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Št. zadetkov: 8
Vpliv skupkov nehomogenosti zaradi tlačnega litja na dobo trajanja ulitkov
Dejan Tomažinčič, Jernej Klemenc
Doktorska disertacija
Oznake: aluminijeva zlitina;visokotlačno litje;makro poroznost;avksetičnost;povratni inženiring;malociklična trdnost;metoda končnih elementov;poškodbe;Taguchijeva metoda;disipacija energije;
Pri obravnavi ulitkov se večina dosedanjih raziskav omejuje le na vpliv posameznih, izoliranih por. Ta doktorska naloga se zato osredotoča na slabše raziskano področje vpliva obsežne makro poroznosti na dobo trajanja. Gre za celovito raziskavo pogosto uporabljene aluminijeve zlitine v livarski indus ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Estimate of Coffin–Manson curve shift for the porous alloy AlSi9Cu3 based on numerical simulations of a porous material carried out by using the Taguchi array
Dejan Tomažinčič, Jernej Klemenc
Izvirni znanstveni članek
Oznake: malociklično utrujanje;aluminijeve zlitine;poroznost;soodvisnost Coffin-Manson;Taguchi;multivariatna regresijska analiza;low-cycle fatigue;aluminium alloys;porosity;Coffin–Manson relationship;multivariate regression analysis;
In real engineering applications, machine parts are rarely completely homogeneous; in most cases, there are at least some minor notch effects or even more extensive inhomogeneities, which cause critical local stress concentrations from which fatigue fractures develop. In the present research, a shif ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
Prediction of static and low-cycle durability of porous cellular structures with positive and negative Poisson's ratios
Dejan Tomažinčič, Matej Vesenjak, Jernej Klemenc
Izvirni znanstveni članek
Oznake: malo-ciklično utrujanje;odstranitev elementov;aluminijeve zlitine;oksetični materiali;satovje;gostota energije specifične deformacije;low-cycle fatigue;element removal;XFEM;aluminium alloy;auxetic;honeycomb;strain-energy density;
The static and low-cycle durability of three planar cellular structures, hexagonal, auxetic and auxetic-chiral, have been compared. The three structures have the same critical cross-section and are made from an aluminium alloy Al7075-T651. The reference region of each structure is represented by a m ...
Leto: 2020 Vir: Fakulteta za strojništvo (UL FS)
Low-cycle fatigue life of thin-plate auxetic cellular structures made from aluminium alloy 7075-T651
Dejan Tomažinčič, Branko Nečemer, Matej Vesenjak, Jernej Klemenc
Izvirni znanstveni članek
Oznake: aluminium alloys;auxetic;damage models;low-cycle fatigue;theoretical-experimental approach;
In the article, the low-cycle fatigue life durability of thin-plate auxetic cellular structures is compared with the thin-plate specimens of standard shape. Both the re-entrant auxetic cellular structures and the standard specimens were cut from a 2mm-thick strip of aluminium alloy 7075-T651. First, ...
Leto: 2019 Vir: Fakulteta za strojništvo (UL FS)
Improved prediction of low-cycle fatigue life for high-pressure die-cast aluminium alloy AlSi9Cu3 with significant porosity
Dejan Tomažinčič, Matej Borovinšek, Zoran Ren, Jernej Klemenc
Izvirni znanstveni članek
Oznake: low-cycle fatigue;alloy AlSi9Cu3;porosity;notch-strain approach;finite element removal;
The fatigue life of a high-pressure die-cast alloy, AlSi9Cu3, with significant porosity is investigated. Standard specimens were cyclically loaded (R =-1) until fatigue rupture occurred. The specimens were [micro]-CT scanned to obtain a 3D representation of the pores. Models were used to computation ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Predicting the fatigue life of an AlSi9Cu3 porous alloy using a vector-segmentation technique for a geometric parameterisation of the macro pores
Dejan Tomažinčič, Žiga Virk, Peter Kink, Gregor Jerše, Jernej Klemenc
Izvirni znanstveni članek
Oznake: zlitina AlSi9Cu3;makro-poroznost;vektorska segmantacija;model eliptične pore;visokotlačno litje;AlSi9Cu3 alloy;macro porosity;vector segmentation;elliptical pore model;high-pressure die-casting;
Most of the published research work related to the fatigue life of porous, high-pressure, die-cast structures is limited to a consideration of individual isolated pores. The focus of this article is on calculating the fatigue life of high-pressure, die-cast, AlSi9Cu3 parts with many clustered macro ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Durability prediction of cyclically loaded CP-W800 fillet welds
Dejan Tomažinčič, Peter Zobec, Marko Vrh, Aleš Gosar, Jurij Švegelj, Matic Muc, Vili Malnarič, Jernej Klemenc, Domen Šeruga
Izvirni znanstveni članek
Oznake: kotni zvar;metoda končnih elementov;kompleksna jekla;utrujanje;zdržljivost;fillet weld;finite element method;complex-phase steel;fatigue;durability;
Two methods of durability prediction of fillet welds were researched in this study. Namely, the structural Hot-Spot method and the structural stress method fe-safe Verity were applied to fatigue life estimation of a double plate lap fillet weld made of high-strength complex phase CP-W800 steel. Dura ...
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
Razvoj večnamenskih avksetičnih celičnih struktur
Matej Vesenjak, Srečko Glodež, Zoran Ren, Miran Ulbin, Matej Borovinšek, Nejc Novak, Marko Šori, Jernej Klemenc, Marko Nagode, Aleš Gosar, Andrej Škrlec, Mitja Franko, Tadej Kocjan, Dejan Tomažinčič
Končno poročilo o rezultatih raziskav
Oznake: materiali;avksetične celične strukture;mehanske lastnosti;deformacije;konstruiranje;
Razvoj večnamenskih avksetičnih celičnih struktur
Leto: 2021 Vir: Fakulteta za strojništvo (UM FS)
Št. zadetkov: 8
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