[kand] Insinööritieteiden korkeakoulu / ENG
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- 15 minuutin kaupungin mahdollisuudet ja haasteet
Insinööritieteiden korkeakoulu | Bachelor's thesis(2024-04-21) Kaunonen, Leevi15 minuutin kaupunki on koronapandemian myötä runsaasti suosiota saavuttanut kaupunkisuunnittelun konsepti, jonka mukaan kaikkien peruspalvelujen tulisi sijaita enintään 15 minuutin kävely- tai pyörämatkan päässä kotoa. 15 minuutin kaupunki pyrkii parantamaan asukkaiden elämänlaatua ja vastaamaan ilmastonmuutokseen turhaa ajoneuvoliikennettä vähentämällä. Tässä kandidaatintyössä olen selvittänyt 15 minuutin kaupungin teoriaa, pohtinut julkisen liikenteen roolia, selvittänyt konseptin historiallista taustaa ja esittänyt konseptiin liittyvää kritiikkiä. Olen myös tarkastellut muutaman tutkimuksen avulla, miten 15 minuutin kaupungin malli toteutuu erilaisissa kaupungeissa. Tässä työssä havaittiin 15 minuutin kaupungin konseptin arvo helposti ymmärrettävänä kaupunkisuunnittelun konseptina, jonka tavoitteet ovat selkeät. Tästä huolimatta työssä havaittiin myös konseptiin liittyviä heikkouksia, liittyen esimerkiksi sen soveltuvuuteen erilaisissa kaupunkiympäristöissä. - 15 minuutin kaupunki – 2020-luvun vastaus tuttuihin ongelmiin
Insinööritieteiden korkeakoulu | Bachelor's thesis(2021-12-05) Eilola, Ella - 1800-luvulla rakennettujen kerrostalojen puisten väli- ja yläpohjarakenteiden säilyttäminen
Insinööritieteiden korkeakoulu | Bachelor's thesis(2017-04-29) Järvinen, Teemu - 1960- ja 1970-lukujen lähiöiden aluerakentaminen Suomessa
Insinööritieteiden korkeakoulu | Bachelor's thesis(2011) Lindberg, Liina - 3D lujiteaihioiden valmistus ja käyttö
Insinööritieteiden korkeakoulu | Bachelor's thesis(2011) Karme, Jari - 3D Modeling Techniques and CAD/CAM Data Exchange
Insinööritieteiden korkeakoulu | Bachelor's thesis(2021-05-07) Nystrand, Mattias - 3D printed aluminium plasticity model
Insinööritieteiden korkeakoulu | Bachelor's thesis(2024-12-07) Karv, AxelLPBF (Laser Powder Bed Fusion) is a relatively new additive manufacturing (AM) technique. This study treats properties of AM aluminium, a material that have a lot of potential of making parts lighter while keeping the same strength. Parts with these properties have lots of use cases in competitive racing, aerospace industry, and research and development. However, there are currently many fitted models for AM aluminium (AlSi10Mg), but not a model that takes the anisotropic deformation into account, this is needed to predict fractures. A plasticity model is needed to know where material can be removed to create a more material effective part. This thesis will be fitting the evolving non-associated Hill48 (enHill48) plasticity model from experimental data for the AM aluminium (AlSi10Mg). The goal of the thesis is to create a clear and easy to understand explanation on how the plasticity model were fitted and how the simulations were run. To start with tensile testing experiments were done with different shapes and thicknesses of test pieces. While tensile experiment was in progress, a digital image correlation (DIC) was made. Using the tensile testing experimental data with the help of digital image correlation can be made into a true stress and effective plastic strain. A materials property file is fitted based on this experimental data; the material properties describe how the material behaves during loading. To validate the plasticity model, I started by creating CAD-models and meshes for the same geometries and thickness as the experimental parts. Then I made many iterations of the model, and many made fit improvements after each run. It could be seen from the first results that the material pro erties underestimated the experiment. The under estimation mainly started after the yield point and became bigger towards the end. This was an optimization process of creating a new fit to better match with the experimental data. The simulation was run with Abaqus explicit which is a known program in the industry. It is concluded that the enHill48 model can be applied in prediction of plasticity behaviour of anisotropic material and that it describes the force displacement relations well. The fitment of the plasticity model has been validated, and the next step in the research of AM aluminium would be to investigate fracture mechanisms. - 3D Printing Large-Scale Metal Objects
