CHaloska, Jasmina
Preferred name
CHaloska, Jasmina
Official Name
CHaloska, Jasmina
Main Affiliation
Email
jasmina.chaloska@mf.edu.mk
3 results
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Item type:Publication, Impact of Construction Machinery and Tools on Non-Fatal Injuries in the Building Processes(Mechanical Engineering Faculty in Slavonski Brod, 2018-12); ; Vujkov, Aleksandra - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of longitudinal and cross feed on flatness and surface roughness in flat grinding(University Library in Kragujevac, 2025-03-31); This research focuses on analyzing the impact of longitudinal and cross feed on the grinding quality, with particular emphasis on the parameters of surface roughness and flatness of the machined surfaces. The main objective is to examine how different combinations of these parameters affect the surface roughness and flatness. The experimental study is conducted using a surface grinding machine, where roughness (Ra) and flatness are measured under various longitudinal and cross feed settings. A full-factorial experimental design is implemented to systematically analyze the interaction between these factors. Statistical methods, including regression analysis, are used to determine the significance of the variables and their effect on surface characteristics. The results indicate that both longitudinal and cross feed affect the roughness and flatness of the machined surfaces. These findings highlight the need to optimize process parameters to balance surface roughness and flatness for improved machining performance. The insights gained from this research provide valuable guidelines for optimizing grinding operations in industrial applications, ultimately enhancing efficiency and product quality. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Conformal Cooling Channels in Injection Molding Tools - Design Considerations(Scientific-Technical Union of Mechanical Engineering “INDUSTRY 4.0”, 2018-12); ; ; Spiroski, ZoranThis scientific paper presents the research conducted for defining the characteristics of the conformal cooling systems used in molds for injection molding processes (IMP). By utilizing laser-sintering additive manufacturing (AM) technologies, this type of cooling systems could be used to minimize the cooling and cycle times in the IMP’s and provide a homogeneous cooling necessary to maintain a consistent quality of the part. The paper also presents an overview of the AM technologies used in manufacturing conformal cooling molds and the main guidelines for designing these cooling systems. The research shows that the efficiency of these channels is based on the channel system’s design and for plastic parts with a lower complexity the improved temperature distribution compared to conventional cooling systems could be negligent. The research is conducted by using Finite Element Analysis (FEA) and CAD modeling to compare different conformal shapes, as well as their cooling efficiency on a plastic part. The simulation studies are done to determine the temperature distribution in each case study. These trials are done to assess the productivity benefits that arise from the use of conformal cooling channels compared to conventional channels that utilize baffles and bubblers