Igor Budak

Igor Budak
University of Novi Sad · Department of Production Engineering

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92
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Publications

Publications (92)
Chapter
Full-text available
Life cycle assessment (LCA) is a standardised and comprehensive approach for evaluation of environmental impacts within the material and energy flows associated with various human activities and through the life cycle stages. Besides environmental impact evaluation, with LCA, costs, social impacts, impacts on workers, organisations and others can a...
Chapter
In today’s rapid industry development, there is a need for more accurate technologies that can cope with the rising demand of manufacturing accuracy. X-ray computed tomography presents such a method that can reconstruct internal structures of an object without its destruction. This gives X-ray computed tomography great advantage over other tactile...
Article
Full-text available
3D scanning devices are traditionally employed in reverse engineering tasks that can be carried out semi-automatically, with user assistance. However, their application in manufacturing process control requires automatic point cloud segmentation and extraction of geometric primitives. In this paper, we propose a method for automatic recognition of...
Article
Full-text available
In recent years, digitization of cultural heritage objects, for the purpose of creating virtual museums, is becoming increasingly popular. Moreover, cultural institutions use modern digitization methods to create three-dimensional (3D) models of objects of historical significance to form digital libraries and archives. This research aims to suggest...
Article
Presented in this paper is the theoretical background for a novel method for determination of kinetic friction coefficient. The method is based on the equation of movement of a rigid body along an inclined plane and has not been previously discussed in literature. According to the theoretical results presented in this paper, mean kinetic friction c...
Article
In this research, an evaluation of the external transverse micro-turning with conventional cutting inserts was performed with a constant cutting force in a dry environment. During machining, the number of revolutions, machining time and cutting forces was varied. Before and after machining, the diameter of the workpiece, circularity and the roughne...
Chapter
The rising demand in recent years for the application of X-ray computed tomography (CT) has been influenced by its non-destructive abilities and accuracy. The demand for application of X-ray CT on Multi-Material components (MMCs) has also increased. However, due to the presence of two or more materials during X-ray CT scanning, the consequent analy...
Article
With the rise of modern computer-aided technologies, their use in various different fields is becoming more and more apparent, but more profoundly in the field of medicine. The use of such technology enables the design of complex anatomical structures, often found in different areas of medicine. Maxillofacial and oral fields are becoming more and m...
Article
The aim of this study is to investigate whether the radiation dose level, during 3D cone beam computed tomography scanning of the patient, influences the dimensional accuracy of the reconstructed surface 3D models, and if it does, to analyse the accuracy improvement in relations to radiation dose levels. In this study is proposed a workflow where t...
Article
Presented in this paper is a methodology for evaluation of dry turning process along with optimal machining parameters, which allows a compromise between technological, economical, and ecological requirements. Dry longitudinal turning of Ni-based superalloy - Inconel 601 workpiece using three turning inserts coated with TiAlN + AlCr2O3 by physical...
Article
The paper demonstrates a novel methodology for surface extraction of multi-material components (MMCs) on industrial X-ray computed tomography (CT) datasets. The methodology is based on a combination of fuzzy C-means clustering (FCM) and region growing (RG) methods. FCM, used as a pre-processing step, allows proper classification and improvement of...
Article
The purpose of the study was to test new method for in vitro evaluation of dental material wear with 3D digitization procedure. Thirty dental crowns, made of polyetheretherketone and veneered with composite material, were subjected to wear test. The crown surface was digitized using coordinate measuring machine before and after the performed wear t...
Chapter
Application of the computed tomography (CT) within industry has been rising in recent years due to its non-destructive abilities and accuracy. Nevertheless, there are some challenges related to CT scanning, such as presence of artefacts. The aim of this research is to investigate to what extent the application of some advanced algorithms can influe...
Article
This study analysed the impact of the production of high-density polyethylene (HDPE) caps on the environment. To determine the environmental impact of injection moulding production, a life-cycle assessment was performed. The life-cycle assessment results showed that, in the injection moulding tool manufacturing process, the largest amount of enviro...
Article
Every material and every surface has its own visual texture. Surfaces with monotone, repetitive or uniform visual texture represent a challenge for the image-based Structure From Motion Multi-View Stereo three-dimensional (3D) reconstruction method. It is possible to overcome the lack of visual texture on the surfaces by projecting synthetically ge...
Article
Full-text available
Selection of an appropriate 3D digitization method in the field of cultural heritage represents a big challenge, especially for non-expert users, such as conservators, art historians, archaeologists etc. Considering the above, the aim of this paper is to develop an expert system for the selection of 3D digitization method, which is the tool for sug...
Article
Purpose Computer-aided design and additive manufacture (CAD/AM) technologies are sufficiently refined and meet the necessary regulatory requirements for routine incorporation into the medical field, with long-standing application in surgeries of the maxillofacial and craniofacial regions. They have resulted in better medical care for patients and...
Article
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Nowadays 3D technologies are integrated into all aspects of modern lives. This integration of 3D technologies paved new paths for further expansion of other fields, most recently the field of arts. In this paper bridging the symmetry-related gap between physical and digital sculpting by application of reverse engineering modeling was presented. Thi...
