Industri- och materialvetenskap (IMS) // Industrial and Materials Science (IMS)
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Studying at the Department of Industrial and Materials Science at Chalmers
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Browsar Industri- och materialvetenskap (IMS) // Industrial and Materials Science (IMS) efter Program "Engineering Physics (300 hp)"
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- PostAGV-system för minifabrik(2017) Bernhartz, Henrik; Hill, Martin; Jönsson, Samuel; Liu, Jerry; Ljungquist, Gustav; Wallman, Philip; Chalmers tekniska högskola / Institutionen för produkt- och produktionsutveckling; Chalmers University of Technology / Department of Product and Production Development
- PostApplication of Additive Manufacturing for Spare Parts in the Automotive Industry(2018) Blennow, Amanda; Frick, Philip; Gardfjell, Martin; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials ScienceThe injector yoke treated in this thesis, is one of the Volvo Group’s many spare parts. The yokes have earlier been produced in large scale and kept in stock at a central warehouse. Although Additive Manufacturing (AM) has largely been focused on fields where high manufacturing costs have been acceptable, it is now also believed to be a possible solution to avoid unnecessary large scale production and storage of these yokes. This thesis is a partnership between the Volvo Group, students from The Pennsylvania State University, and students from Chalmers University of Technology with the aim to investigate the possibilities of spare part manufacturing using AM. Provided with initial models, engineering drawings, and boundary conditions from the Volvo Group, initial research was conducted to optimize the current model for an additive manufacturing viewpoint. Different methods for additive manufacturing were examined and described in the report. Also, the economical aspects were analyzed. The result of the project was a design for an injector yoke, capable of replacing the original part with a volume reduction of 28.4%, and a recommendation to use DMLS by EOS for this kind of products. The conclusion that AM would not be a profitable manufacturing option at this time was drawn.
- PostBiomekanisk modellering av höftleden för utveckling av planeringsverktyg till ortopeder(2016) Ahmadyan, Nima; Hansson, Annika; Johansson, Elin; Larsson, Jenny; Risberg, Jonathan; Södermark, Gustav; Chalmers tekniska högskola / Institutionen för produkt- och produktionsutveckling; Chalmers University of Technology / Department of Product and Production Development
- PostEnergioptimering av krossning och malning inom gruvindustrin - Sönderdelningsförmåga av kopparslagg i konkross och kulkvarn(2017) Andersson, Johan; Rask-Andersen, Viktor; Rydin, Anna; Chalmers tekniska högskola / Institutionen för produkt- och produktionsutveckling; Chalmers University of Technology / Department of Product and Production Development
- PostRadar Transparency and Paint Compatibility - A Study of Automobile Bumper and Bumper-Skin Complex Permittivities for 77GHz Microwaves(2017) Emilsson, Erik; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials ScienceThis study aims to identify the key factors, regarding bumper and bumper coatings, that affect radar transparency for radar at 77GHz. Dielectric spectroscopy in the 60-90GHz microwave region was performed using the free- space method was performed on 21 flat plastic substrates with various combinations of primers, basecoats and topcoats. 4 additional plates were repainted to simulate aftermarket paint. The substrates were PP-blends and some of the basecoats had effect pigments such as aluminum metal flakes, mica and Xiralic. The samples were received from a Volvo Cars supplier, so there is limited information of the composition of plastic substrates and coatings available. The free space method was done using a two-port network analyzer. Time-domain clipping and normalization was done on the S-parameters. Complex permittivities for each plastic substrate and coating were calculated from the curve fitting values of a multi-layer dielectric model. Both the obtained radar measurements and thickness measurements were required for the calculation of the permittivities. Thickness measurements were done on the cross-sections of all cut samples using an optical microscope. Effect pigments were observed in both optical microscope and SEM. FT-IR spectroscopy was done on the plastic substrates to obtain information on the compositions. TGA was done on the plastic substrates to measure polymer matrix and filler concentrations. DCS was done on the plastic substrates percent crystallinity was calculated using a reference value for the enthalpy of 100% crystallinity for Polypropylene, after deducting the fillers. The results from the materials analyses were compared to the calculated permittivities. Reflection losses, were modeled with MATLAB to show the approximate permittivities of the aftermarket basecoats that were difficult to perform curve fittings on. Metal flake content correlated to a greater real permittivity of the basecoats. A non- metallic effect pigment in similar concentrations as the metal flakes also increased real and imaginary permittivity in a basecoat. Talc, and likely carbon black, also increased real permittivity. MATLAB was also used to show that plastic substrate thickness is to minimize unwanted reflections in radar, as well as a low permittivity for the basecoat.
- PostRobot Prototyping(2013) Hägerstrand, Markus; Lindholm, Robin N C; Nilsson, Tomas; Chalmers tekniska högskola / Institutionen för produkt- och produktionsutveckling; Chalmers University of Technology / Department of Product and Production Development
- PostSatellitnavigerad robotgräsklippare med RTK(2016) Baerveldt, Martin; Helmersson, Pontus; Ingemarsson, Samuel; Ohm, Viktor; Uusitalo, Nicholas; Wessman, Arthur; Chalmers tekniska högskola / Institutionen för produkt- och produktionsutveckling; Chalmers University of Technology / Department of Product and Production Development
- PostSlagtåligare längdskidstav för elitskidåkare(2016) Danielsson, Carl; Johansen, Marcus; Lenning, Erik; Olofsson, Caroline; Chalmers tekniska högskola / Institutionen för tillämpad mekanik; Chalmers University of Technology / Department of Applied Mechanics
- PostTaking IKEA's payment model into the future: evaluating and developing payment systems from the customers perspective(2019) Letfors, Anna; Persson, Matilda; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science