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1.
Simulation of Dual-Beam Laser Metal Deposition : magistrsko delo
Matej Kočevar, 2021, master's thesis

Abstract: Laser metal deposition process plays an important role in the coating and additive manufacturing of the components. Implementation of dual-beam process represents a further development and offers the advantage of laser ablation process, which provides exert force on the melt pool and increases absorption properties of the workpiece for laser light in comparison to conventional laser metal deposition processes. The main goal of the present work is to predict temperature distribution on the surface and in the cross-section during a dual-beam laser metal deposition. A better understanding of temperature distribution of the dual-beam laser metal deposition is crucial for analyzing the impact of different process parameters on the process. The prediction of temperature distribution was done using the version 6.14-6 of finite element software ABAQUS/Standard from Dassault Systèmes. The results of the simulations show that the temperature distribution in the case of dual-beam laser metal deposition can be determined with minimum deviation by utilizing the finite element analysis.
Keywords: Laser Metal Deposition (LMD), dual-beam process, wire-based Laser Metal Deposition (LMD-w), Finite Element Method (FEM)
Published in DKUM: 23.09.2021; Views: 1171; Downloads: 67
.pdf Full text (3,37 MB)

2.
Primerjava metod za merjenje sprednjega dela ohišja ventila splakovalnika : diplomsko delo
Matej Kočevar, 2018, undergraduate thesis

Abstract: V proizvodnem procesu ima kontrola izdelkov pomembno vlogo. S sprotno kontrolo se hitro zaznajo morebitne napake na izdelku, s čimer lahko preprečimo veliko količino izmeta. V diplomski nalogi je obravnavano področje tipalnih in optičnih trikoordinatnih meritev. V teoretičnem delu so predstavljene osnove meroslovja, trikoordinatna merilna tehnika in merilne naprave. V empiričnem delu diplomske naloge predstavimo izdelek, merjene veličine, izvedbo meritev in rezultate. Prve meritve smo izvedli na trikoordinatni merilni napravi s pomočjo mehanskega tipala. Nato smo meritve izvedli na kombinirani merilni napravi, kjer smo merili z optičnim senzorjem in tipalom. Sledi opis meritev na prenosnem laserskem 3D skenerju. Zaključimo s primerjavo merilnih rezultatov in izbiro najprimernejše metode za sprotno kontrolo izdelkov v proizvodnem procesu podjetja.
Keywords: merjenje, geometrijske specifikacije proizvoda, trikoordinatna merilna tehnika, kakovost
Published in DKUM: 07.09.2018; Views: 1631; Downloads: 68
.pdf Full text (7,11 MB)

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