I mitt examensarbete undersöker jag den fristående kiosken som byggnad, kioskens historia i Stockholm och hur den ser ut i Stockholms innerstad idag. Kiosken är en byggnad som besitter en stor potential både som plats i staden och som fristående byggnad med ofta väl exponerade fasader i alla väderstreck och placerade så att många människor passerar dem. I mitt arbete  undersöker jag denna viktiga plats och tittar på hur byggnaden kan ta tillvara  den potential som den besitter. Genom att kartlägga stadens kiosker, dess material, utformningar och påfrestningar så har jag skapat mig en bild av det som är en kiosk i Stockholm idag. Stockholms stad har höga tankar om stadens kiosker och anser bland annat att dom bör främja innovation, något som inte speglas i verkligheten.   Genom mitt undersökande så har jag kommit fram till att framtidens kiosk behöver en ny typ av arkitektur, en som klarar av snabba omställningar, ombyggnader, nya menyer samtidigt som den bör visa på nytänkande. Stora krav på en liten byggnad. Det har lett mig till att undersöka 3d-printerns teknik i stor skala. En teknik som möjliggör de ovannämnda kraven som jag anser att vi kan ställa på en kiosk. Genom att designa moduler som kan bytas ut och malas ner igen så kan kiosken skapa sitt eget kretslopp av arkitektur.  I mitt designförslag så har jag formgivit en kiosk med arkitektoniska element som känns bekanta och lätta att ta till sig. Genom att ta tillvara på möjligheten som kiosken ger med sitt fria uttryck så har jag laborerat med 3d-print i stor skala. Genom att designa med nya, hållbara material, applicerat på en design som man lätt kan ta till sig, så hoppas jag kunna vända blickarna mot kiosken som byggnadskategori och dess möjlighet som plattform för nya ideér.

La moda se mantiene en un cambio constante debido al entorno. Cada temporada los diseñadores crean colecciones y proponen nuevas tendencias que buscan responder las exigencias del público. A lo largo de los años, se ha notado un incremento significativo en el uso de la tecnología por parte de las personas. Es por ello que las nuevas tecnologías se han comenzado a fusionar con el indumento tradicional. En los últimos años, los diseñadores están cada vez más dispuestos a optar por este tipo de técnicas en sus colecciones. Pese a esto, aún se desconoce cómo es que la impresión 3D ha impactado en la industria de la moda en nuestro país. Por consiguiente, la presente investigación tiene como fin responder la siguiente pregunta: ¿Cuál es el impacto de la impresión 3D en la moda en Lima entre el 2016 y 2020? Para resolverlo, se debe conocer el desarrollo de esta tecnología y su definición de manera detallada. De igual manera, se busca describir cómo se aplica la impresión 3D en la moda en Lima. Para ello, se entrevistarán a 8 diseñadores peruanos que han realizado colecciones de moda utilizando esta tecnología. Para esta investigación se utilizará el método cualitativo con enfoque fenomenológico. Dicha información se obtendrá mediante entrevistas semiestructuradas con preguntas abiertas. Cabe mencionar que la presente investigación aportará un punto de partida como fuente de estudio para diversos proyectos académicos. / Fashion is constantly changing due to the environment. Each season designers create collections and propose new trends that seek to meet the demands of the public. Over the years, there has been a significant increase in the use of technology by people. That is why new technologies have begun to merge with traditional clothing. In recent years, designers are increasingly willing to opt for this type of technique in their collections. Despite this, it is still unknown how 3D printing has impacted the fashion industry in our country. Therefore, this research aims to answer the following question: What is the impact of 3D printing on fashion in Lima between 2016 and 2020? To solve it, you must know the development of this technology and its definition in detail. In the same way, it seeks to describe how 3D printing is applied in fashion in Lima. To do this, 8 Peruvian designers who have made fashion collections using this technology will be interviewed. For this research, the qualitative method with a phenomenological approach will be used. This information will be obtained through semi-structured interviews with open questions. It is worth mentioning that this research will provide a starting point as a source of study for various academic projects.