Article
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Development and improvement of 3D digitizing systems provide for the ability to digitize a growing number of materials and geometrical forms of greater complexity. This paper presents the application of 3D digitizing system using close range photogrammetry on the upper jaw cast in plaster in order to obtain its 3D model. Because of the low visual c...
Article
The Republic of Serbia as a candidate country for the EU is obliged to comply with EU directives. This refers to the waste management sector as well. Different goals need to be fulfilled and the current waste management practice has to be improved in order to meet all regulatory EU requirements. Therefore, any piece of information that would suppor...
Article
Full-text available
Industrial wastewater polluted with heavy metals presents significant ecological and health risks. Such wastewater can be efficiently decontaminated with activated carbon. Waste cherry kernels are a low-cost material used to produce non-conventional activated carbon. This research applies life cycle assessment, comparative adsorption study, and cos...
Conference Paper
Full-text available
Valuable cultural heritage may be permanently damaged as a consequence of different man-made influences, as well as natural erosion. In cases where no documentation is available about the original shape, an analysis of the typological group of similar objects is commonly used as a base for reconstruction. The interpretation of typology can be based...
Conference Paper
Image based 3D digitization methods, as an input data, use a digital photographs for reconstruction of 3D objects. Today, digital cameras are common devices used for capturing of digital photographs. Every digital camera is equipped with one of two types of digital sensors - CCD or CMOS. One of important features of these both types of sensors is t...
Article
The existence of large numbers of landfills that do not fulfil sanitary prerequisites presents a serious hazard for the environment in lower income countries. One of the main hazards is landfill leachate that contains various pollutants and presents a threat to groundwater. Groundwater pollution from landfills depends on various mutually interconne...
Article
Within a mobile communication network one can discern between base and hybrid base transmitter stations (BTS). The hybrid base transmitter stations differ from the conventional ones in that they use some alternative energy sources for power. This work presents a comparative assessment of life cycles of solar-powered hybrid BTS, and conventional BTS...
Article
Nowadays every piece of working equipment and tool has to comply with safety standards and laws. This study investigated multi-criteria methods for selecting working equipment in order to optimise performance and occupational safety. The multi-criteria decision-making (MDCM) method was applied to the problem of selecting optimal working equipment u...
Article
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The implementation of intraoral and extraoral computer-aided-design and computer-aided-manufacturing (CAD/CAM) systems in prosthetic dentistry has simplified the procedure, shortened the period of design and manufacture and improved accuracy and aesthetic properties of dental restorations. Three-dimensional (3D) digitisation has become an adequate...
Article
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Personalized bone grafts are one of the best examples of the latest achievements in the biomedical engineering. In the area of maxillofacial bone tissue reconstruction or jaw bone augmentation, their application has for some time been on the rise, and its ever increasing significance is driven by the growing technical support. One of the key segmen...
Article
Selection of the optimal product, where several products’ aspects are expressed through criteria, is a multi-criteria decision-making problem. Besides technical, exploitational, functional, structural, market and aesthetic criteria, nowadays, environmental criteria are inevitable aspects of a modern product. Environmental product properties can be...
Article
Energy-efficient buildings, made of ecologically acceptable materials, are result of a worldwide ecological awareness induced by ever growing concern in regard to climate changes and economic aspects of long term energy savings. Complexities regarding energy-efficiency, economy and traditional construction of residential family homes led to accepta...
Article
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Catalysts based on the Ni/Al2O3 system are used in a variety of catalytic processes. Catalysts are commonly synthesized through thermochemical routes (impregnation, precipitation, coprecipitation and others). The authors prepared a Ni-Pd/Al2O3 catalyst supported by a ceramic foam, using a novel method, whereby the foam was impregnated with aerosol....
Article
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In this paper the development of a banded microstructure in hot-rolled 34CrNiMo6 steel which consisted of bainitic and martensitic bands is explained. The chemical compositions of the bands were measured with energy dispersive x-ray spectroscopy (EDS), which showed that the martensitic bands contained more alloying elements (Mn, Cr, Mo, Si) than ba...
Article
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Introduction: An autologous bone (bone derived from the patient himself) is considered to be a "golden standard" in the treatment of bone defects and partial atrophic alveolar ridge. However, large defects and bone losses are difficult to restore in this manner, because extraction of large amounts of autologous tissue can cause donor-site problems...
Article
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This paper presents the possibilities of application of close-range photogrammetry, based on the Structure-from- Motion (SfM) approach, in 3D model’s reconstruction of bronze cast sculptures. Special attention was dedicated to the analysis of image processing strategy, and its impact on the 3D model reconstruction quality. For the purpose of analys...
Article
The paper investigates ball burnishing of openings. A special high-stiffness tool was designed for the purpose of experimentation, allowing the burnishing of 40–120 mm openings. Experiments were performed with aluminium alloy EN AW-6082 (AlMgSi1). The primary goal was to achieve dimensional and geometrical accuracy of the openings. Using a speciall...
Article
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Proposed in this paper is a novel approach to fixture layout design. The contact interface between workpiece and fixture is reduced to a single workpiece surface. This allows reliable machining of the remaining five workpiece surfaces in a single setup. Workpiece clamping is performed by inserting special elements into prepared auxiliary openings o...
