SCIDAR - Дигитална архива Универзитета у Крагујевцу
University of Kragujevac Почетна страница заједнице
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Neutrosophic Failure Mode and Effect Analysis—Elimination and Choice Translating Reality Method for Prioritizing Failure Modes
Operations managers and engineers in the automotive industry confront the key challenge in ensuring the reliability of the manufacturing process. To accurately classify failure modes, this study proposed a novel Multi-Criteria Decision-Making (MCDM) model integrated with Single-Valued Neutrosophic Sets (SVNSs) for operations management to prioritize actions in eliminating failure modes that had the greatest impact on the concerned reliability. The identification and evaluation of failure mode...
Operations managers and engineers in the automotive industry confront the key challenge in ensuring the reliability of the manufacturing process. To accurately classify failure modes, this study proposed a novel Multi-Criteria Decision-Making (MCDM) model integrated with Single-Valued Neutrosophic Sets (SVNSs) for operations management to prioritize actions in eliminating failure modes that had the greatest impact on the concerned reliability. The identification and evaluation of failure mode...
Experimental Investigations Of Tensile Properties Of Ultra-High Strength Steel S1100QL At Room And Elevated Temperatures
The aim of this paper was to present experimental study into the influence of elevated temperatures on mechanical properties of Ultra-High-Strength Steel (UHSS) S1100QL. This steel belongs to the group of structural steels and it is primary used for designing various types of lifts and cranes with the goal to decrease mass of the structures with simultaneous increase of load capacity. During the first part of testing tensile tests were conducted on room and several other elevated temperatures...
The aim of this paper was to present experimental study into the influence of elevated temperatures on mechanical properties of Ultra-High-Strength Steel (UHSS) S1100QL. This steel belongs to the group of structural steels and it is primary used for designing various types of lifts and cranes with the goal to decrease mass of the structures with simultaneous increase of load capacity. During the first part of testing tensile tests were conducted on room and several other elevated temperatures...
A Two-Stage Interval Type-2 Fuzzy Approach for Contract Renewal Risk Assessment in Non-Life Insurance Using BWM and Pareto Analysis
The accurate assessment of contract renewal risk at the individual policyholder level represents a critical component of risk management in non-life insurance and is essential for ensuring long-term business sustainability. In this study, a two-stage interval type-2 fuzzy decision-making framework was proposed to evaluate and classify policyholder renewal risk. The approach began with the identification of key risk factors (RFs) that exert the most significant influence on renewal outcomes an...
The accurate assessment of contract renewal risk at the individual policyholder level represents a critical component of risk management in non-life insurance and is essential for ensuring long-term business sustainability. In this study, a two-stage interval type-2 fuzzy decision-making framework was proposed to evaluate and classify policyholder renewal risk. The approach began with the identification of key risk factors (RFs) that exert the most significant influence on renewal outcomes an...
Eksperimentalno istraživanje ekoloških pokazatelja i procesa sagorevanja dizel motora za slučaj primene biodizela i bioetanola
Biogoriva imaju sve veći značaj, jer ne utiču na bilans ugljen-dioksida (CO2). Biodizel i bioethanol se smatraju gorivima budućnosti zbog pozitivnih efekata njihove primene sa ekološkog aspekta. U radu su prikazani rezultati eksperimentalnih istraživanja ekoloških pokazatelja i procesa sagorevanja dizel motora za slučaj primene biodizela i bioetanola kao alternativnih goriva. Cilj istraživanja je poređenje koncentracija štetnih gasovitih produkata sagorevanja u emisiji izduvnih gasova dizel m...
Biogoriva imaju sve veći značaj, jer ne utiču na bilans ugljen-dioksida (CO2). Biodizel i bioethanol se smatraju gorivima budućnosti zbog pozitivnih efekata njihove primene sa ekološkog aspekta. U radu su prikazani rezultati eksperimentalnih istraživanja ekoloških pokazatelja i procesa sagorevanja dizel motora za slučaj primene biodizela i bioetanola kao alternativnih goriva. Cilj istraživanja je poređenje koncentracija štetnih gasovitih produkata sagorevanja u emisiji izduvnih gasova dizel m...
INVESTIGATION OF THE TRIBOLOGICAL CHARACTERISTICS OF POLYMER MATERIALS (PLA, PLA+COPPER, AND ABS) UNDER LUBRICATED AND DRY SLIDING CONDITIONS
This research paper presents the determination of tribological characteristics of polymer materials (PLA, PLA with copper, and ABS). The experimental procedure included measurements of surface roughness, coefficient of friction, and wear track width. The test specimens were fabricated using 3D printing, and wear tests were conducted using a TPD-93 block-on-disc tribometer. Each sample was subjected to three dry friction and wear tests and one lubricated test to observe differences under varyi...