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Additively manufactured carbon fiber reinforced polymers (CFRP) are vastly studied for their remarkable mechanical properties compared to most other 3D printed materials. Different methods were employed to further increase mechanical performance of CFRP 3D printed parts. The objective of the study is to investigate the effect of autoclave postprocessing on the interlaminar shear behavior between 3D printed CFRP layers. 3D printed CFRP samples were processed with nine combinations of temperature and vacuum in an autoclave. Short beam shear (SBS) tests were performed to characterize the interlaminar shear strength (ILSS) of the samples after autoclave processing. Digital image correlation (DIC) was utilized to quantify the strain and failure mode of the samples during SBS tests. From SBS mechanical tests, the curing temperature and vacuum of 170 C and -90 kPa produced samples with the highest ILSS, 39 MPa, a 46% improvement compared to uncured samples. The observed failure modes were fracture and delamination. Little work in additive manufacturing has applied autoclave as a post-process procedure. This study aims to explore this technique and establish its viability in improving mechanical performance of 3D printed fiber-reinforced parts.

OBJECTIVES: This in vitro study aims to compare and evaluate the mechanical properties of different 3D-printed resin materials. Determine the impact of 3D printer type on the mechanical properties. Investigate the filler percentage by weight for each resin material. MATERIALS AND METHODS: Eight resin materials were tested for flexural strength, flexural modulus, microhardness, fracture toughness, and wear resistance. Resin materials: Rodin Sculpture (RS), BEGO VarseoSmile Crown Plus (BVS), Desktop Health Flexcera Smile Ultra Plus (DHF), SprintRay Crown (SRC), SprintRay Ceramic Crown (SCC), Saremco Crowntec (SC), Myerson Trusana (MT), PacDent Ceramic Nanohybrid (PAC). 3D printer Asiga Max and Ackuretta SOL were used to print 12 specimens from each material to compare three-point flexural strength in bar-shape, biaxial flexural strength in disc-shape, fracture toughness in single edge V-notched beam, wear resistance in pin-shape. Three discs shape specimens from each material were used to compare the Vickers microhardness. The filler percentage by weight of each material is determined by Ash burning and Solvent extraction. The microstructure of a polished disc from each material was examined under a scanning electron microscope (SEM), and the elemental composition was investigated by Energy Dispersive Spectrometry (EDS). Results were analyzed using ANOVA, regression of least square means (α = 0.05), Tukey HSD test, Pearson correlation coefficient, and Student’s t-test. RESULTS: The flexural strength test results, utilizing the three-point method, reveal significant differences among the materials tested. The highest average was recorded in SCC at 160 MPa, while the lowest was found in SRC at 84.4 MPa. The flexural modulus also exhibited significant differences, with the highest average observed in SCC, BVS, RS, SRC, DHF, SC, and MT, measuring 7.8, 6.2, 6.0, 5.8, 4.9, 4.5, and 3.0 GPa, respectively. The resin materials with the highest biaxial flexural strength were DHF 217 MPa and MT 200 MPa, with no significant distinction between them and different from the remaining materials. SCC demonstrated a notably higher average value in Vickers microhardness 44 HVN, while DHF exhibited a significantly lower value of 15.58. The Fracture toughness test presented no significant differences between DHF, MT, and SCC, with values of 2.28, 2.27, and 2.11 MPa.m0.5, respectively, exceeding the remaining materials. In the wear test, DHF and MT had a significantly higher weight loss rate of 29.25 and 27.18 mg/million cycle, respectively. In contrast, MT's height loss rate of 2.02 mm/million cycle was the only significantly higher difference from other materials. The data indicates that the printer type does not significantly affect biaxial flexural strength. At the same time, Asiga exhibited significantly higher values in three-point flexural strength, flexural modulus and hardness tests. In contrast, the SOL printer demonstrated higher values in fracture toughness than Asiga. The ash and solvent extraction methods revealed that SCC had the highest filler percentage by weight, while MT had the lowest. SEM imaging showed the existence of filler particles in all materials, with PAC containing the largest particles and MT containing the smallest. DHF was the only resin material that contained exclusively spherical shape filler particles. EDS analysis disclosed the elemental composition of each material with a higher percentage in Silica, Oxygen, Barium, Titanium, and Ytterbium. CONCLUSION: The results demonstrate significant differences in the tested materials' flexural strength, flexural modulus, biaxial flexural strength, Vickers microhardness, fracture toughness, and wear rates. Even though there are significant differences in some of the mechanical properties of the printer type, it is small and might not have an effect clinically. A strong correlation exists between filler percentage with flexural modulus r = 0.83, biaxial flexural strength r = 0.60, microhardness r = 0.73, and wear resistance r= 0.82. There is a low correlation between filler percentage with fracture toughness r= 0.41, with no correlation with flexural strength in the three-point test. Filler particle percentage highly affects the mechanical properties of 3D printed resin materials. These findings could be valuable in selecting appropriate materials for specific applications.

