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Št. zadetkov: 7
Experimental characterisation of laser surface remelting via acoustic emission wavelet decomposition
Bor Mojškerc, Dunja Ravnikar, Roman Šturm
Izvirni znanstveni članek
Oznake: lasers;surface remelting;acoustic emission;signal processing;wavelet;
This paper presents a novel technique of monitoring laser surface remelting (LSR) via measurements of process generated acoustic emission (AE). The LSR conditions include a variable laser power level and an ambient air or argon 5.0 inert gas atmosphere. The microstructure and microhardness of the re ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Investigation of laser surface remelting supported by acoustic emission analysis and machine learning
Dunja Ravnikar, Bor Mojškerc, Roman Šturm
Izvirni znanstveni članek
Oznake: laser surface remelting;microstructure;acoustic emission;machine learning;
In the present work, laser surface remelting (LSR) was carried out on C45 carbon steel using an Nd:YAG pulse laser. The effect of process parameters, such as different laser pulse durations and the absence or presence of a graphite absorber, on the microstructure, remelting depth, and microhardness ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
Effect of shot peening on the strength and corrosion properties of 6082-T651 aluminium alloy
Dunja Ravnikar, Roman Šturm, Sebastjan Žagar
Izvirni znanstveni članek
Oznake: udarno utrjevanje;aluminijeva zlitina;hrapavost površine;trdota po Vickersu;zaostale napetosti;odpornost proti koroziji;shot peening;aluminium alloy;surface roughnes;Vickers hardness;residual stresses;corrosion resistance;
This paper investigated the effect of shot peening on the strength and corrosion properties of 6082-T651 aluminium alloy. The microstructure, surface roughness, microhardness, residual stresses, and corrosion behaviour were investigated and compared with those of untreated aluminium alloy. Cracks an ...
Leto: 2023 Vir: Fakulteta za strojništvo (UL FS)
Energy density effect of laser alloyed TiB2/TiC/Al composite coatings on LMZ/HAZ, mechanical and corrosion properties
Dunja Ravnikar, Uroš Trdan, Aleš Nagode, Roman Šturm
Izvirni znanstveni članek
Oznake: lasersko legiranje površine;keramične prevleke;aluminijeve zlitine;mikrostruktura;mikrotrdota;obraba;korozija;laser surface alloying;ceramic coatings;Al alloy;microstructure;microhardness;wear;corrosion;
In the present work, TiC/TiB2/Al composite coatings were synthesized onto a precipitation hardened AlSi1MgMn alloy by laser surface alloying (LSA), using 13.3 J/mm2 and 20 J/mm2 laser energy densities. Microstructure evaluation, microhardness, wear and corrosion performance were investigated and com ...
Leto: 2020 Vir: Fakulteta za strojništvo (UL FS)
Electrochemical and DFT studies of laser-alloyed TiB2/TiC/Al coatings on aluminium alloy
Dunja Ravnikar, Ravi Shanker Rajamure, Uroš Trdan, Narendra B. Dahotre, Janez Grum
Izvirni znanstveni članek
Oznake: lasersko oplastenje aluminijeve zlitine EN AW 6082-T651;TiC-TiB2;jamičasta korozija;laser coating of aluminum alloy EN AW 6082-T651;pitting corrosion;
Microstructural and corrosion characteristic of laser-alloyed TiB2/TiC/Al composite coatings on 6082-T651 aluminium substrate were investigated. Density functional theory was used to study the chemical bonding of TiC and TiB2. The results confirmed a compact TiB2/TiC/Al-coating with low porosity, wi ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Women in the Canterbury tales: between a saint and a sinner
Mihaela Juričan, Tone Ravnikar, Dunja Jutronić
Diplomsko delo
Oznake: Geoffrey Chaucer;women;submission;late Middle Ages;Canterbury Tales;
The diploma thesis compares the life and the status of women in the late medieval society with some of the female characters from the Canterbury Tales. The author of these Tales is Geoffrey Chaucer who is often named the Father of English Poetry. Beside his life and work this diploma thesis also pre ...
Leto: 2011 Vir: Filozofska fakulteta (UM FF)
Biologija viroida razpokanosti skorje agrumov (CBCVd) in razvoj metod za določanje viroidov v hmelju
Tanja Guček, Sebastjan Radišek, Jernej Jakše, Stanislav Trdan, Maja Ravnikar, Dunja Bandelj Mavsar
Doktorska disertacija
Oznake: hmelj;viroid;viroid razpokanosti skorje agrumov (CBCVd);huda viroidna zakrnelost hmelja;umetna okužba;gostiteljska specifičnost;metode za določanje viroidov;
Huda viroidna zakrnelost, ki jo povzročata viroida CBCVd in HLVd, je ena izmed najhujših bolezni hmelja. V okviru disertacije smo analizirali gostiteljsko specifičnost viroida CBCVd, stabilnost, širjenje in vpliv bolezni na hmelj ter razvili metode za umetno okuževanje, sočasno določanje in kvantifi ...
Leto: 2020 Vir: Biotehniška fakulteta (UL BF)
Št. zadetkov: 7
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