This research paper presents the determination of tribological characteristics of polymer materials (PLA, PLA with copper, and ABS). The experimental procedure included measurements of surface roughness, coefficient of friction, and wear track width. The test specimens were fabricated using 3D printing, and wear tests were conducted using a TPD-93 block-on-disc tribometer. Each sample was subjected to three dry friction and wear tests and one lubricated test to observe differences under varyi...
THE INFLUENCE OF CUTTING DEPTH ON SURFACE ROUGHNESS OF 3D PRINTED PARTS
The development of additive manufacturing, particularly Fused Deposition Modeling (FDM), has enabled rapid prototyping and the production of functional parts with complex geometries. However, FDMprinted components often exhibit high surface roughness due to their layered structure. To enhance the surface quality, post-processing techniques such as CNC milling are applied. Among the key machining parameters, cutting depth (ap) significantly influences the final surface finish. This paper inves...
The development of additive manufacturing, particularly Fused Deposition Modeling (FDM), has enabled rapid prototyping and the production of functional parts with complex geometries. However, FDMprinted components often exhibit high surface roughness due to their layered structure. To enhance the surface quality, post-processing techniques such as CNC milling are applied. Among the key machining parameters, cutting depth (ap) significantly influences the final surface finish. This paper inves...
INFLUENCE OF CUTTING CONDITIONS ON SURFACE ROUGHNESS OF PA AND PA15
Engineering polymers, particularly polyamides, are increasingly used due to their favorable properties; however, their machinability—especially in the case of glass fiber-reinforced composites—remains a challenge. Conflicting findings in the literature regarding the effect of fillers on surface finish, particularly for composites with lower fiber content, highlight the need for further investigation. In this context, the present study focuses on the experimental examination of the influence o...
Engineering polymers, particularly polyamides, are increasingly used due to their favorable properties; however, their machinability—especially in the case of glass fiber-reinforced composites—remains a challenge. Conflicting findings in the literature regarding the effect of fillers on surface finish, particularly for composites with lower fiber content, highlight the need for further investigation. In this context, the present study focuses on the experimental examination of the influence o...
The analysis of the impact of recycling equipment in the automotive industry in terms of circular economy
The main objective of this paper is the analysis of the impact of recycling equipment in the automotive industry in terms of circular economy (CE). Also, paper point out the opportunities and benefits of applications equipment for recycling and principles of CE in the automotive industry in Serbia. Analysis of market needs and examining the existing equipment for recycling team who work on the project TR 35033 made: mobile baling press for baling shellfish and other scrap metal, a device for...
The main objective of this paper is the analysis of the impact of recycling equipment in the automotive industry in terms of circular economy (CE). Also, paper point out the opportunities and benefits of applications equipment for recycling and principles of CE in the automotive industry in Serbia. Analysis of market needs and examining the existing equipment for recycling team who work on the project TR 35033 made: mobile baling press for baling shellfish and other scrap metal, a device for...
Using neural network with convolution layer for automatic quality inspection,
At traditional assembly workstations product inspection is performed manually by operators and that takes a lot of time and represents a production bottleneck. Also, due to the appearance of mental fatigue, a drop in concentration in some situations, it is almost impossible for workers to notice the appearance of defects and irregularities. Therefore, in modern assembly systems, the implementation of advanced quality control through quality inspection, visually detect the quality of a product...
At traditional assembly workstations product inspection is performed manually by operators and that takes a lot of time and represents a production bottleneck. Also, due to the appearance of mental fatigue, a drop in concentration in some situations, it is almost impossible for workers to notice the appearance of defects and irregularities. Therefore, in modern assembly systems, the implementation of advanced quality control through quality inspection, visually detect the quality of a product...
Safety Evaluation in Human-Robot Collaboration Through Risk Assessment Matrix and Observational Measurements
Manufacturing assembly activities are competing to be one of the most intriguing and promising applications in collaborative settings, accounting for about half of the typical workload in the real manufacturing process. Collaborative robots, or cobots, allow to enhance productivity and wellbeing in those manufacturing repetitive and tedious tasks. Hence, human robot-collaboration, named also HRC, activities have been recognized as one of the pivotal solutions to increase efficiency. However, ...
Manufacturing assembly activities are competing to be one of the most intriguing and promising applications in collaborative settings, accounting for about half of the typical workload in the real manufacturing process. Collaborative robots, or cobots, allow to enhance productivity and wellbeing in those manufacturing repetitive and tedious tasks. Hence, human robot-collaboration, named also HRC, activities have been recognized as one of the pivotal solutions to increase efficiency. However, ...
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