Insinööritieteiden korkeakoulu | Bachelor's thesis(2024-09-06) Olander, Oscar3D-printing is an additive manufacturing technique where material is added to form objects. Unlike subtractive manufacturing methods where material is removed to form objects, thin layers are deposited on top of each other and bonded together. Additive manufacturing methods have been explored since the 1980s and were used to fabricate prototypes in the beginning. Since then, there have been advancements in the technology and fabrication of final products has become possible. A major advantage with additive manufacturing compared to traditional subtractive manufacturing is the possibility to fabricate complex shapes. The method applicable for manufacturing large metal objects is essentially an automated welding technique. The method is called directed energy deposition and consists of creating a melt pool with a heat source and adding feedstock material to the melt pool. When the material has been added the heat source moves on and the melt pool solidifies. Repeating this process creates a layer. Then many layers are formed to fabricate the object. The material can be deposited in either wire or powder form, each with its advantages. Deposition speed is faster with wire, while powder allows for thinner layers and smoother surface roughness. The significant advancement in the fabrication of large parts came with the use of robotic arm and gantry systems. With the help of the gantry systems, the robotic arms can be moved, thus greatly increasing the build volume. The robotic arms used have more than three degrees of freedom, meaning they can add material from any direction. This plays a crucial role in reducing the amount of support structures needed during the fabrication stage. Curved layers are also possible to manufacture thanks to the robotic arms. Using curved layers eliminates the problem of the staircase effect which is layers fabricated in one plane and leads to weaker bonds between layers and poor surface roughness. Additive manufacturing is expected to become an increasingly common manufacturing method in the future due to its cost-effectiveness, time efficiency and ability to fabricate complex geometries. The additive manufacturing techniques will first be used in the aviation and space industries, where the greatest benefits are realized by fabricating complex parts that withstand the conditions and weigh less than their traditionally manufactured counterparts. Later, as additive manufacturing methods become more developed, they will spread to different industries. - 3D Ristikkoratkaisija
Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis(2008) Salminen, Sampsa - 3D-etäisyyskamerat ja niiden sovellukset
Insinööritieteiden korkeakoulu | Bachelor's thesis(2013-05-13) Mesterton, Nils - 3D-kaupunkimallien muutostulkinta
Insinööritieteiden korkeakoulu | Bachelor's thesis(2020-09-01) Salolahti, Klaara - 3D-kaupunkimallien sovellukset, esimerkkinä kaupunkiympäristön riskienhallinta
Insinööritieteiden korkeakoulu | Bachelor's thesis(2019-09-02) Nurminen, Iris - 3D-kiinteistöjärjestelmä ja sen merkitys kiinteistökehittäjälle- ja sijoittajalle
Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis(2008) Vimpari, Jussi - 3D-kiinteistöjärjestelmän soveltaminen asuinkerrostaloihin Suomessa
Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis(2010) Friström, Siiri - 3D-kiinteistönmuodostus Suomessa
Insinööritieteiden korkeakoulu | Bachelor's thesis(2021-09-05) Vaahteranoksa, Teemu - 3D-laserkeilaus ja sen hyödyntäminen kalliorakentamisessa
Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis(2009) Malmberg, Markus - 3D-mallinnus urheilusovelluksissa
Insinööritieteiden korkeakoulu | Bachelor's thesis(2021-05-06) Tulonen, Benjamin - 3D-mittaustekniikka korjausrakentamisessa
Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis(2008) Ojutkangas, Terhi - 3D-stereoelokuvien tekniikka ja kehitys
Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis(2009) Saukko, Ville - 3D-televisioiden tekniikka
Insinööritieteiden korkeakoulu | Bachelor's thesis(2015-05-04) Nikkonen, Ville