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ISSN - 2391-9361


Volume 11, issue 2




Edition circulation: 130 copies


vol. 11, iss. 2/1


The scope of research on the awareness of issues related to management systems and readiness for their implementation

The article reviews the circumstances and methods of implementing management systems as well as the problems associated with the implementation of Lean Manufacturing. Analysis of the positions of researchers on the issue of difficulties in implementing LM, focusing on the problem of cultural differences. The aim of the research undertaken is to discuss the problems related to the implementation of Lean Manufacturing and Management systems in relation to cultural differences, national culture, ethnic and organizational work culture and the proposed research methodology of survey data collected in many plants around the world of the same international corporation.

Key words: management systems, Lean Manufacturing, cultural differences



vol. 11, iss. 2/2


Casting Machines and Properties of Al-Si Castings Alloys

The paper focuses on the research of holding pressure inside the mould cavity and pressing speed as technological parameters of die casting. The experiments conducted within the frame of the practical part examined the plunger and the pressure or the holding pressure in the mould cavity influencing the mechanical properties of a casting which were represented by ultimate tensile strength and percentage share of porosity of Al-Si castings. The results of experiments and analysis of the measured values proved the relation between pressure, or holding pressure, in the mould cavity and the ultimate tensile strength and porosity of castings. Plunger pressing speed is closely related to mould cavity filling mode which affected the final porosity of casting. It can be assumed that die casting is positively influenced by the increase of ultimate tensile strength and reduction of porosity during the increase of pressure or of holding pressure in the mould cavity. Higher values of holding pressure caused the elimination of pores which resulted in a decrease in the percentage share of pores in the casting and an increase in values of ultimate tensile strength.

Key words: 
die casting, technological parameters, machines, die casting pressure, pressing speed



vol. 11, iss. 2/3


Technical Diagnostics of Industrial Double TwistTwinner Machine for Data Cables

Abstract: The presented article focuses on the diagnostic measurement and evaluation of vibrations of equipment used for data-cable twisted pairing manufacture. A short description of the process of the data cables manufacturing process to which the diagnosed device belongs is provided and the qualitative parameters of the data cables are mentioned. The experimental part is devoted to the experimental diagnostics of the given system in order to locate and identify the possible reason for the occurrence of the parameter´s critical value of the loss of the data cable. When deterioration of electric properties was detected, monitoring the basic oscillation characteristics has been deployed as the key tool to detecting damaged machine parts, and avoiding quality deterioration of the products in the manufacturing process. Finally, the quality of the paired cables after the repair has been confirmed by measurements verifying the efficiency of the measures performed.

Key words: vibrodiagnostics, maintenance, twisted pair cables, return loss, cable fault



vol. 11, iss. 2/4


New Concept of Software for Calculation of Chain Gears

Abstract: At present, practically all areas of design activities are supported by computer technology, which can be effectively used in the design of gears, belts and chain transmissions, especially in the field of calculations, as well as graphics solutions. However, their use requires mastering the basic principles of computational procedures contained in the programs in question and, on that basis, critically evaluating computer-generated solutions. The presented paper deals with the design proposal and application of program for calculation and check of chain gears. Although there are currently various programs on the market that can design chain transmissions and perform strength analysis, there is still space for improvement and the creation of these programs. The computing program has been created as a spreadsheet in the working environment of the Microsoft Office program by the Excel application through defined sequences of the individual commands. The program serves for design proposal of a chain drive by means of inserted databases, graphs and tables. In the process of designing and checking the input values are entered such as performance, rotations, and number of wheels. Through calculation the software generates speed of a chain, circumferential speed, tensile force, number of chain links, axial distance, etc. At the same time the paper compares generated parameters with manual calculation of the chain gear.

Key words: software, design, chain gears, calculation, strength



vol. 11, iss. 2/5


Tomasz GUSTOWSKI, Waldemar KUREK, Krystian SAMSONIK, Rafał GRZEJDA
Prototype of the cutter with a circular saw blade fixed from the bottom of the workpiece

Abstract: In the paper, a prototype of a circular saw with a tool fixed from the bottom of the workpiece is introduced. The system is intended for the processing of long linear profiles used in engineering steel structures. It enables cutting profiles with closed or open cross-sections to a given size. The system is part of an innovative technological line for automatic plasma cutting, circular saw cutting and welding with use of welding robots.

