Faculty of Mechanical Engineering
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Item type:Publication, Proper edge-colorings with a rich neighbor requirement(Elsevier BV, 2024-03) ;Petruševski, MirkoŠkrekovski, RisteUnder a given edge-coloring of a (multi)graph $G$, an edge is said to be rich if there is no color repetition among its neighboring edges; e.g., any isolated edge is rich. A rich-neighbor coloring of $G$ is a proper edge-coloring such that every non-isolated edge has at least one rich neighbor. For this weaker variant of strong edge-colorings, we believe that every connected subcubic graph apart form $K_4$ admits a rich-neighbor 5-coloring. In support of this, we show that every subcubic graph admits a rich-neighbor 7-coloring. The paper concludes with few open problems for subcubic graphs concerning the analogous notions of normal-neighbor colorings and poor-neighbor colorings. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Gas Shielded Metal Arc Brazing of Surface Zinc Coated Thin Steel Sheet(25 Jubilee Scientific Conference, MTF 2007, 14-16 September, Sozopol Bulgaria, Proceedings, Vol. 1, pp. 182-187, 2007-09-15)Runchev Dobre, Dorn Lutz - Some of the metrics are blocked by yourconsent settings
Item type:Publication, HEATED TOOL BUTT WELDING OF POLYETHYLEN PIPES(DEMI 2011 : 10th Anniversary International Conference on Accomplishments in Electrical and Mechanical Engineering and Information Technology : Proceedings , University of Banja Luka, Faculty of Mechanical Engineering, 2011-05-27)Runchev Dobre, Gligorche Vrtanoski, Ljupcho Trpkovski - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Hybrid laser arc welding: State of the art in technology(DUZS - Društvo za unapreñivanje zavarivanja u Srbiji, 2021-09-15)Martin Petreski, Dobre Runchev, Gligorche Vrtanoski - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Influence of the filler material on the mechanical characteristics of structural steel GMAW and MCAW welded joints(INTERNATIONAL SCIENTIFIC JOURNAL "MACHINES, TECHNOLOGIES, MATERIALS" Issue 11/2022, 2022-11)Martin Petreski, Dobre Runchev, Gligorche Vrtanoski - Some of the metrics are blocked by yourconsent settings
Item type:Publication, IMPACT ANALYSIS OF THE HYBRID LASER ARC WELDING PARAMETERS OF STRUCTURAL STEELS – STATE OF THE ART(DUZS - Društvo za unapreñivanje zavarivanja u Srbiji, 2023-12-22)Petreski, Martin; Runchev, Dobre; Vrtanoski, Gligorche; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Welding technology of martensitic steel P91 and austenitic steel 304H – State of the art(INTERNATIONAL SCIENTIFIC JOURNAL "MACHINES, TECHNOLOGIES, MATERIALS" Issue 1/2023, 2023-03-15)Aleksandra Krstevska, Dobre Runchev, Filip Zdraveski - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Influence of Edge Surface Quality on Hybrid Laser Arc Welding of Structural Steel S355J2(77th IIW Annual Assembly and International Conference, C-IV: Power Beam Processes, 2024-07-12)Martin, Petreski; Dobre, Runchev; Gligorche, Vrtanoski; Aleksandra, Krstevska - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Welding tehnology for steel P460NL2(Centre for Evaluation in Education and Science (CEON/CEES), 2022) ;Poser, Maja; <jats:p>This paper presents the development of welding technology for P460NL2 steel with a thickness of 30 mm. The technology was developed for the purpose of producing housings in which the device PIG-Pipeline Inspection/Intervention Gauge intended for testing and maintenance of pipelines is installed. In this particular case, the housings were intended for cleaning pipelines for the transport of acid-aggressive gases. The material was selected in accordance with NACE MR0175/ISO 15156 and ASME BPVC IKS standards. The welding technology is made for butt joint, root pass with GMAW, and other layers filled with SAW. Preheating and heat treatment after welding were performed to restore the structure. Standard tests are conducted such as: metallography, hardness test, tensile test and toughness, and the results are presented and commented in this paper. In conclusion, the welding technology gives satisfactory results, but, in terms of meeting the specifics of the NACE MR0103 and MR0175 standards, it shows increased hardness in the transition zone, in the HAZ.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, IMPACT OF BASALT BASED THREAD LININGS ON THE TRIBOLOGICAL PARAMETERS OF THE CLUTCH LININGS FOR MOTOR VEHICLES(Tehnički vjesnik, 2016) ;Darko Danev ;Simeon SimeonovVase JordanoskaFriction clutches are still the most widely used type of coupling especially in passenger vehicles. Structural construction of friction clutches is not changed significantly, but their performance is what is constantly being improved. Among other factors that determine the life of the friction clutch i.e. of the friction disk is the quality and friction characteristics of linings. This paper presents the results of experimental research of the impact of the material composition of the linings on the tribological parameters. Specifically are shown the improvements that can be achieved with the use of basalt thread in the material composition of the friction linings
