approach: The investigations...
Purpose: A new approach to production process by direct integration of the RFID (Radio-frequency identification) chips into the composite parts used during the manufacturing (moulding) process of the composite parts has been presented. This research aims a new application of RFID technology and measurement of the resistance of RFID chips integrated into composite parts under X-ray diffraction beams...
Purpose: The purpose of the article is to present the results of research of the effect of thermal and thermoplastic working on the structure of high-manganese austenitic TWIP steels. Design/methodology/approach: Plastometric tests were performed with DSI (Dynamic System Inc.) Gleeble 3800 instrumentation being the equipment of the Scientific and Didactic Laboratory of Nanotechnology and Materials...
Purpose: Results of the effect of thermomechanical processing conditions on the microstructure, mechanical properties and crack resistance are included in the present work. Conditions of forging with the method of thermo-mechanical treatment were developed basing on the analysis of precipitation kinetics of MX interstitial phases in a solid solution, plastometric examinations and investigations of...
Purpose: The aim of this research is to determine the construction parameters and the working parameters of the rotors modeled with the aid of the computer simulations. This research is conducted in the context of its application in different systems for sewage rectification. Design/methodology/approach: Modeling and process analysis of the fluid flow under the working rotor conditions simulated with...
Purpose: The objective of this work is experimental determination of temperature dependences of viscosity of the molten CaO-Al2O3-SiO2system and assessment of impact of CaO on the viscosity of this system. Design/methodology/approach: The ternary oxide system CaO-Al2O3-SiO2, which represents a simplified basis of the casting powder, was chosen for the experiment. Dependencies of viscosity on the concentration...
Purpose: The paper presents the results of a study of the effect of vacuum technologies of formation of surface layers on pitting of associated elements in a lubricated, heavy-load rolling contact. Design/methodology/approach: Samples of 16MnCr5 vacuum-carburised steel, 100Cr6 bearing steel as well as elements of 100Cr6 steel with deposited coatings of titanium nitride (TiN) and chromium nitride (CrN)...
Purpose: The aim of this paper was investigated structure and properties of gradient coatings produced in PVD process on AlSi9Cu aluminium alloys. Design/methodology/approach: The following results concern the structures of the substrates and coatings with the application of electron transmission and scanning microscopy; phase composition of the coatings using X-ray diffraction and grazing incident...
Purpose: Parameters for new manufacturing route of Cu casting reinforced with alumina fibers were elaborated. There was observed improvement of hardness and wear properties of composite materials comparing to the unreinforced copper and this indicates for the proper applied process parameters. Design/methodology/approach: Manufacturing of composite materials involves two stages, preparation of porous...
Purpose: The aim of the work was to determine the effectiveness of the modification of the epoxy resin strength and elasticity by Wood’s alloy particles addition. Design/methodology/approach: Manufacture method of thermosetting polymer matrix composite materials reinforced with the Wood’s alloy particles was searched. First of all mixing conditions were differentiated to obtained good dispersion of...
Purpose: The article presents a concept of a hybrid layer, consisting of a gradient layer and anti-wear coat, intended for machine parts regeneration. Design/methodology/approach: The essence of method lies in the use of universal replacement material and its surface processing, which increases the hardness of the part that is being regenerated. The study was conducted on a material covered with a...
Purpose: To present a short overview of PLM and its directions including evolution, different phases of PLM and Closed-loop PLM. To describe a new approach in order to improve the closed-loop lifecycle by using production monitoring systems at an early stage of the lifecycle. Monitoring of products in their early life stages in production processes and to use this information for the improvement of...
Purpose: The purpose of this paper is the microstructural evaluation of the lean duplex stainless steel UNS S32101 (EN 1.4162) welded joints after isothermal aging heat treatment at 650°C. The scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) was applied in the microstructural analysis. Design/methodology/approach: The welding joints were produced using the metal active...
Purpose: The goal of the study is to find the relationship between the value of casting temperature on corrosion resistance, hardness and mechanical properties of two Co-Cr-Mo alloys Remanium 2000+ and Wirobond LFC used in dentistry. Design/methodology/approach: Realized investigations starts from preparing the mould and cast two CoCrMo alloys in 1430, 1440, 1450 and 1460°C. Electrochemical corrosion...
Purpose: this article presents the results of mechanical and structure testing of X10CrMoVNb9-1 (P91) steel in initial state and after annealing, creep tests and long-term service under creep conditions Design/methodology/approach: The material for investigations was X10CrMoVNb9-1 (P91) steel in the form of two test pieces of tubes with dimensions of Ø355.6x50 mm and Ø325x38 mm in initial state and...
Purpose: A growing trend to use the copper-based strips is observed recently world-wide in the electric and electronic industry . Ultrafine grained copper and solid solution hardened copper alloys are applied where high electrical conductivity and good mechanical properties are required. Design/methodology/approach: This study was aimed to investigate microstructure in strips of copper alloys with...
Purpose: In this paper the result of laser surface feeding or remelting is discussed. The remelted layers which were formed on the surface of the investigated hot work steel were examined and analyzed metallographically and analyzed using a hardness testing machine. The resistance research has been done on the CSM Instruments. Design/methodology/approach: In this paper the results of laser treatment...
Purpose: The article deals with the advance configuration and the installation of vehicle components to the experimental rail vehicle powered by the traction battery. Particularly the paper focus on the research problems of the construction of the experimental rail vehicle (bogie), the structure of electrical equipment of experimental rail vehicle (traction drive, control system, power supply system...
Purpose: The main objective of this study was performed to determine the effect of selective laser sintering parameters such as power output, laser distance between the point’s sintered metal powder during additive manufacturing as well as the orientation of the model relative to the laser beam and substrate on the surface quality of the model. Design/methodology/approach: In research the device for...
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