Key words: circular saw, circular saw blade, long line profiles, high-speed steel, TiN coating



vol. 11, iss. 2/6


Measurement of Dynamic Characteristics of Screw Conveyor

Abstract: A machine has always been, is and will be the technical progress. The basis of every economy is the progressiveness of manufacturing engineering since it manufactures components for all industries. Technical requirements in manufacturing engineering are constantly leading to an increase of the technical level of manufacturing equipment. Profound knowledge of scientific fields precedes a successful fulfilment of the technical requirements. Structural units of manufacturing machines are complex mechanisms that must work reliably and safely with an emphasis on their important function. These units create new objectives for their research and optimization.

Key words: software, modal analysis, screw conveyor, vibration



vol. 11, iss. 2/7


The Horizon: A User Experience Assessment of Automotive User Interfaces

Abstract: Innovations for new display technologies equipped in vehicles set forth a need for assessing the impact of their user-adoption and emergence. This paper offers a phenomenological approach for investigating the user interaction and user experience of driving when augmented reality, heads-up displays, and digital screens are present. In doing so, this paper aims to show how the phenomenological concept of the horizon helps us to understand the ways in which screen technologies may affect the quality of the user experience for drivers. Implications of the horizon allow us to consider how, while driving, we recognize objects categorically in sense perception, observe the present and foresee its future consequences, and make decision-procedures according to levels of priority and attention to detail. As a result, these considerations help strengthen our approach to understanding driving activity while screens are in the periphery. Thus, these findings are suggested to be adopted for further user experience quality assessments in the field of intelligent transport systems.

Key words: Horizon, automotive user interface, user experience, phenomenology, UX design, safety



vol. 11, iss. 2/8


Analysis of the Effect and Relationship of Expo Organizations on the City: Expo 1998 Lisbon Case

Abstract: Expo organizations are global events dedicated to finding solutions to the fundamental challenges faced by humanity through engaging and immersive events organized within the framework of a determined theme. It plays an important role in raising awareness of the host city and international participants, as well as helping to shape a nation's image and reputation. The idea of introducing the changes and developments taking place around the world to the whole world and bringing people with different cultures and views together on a common platform is an important factor in the formation of Expo organizations. Hosting Expo events is an opportunity that every city can get perhaps once in its history. For this reason, it is very important that the time frame, which starts with the candidacy application and covers the organization process and beyond, is carried out successfully. In this direction, the effect and relationship of Expo organizations on the city were analyzed in this study. The impact of Expo 1998 Lisbon, chosen as the sample, on the city and the relationship established with the city were analyzed, and the importance of Expo organizations in branding and promotion of cities was tried to be determined. The example of Expo 1998 Lisbon was analyzed by examining the studies in the literature, and it was aimed to determine the evaluation criteria for the relationship of the Expo organizations planned to be organized in the future with the city.

Key words: Expo, Expo 1998 Lisbon, City, Urban Rehabilitation


vol. 11, iss. 2/9


Usability of Obsidian with Special Refraction as an Ornamental Stone by Bonding with Epoxy Resin

Abstract: Ornamental stones have been used quite a lot from past to present, and they are produced both naturally and synthetically in terms of visuality, durability and rarity. Naturally used ornamental stones are divided into two different classes as precious and semi-precious, and obsidian with two different colors belonging to the Nemrut volcanics used in the study is classified as semi-precious stones. Obsidian is a volcanic glass, showing a special fracture (conchoidal) and fracture surfaces give the rock a distinctive shine. In this study, obsidian was classified by breaking in different sizes (8-4.75 mm, 4.75-2 mm and 2-0.6 mm) in order to achieve this brightness. While black obsidian shards were obtained from 4.75-2 mm in size, brown obsidian shards were obtained from 2-0.6 mm shards and chose with the help of tweezers. Obsidian fragments with both colors were bonded with epoxy resin mixed at a ratio of 2:1 (epoxy and hardener) and placed in jewelry apparatus. The known durability properties and gloss of epoxy and the gloss on the broken surfaces of obsidian have been highlighted, and it has been observed that obsidian which has been used with different cutting and polishing techniques until now, can be obtained as a new product by using binder material. It is suitable to be used as an ornamental stone in jewelry making as a result of binding the obsidian fragments with epoxy by making use of the shines that occur on the fractured surfaces of the obsidian. In addition, it has been revealed that new products can be obtained as a result of bonding many natural rocks and minerals by using different binding materials.

Key words: Ornamental Stone, Obsidian, Conchoidal Fracture, Epoxy, Jewelry



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