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Modification of the focusing part of the table-top setup for Laser Induced Breakdown Spectroscopy (LIBS)
Borovský, Ján ; Prochazka, David (referee) ; Samek, Ota (advisor)
This bacheolor thesis solves functional modifications of the foccusing part of the table-top setup for laser induced breakdown spectroscopy LIBS. Main requirements for modified draft includes increasing view field of the navigation camera, increasing the setup’s aperture and prevention of the camera destruction by radiation of plasma. These requirements were fulfilled in new draft of optical stand including possible solution as enlarging focusing lens, new dielectric mirror and mechanical iris shutter. Some elements of proposed solution will be used in suggestion of Tescan company‘s new interaction chambers for LIBS analysis.
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Optimization of a part production made of a structural 20 mm thick steel using laser cutting technology
Šoukal, Hynek ; Hála, Michal (referee) ; Mrňa, Libor (advisor)
The thesis deals with the optimization of process parameters in the oxidative laser cutting of structural 20 mm thick steel with regard to the type of material, the resulting roughness of the cut and the resulting price of the product. In line with the literary study and the Taguchi method, an experiment was developed. The cutting speed, laser performance, cutting gas pressure, and focal position were controlled during the experiment. Sample sets were cut with 7.5" and 10" focusing lens from the TATA STEEL S355MC and SSAB LASER 355 MC steels. According to ČSN EN ISO 9013, the samples were evaluated for roughness. Then micro and macro structures were evaluated, and compare the hardness according to Vickers. In conclusion, technical and economic evaluation was determined.
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Optimization of a part production made of a structural 20 mm thick steel using laser cutting technology
Šoukal, Hynek ; Hála, Michal (referee) ; Mrňa, Libor (advisor)
The thesis deals with the optimization of process parameters in the oxidative laser cutting of structural 20 mm thick steel with regard to the type of material, the resulting roughness of the cut and the resulting price of the product. In line with the literary study and the Taguchi method, an experiment was developed. The cutting speed, laser performance, cutting gas pressure, and focal position were controlled during the experiment. Sample sets were cut with 7.5" and 10" focusing lens from the TATA STEEL S355MC and SSAB LASER 355 MC steels. According to ČSN EN ISO 9013, the samples were evaluated for roughness. Then micro and macro structures were evaluated, and compare the hardness according to Vickers. In conclusion, technical and economic evaluation was determined.
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Modification of the focusing part of the table-top setup for Laser Induced Breakdown Spectroscopy (LIBS)
Borovský, Ján ; Prochazka, David (referee) ; Samek, Ota (advisor)
This bacheolor thesis solves functional modifications of the foccusing part of the table-top setup for laser induced breakdown spectroscopy LIBS. Main requirements for modified draft includes increasing view field of the navigation camera, increasing the setup’s aperture and prevention of the camera destruction by radiation of plasma. These requirements were fulfilled in new draft of optical stand including possible solution as enlarging focusing lens, new dielectric mirror and mechanical iris shutter. Some elements of proposed solution will be used in suggestion of Tescan company‘s new interaction chambers for LIBS analysis.
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