Article
Multi-criteria analysis methods have wide applications in solving complex decision-making problems. Techniques for evaluating different types of criteria allow multi-criteria analysis to be applied in life cycle assessment methods. This paper presents a multi-criteria fuzzy logic methodology aimed to perform impact category weighting and sensitivit...
Article
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The presented work investigated the cytotoxicity of direct metal laser sintered (DMLS) and cast Co-Cr-Mo (CCM) dental alloy. In vitro tests were done on human fibroblast cell line MRC-5. There was no statistically significant difference in the cytotoxic effects of DMLS and CCM alloy specimens. The results of this investigation show good potential o...
Article
This paper focuses on particle characterization using two different methodologies - laser diffraction and image analysis based on scanning electron microscopy. The experimental part of the research was conducted in a dental laboratory, using a personal sampler for dust sample acquisition. Within the image analysis, two parameters of particle size a...
Article
Full-text available
Dental alloys for direct metal laser sintering (DMLS) are available on the market today, but there is little scientific evidence reported on their characteristics. One of them is the release of ions, as an indicator of the corrosion characteristics of a dental alloy. Within this research, the difference in the elution of metals from DMLS and cast (...
Article
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The production of floor coverings, in terms of environmental impact, is a very complex process due to a large number of influential parameters - various chemical emissions, inevitability of waste, a great number of influential physical quantities such as noise and vibration, dust and radiation, energy consumption, recyclability, etc. Interest in th...
Article
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Metal grinding is a one of the manufacturing technologies that is greatly connected to particles emission. Particles generated during the grinding process are dangerous in terms of its potential penetration deeply into the lungs of an operator. The level of risk for human respiratory system is related to nature, shape and size of the particles, and...
Article
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In this paper, compliance of interface between fixture elements and workpiece is theoretically and experimentally investigated. The proposed theoretical model allows modelling of the behaviour of all kinds of interfaces between fixture elements and workpiece, under arbitrary dynamic loads. Workpiece displacement relative to fixture element was dete...
Article
This paper is focused on the problem of compliance of interface between clamping/locating fixture elements and workpiece, under dynamic loads during machining. In contrast to previous investigations, the authors have developed a special device dedicated to testing of physical models which represent clamping/locating elements and workpiece. This dev...
Article
Implementation of the methods of 3D digitization in dental practice is a modern and sophisticated alternative to the method of conventional impressions. Among many different methods of 3D digitization applied in dentistry, optical methods can be considered as today mostly applied, especially in the field of prosthodontics. The developments of this...
Article
Purpose - The purpose of this paper is to propose a general model for locating and clamping workpieces of complex geometry with two skewed holes under multiple constraints. Design/methodology/approach - Numerous constraints related to application of the proposed model are discussed as prerequisite to design of fixture solution. Based on theoretical...
Article
Amongst the modern engineering technologies which have found broad application in the field of dentistry, one of the most widely used is the 3D digitization. This paper deals with the application of 3D digitization systems in the field of dental prosthetics, and attempt to contribute in this field through comparative analysis of this kind of system...
Article
This paper gives a proposal of one suitable concept for FEM structural modeling and analysis of cranes which are a common part of the waterway dredger facilities. These dredgers typically contain two cranes: main jib crane between the catamaran-like pontoons and auxiliary crane in the bow zone. Discussion here is dedicated towards advantages and we...
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To minimize and in the near future eventually eliminate the negative environmental impacts, such as emissions, waste, energy and excessive raw material consumption, the life cycle assessment of buildings is essential. This paper provides an insight in environmental life cycle assessment (LCA) of a typical intermodal steel building unit (ISBU). Izvl...
Article
Full-text available
This paper deals with the problem of defining the trajectory of a stiff burnishing tool that would be optimal from the point of view of surface quality. The basic goal of this work is to gain an insight into the very process from the microscopic aspect, with the primary focus on material flow and roughness variations. Based on theoretical considera...
Article
Full-text available
Contemporary 3D digitization systems employed by reverse engineering (RE) feature ever-growing scanning speeds with the ability to generate large quantity of points in a unit of time. Although advantageous for the quality and efficiency of RE modelling, the huge number of point datas can turn into a serious practical problem, later on, when the CAD...
Article
Fixtures which balance cutting forces and torques by the friction forces generated on contact surfaces of locating, clamping elements and workpiece surfaces are widespread in industrial practice. Among other things, these friction contacts are characterized by a certain amount of interface compliance which is a complex function of macro- and microg...
Article
Machining fixtures which utilize screw-or strap clamps are widely used in manufacturing. Typical for them is that the cutting forces are balanced by the friction forces which act on the contact surfaces (interfaces) between clamping elements (screw- or strap clamps) and workpiece. This paper analyses load capacity and compliance of these interfaces...
Article
Full-text available
Purpose: During the last couple of decades, development of medical science has been marked with an ever more pronounced interdisciplinary character which, in part, can be attributed to various engineering applications. Rapid development of computer-aided technologies, which completely transformed production engineering, also left an indelible mark...