20.500.12556/RUL-81636 Postopek za analizo reza narejenega z laserskim žarkom Procedure for analysis of cut performed with laser beam Diplomska naloga raziskuje možnost uporabe računalniškega algoritma za analizo reza laserskega žarka iz zajete slike testnega vzorca, kot enakovredno metodo analize ročni aplikativni metodi. Le-ta je priljubljena zaradi svoje enostavnosti in nizke cene, ampak ima tudi svoje slabosti, kot sta potrebno predznanje posameznika, ki opravlja analizo in subjektivnost interpretacije rezultatov. S pomočjo namensko razvitega algoritma za analizo reza laserskega žarka se je mogoče izogniti slabostim ročne analize, saj algoritem hitro in objektivno interpretira rezultate. V prvem poglavju je na kratko predstavljeno lasersko strukturiranje, lastnosti laserske svetlobe in delitev obstoječih metod za določitev položaja fokusa laserskega žarka. V drugem poglavju je podrobneje predstavljena aplikativna metoda analize in vpliv posameznih parametrov laserskega žarka ter parametrov strukturiranja na končni vzorec. Analiza z algoritmom je opisana v tretjem poglavju in poteka na sliki namensko zasnovanega testnega vzorca, ki omogoča določitev iskanih parametrov. Algoritem omogoča določitev grobe ocene položaja fokusa, natančno oceno položaja fokusa z oceno astigmatizma na materialu in najvišjo hitrost strukturiranja testnega materiala. Delovanje algoritma je bilo preizkušeno na več laserskih virih in rezultati so bili primerjani z rezultati ročnega aplikativnega pristopa v četrtem poglavju. Opravljeni so bili tudi testi ponovljivosti rezultatov analize z algoritmom, občutljivosti na jakost osvetlitve testnega vzorca, vpliv premika testnega materiala in vpliv hitrosti strukturiranja, oziroma ožganin na končni rezultat analize. Preko testiranja je bilo dokazano, da je analiza s pomočjo algoritma za analizo reza povsem primerljiva z metodo ročne analize. The thesis discusses the possibility for the use of a computer algorithm to perform laser cut analysis from the picture of a structured test sample, as an equivalent method to the classic manual applicative cut analysis. The applicative laser cut analysis is a popular method because of its simplicity and low cost, but it also has some drawbacks, such as experience requirements of the operator and subjective result interpretation. The mentioned drawbacks of the manual applicative method can be avoided with the use of the algorithm analysis, which was designed for this task. The algorithm analysis is a fast and objective process of interpreting results and it does not require a high level of experience from the operator. The first chapter describes laser structuring, laser light properties and existing methods of determining laser focus position. The applicative method of laser cut analysis and the influence of laser source and structuring parameters on the structured sample are described in the second chapter. The third chapter describes the algorithm analysis, which is performed on a picture of a specifically designed test sample. The test sample has a specific structure, from which the searched parameters values can be found. The algorithm can perform a rough beam focus position estimation, a fine beam focus estimation with astigmatism estimation and maximum structuring speed estimation. The algorithm was tested on multiple laser sources and the test results were compared with the results of the manual applicative method in the fourth chapter of the thesis. Additional testing was performed to assess the analysis repeatability, test sample lighting influence, material position change and structuring speed influence on the analysis results. Test results proved that the algorithm analysis is perfectly comparable to the manual applicative method results. lasersko strukturiranje laserski žarek analiza reza laserskega žarka fokus laserskega žarka astigmatizem najvišja hitrost strukturiranja laser structuring laser beam laser cut analysis laser focus astigmatism maximum structuring speed true false false Slovenski jezik Angleški jezik Diplomsko delo 2016-04-21 15:05:01 2016-04-21 15:05:04 2022-08-01 22:17:24 0000-00-00 00:00:00 2016 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 32702 Sabadin_Matej_-_Postopek_za_analizo_reza_narejenega_z_laserskim_zarkom.pdf Sabadin_Matej_-_Postopek_za_analizo_reza_narejenega_z_laserskim_zarkom.pdf 1 BD2BD46DE9FAC85EF3735CE3F0A921E2 8e6f1154c4e206da45f69643b857589ef769fe74de2359e6f0be1690dc1a17ab 6fe10da4-a1ad-11eb-a523-00155dcfd717 20.500.12556/rul/170d045b-a4a1-4efd-8aa4-c68fd2f8f38e https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=81852 Fakulteta za elektrotehniko 0 0 0