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Št. zadetkov: 4
Determination of fracture toughness and resistance curves by three methods on armoured steel
Mirza Manjgo, Srečko Glodež, Gorazd Lojen, Tomaž Vuherer
Izvirni znanstveni članek
Oznake: mehanika loma;upor;krivulje;Protac 500;fracture mechanics;KJIC;resistant curves;
Parameters of EPFM are used as relevant parameters in structural integrity assessments. In this research, the fracture toughness of armoured steel was determined. The resulting resistance curves and KJIC obtained according to the ASTM E1820 standard with normalization, compliance and multi-specimen ...
Leto: 2025 Vir: Fakulteta za strojništvo (UM FS)
Comparison of the mechanical properties of hardfacings made by standard coated stick electrodes and a newly developed rectangular stick electrode
Edvard Bjelajac, Andrej Skumavc, Gorazd Lojen, Mirza Manjgo, Tomaž Vuherer
Izvirni znanstveni članek
Oznake: navarjanje;hitrost redčenja;trdota;udarna žilavost po Charpyju;zaostale napetosti;lomna žilavost;hardfacing;dilution rate;hardness;Charpy impact toughness;residual stress;fracture toughness;
Cladding with a stick electrode is one of the oldest arc processes for adding a deposit on a base material. The process is suitable for outdoor working, but the disadvantages are low productivity and large dilution rates. In this work, a simple solution is proposed, which would enable cladding of a ...
Leto: 2024 Vir: Fakulteta za strojništvo (UM FS)
Simulation and mechanical properties of fine-grained heat-affected zone microstructure in 18CrNiMo7-6 steel
Tomaž Vuherer, Fidan Smaili, Edvard Bjelajac, Mirza Manjgo, Gorazd Lojen
Izvirni znanstveni članek
Oznake: zvarni spoji;mehanika loma;simulacija mikrostrukture;trdota;udarna žilavost;natezne lastnosti;utrujenostna rast razpoke;jeklo 18CrNiMo7-6;weld joint;fine-grained HAZ;simulation of microstructure;hardness;impact toughness;tensile properties;fatigue crack growth;18CrNiMo7-6 steel;
Heat-affected zones (HAZs) in real welds are usually quite narrow, and consequently most standard mechanical tests are difficult or even impossible. Therefore, simulated microstructures are often used for mechanical tests. However, the most often used weld thermal cycle simulator produces only a few ...
Leto: 2022 Vir: Fakulteta za strojništvo (UM FS)
Comparison of three methods of measuring residual stresses in welded joints of high-strength steel S960QL
Mirza Manjgo, Gorazd Lojen, Nenad Gubeljak, Blaž Karpe, Tomaž Vuherer
Izvirni znanstveni članek
Oznake: zvarni spoji;visokotrdnostno jeklo;zaostale napetosti;magnetna metoda;metoda rentgenske difrakcije;metoda vrtanja lukenj;welded joints;high-strength steel;residual stress;magnetic method;X-ray diffraction method;hole drilling method;
The influence of residual stresses as a result of the welding process in the overall stress state of the weld joint is of great importance because they significantly affect the creation and growth of cracks, the occurrence of brittle fracture, and material fatigue. Previous experiences indicate that ...
Leto: 2025 Vir: Fakulteta za strojništvo (UM FS)
Št. zadetkov: 4
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