The growing threat of antimicrobial resistance is among the largest concerns in the world today. One method under development to combat this issue is the encapsulation of microbes in microfluidic droplets for single-cell testing. This method may be able to circumvent the need for a traditional positive cell culture which consumes the majority of the testing time using current diagnostic methods. This dissertation presents a method by which to deterministically encapsulate microbes using an artificial intelligence object detection algorithm and a Droplet-On-Demand microfluidic device. To accomplish this, the Droplet-On-Demand microfluidic device was first developed using a unique 3D-printing manufacturing method. An annular Channel-in-Channel droplet generator was developed which produced droplets within the hydrophobic 3D-printed polymeric microfluidic device. Supporting microfluidic unit operations were also developed including pumps, a 3-way flow-thru valve, and a detection window used for visualizing microfluidic particles. Control software was developed using python which controlled pneumatically-actuated membranes within the microfluidic device, the imaging system, and the object detection algorithm. 20-μm and 2-μm test particles were used as non-biological test particles while red blood cells and fluorescent E.coli baceria were used as biological test particles. All test particles were identified and encapsulated and show the flexibility of the system overall and the ability to identify a variety of particles of interest in microfluidic systems. Growth tests were conducted using E.coli bacteria encapsulated within microfluidic droplets with a fluorescent metabolic indicator. The fluorescence of droplets containing actively growing encapsulated bacteria was quantified using a unique first-principles model paired with an image processing protocol to provide relative concentration data to quantify the growth of the E.coli over time. These growth results indicated that bacterial growth in droplets could be detected and quickly quantified in 4 hours and thus provide practical results to clinicians on the susceptibility of bacteria to an antibiotic. This Droplet-On-Demand technology has the capability of providing clinically applicable data from the most basic and fundamental biological source, an individual cell; and that can be done with low concentrations and on any cell that can be visually identified.

This seminar thesis deals with the issue of 3D printing in companies. The aim was to describe additive manufacturing and 3D printing technologies. Moreover, to select the most common materials which are used and describe them. It was also necessary to perform a study of mechanical stresses and prepare a detailed description of the mechanical properties of materials. From these data, methods of use in the automotive industry were described. The most important part was to introduce case studies and create a description of which 3D printing technologies have the fastest return on investment.

Den här rapporten handlar om ett maskintekniskt konstruktionsprojekt som framtagits av Christian Wikman och Oliver Öhman. Det är ett uppdrag som givits av EcoistVehicleTM för att slutföra högskoleingenjörsexamen inom maskinteknik vid Högskolan i Halmstad. Princip- och Primärkonstruktion (Olsson, 1995), Fundamentals of Vehicle Dynamics (Gillespie, 1992) och en stor mängd egen sökning har använts som grund till metoden som använts under projektets gång.   EcoistVehicleTM är ett fordonsprojekt som startats av Thomas Koch. Det är en eldriven, singelsits och trehjulig bil med ett drivande bakhjul. Idén bakom bilen är att transportera föraren till sin destination på ett miljövänligt sätt. Bilen är lämpad till landsbygd och pendling med en räckvidd på 40-50km. Syftet med uppdraget som gavs våren 2017 var att hitta snabbare metoder att konstruera och tillverka en svingarm till fordonet.   Uppdraget som gavs var att konstruera och möjligtvis tillverka en svingarm för det drivande bakhjulet som skall passa in på bilens dimensioner samt ha en relativt snabb tillverkningsprocess för en produktionsserie på 10-20 bilar. Uppdragsgivarens önskemål var att 3D-printa ut de större delarna av svingarmen och sedan efterbearbeta monteringsdelar och passytor med fräsning. Flera tillverkningsprocesser som används inom fordonsindustrin för framtagning av motorcykelsvingarmar har setts över och jämföras för att få fram den metod som passar detta projekt.   Det som författarna bidragit med till projeketet är en högre kunskap om 3D-printning av metall, då specifikt aluminium, olika koncept för tillverkning samt analyser av konstruktionen för att testa hållfasthet till den slutgiltiga produkten. / This report will be about a mechanical design project that has been developed by Christian Wikman and Oliver Öhman. The assignment was given by EcoistVehicleTM to complete a bachelor’s degree in mechanical engineering at Halmstad University. Princip- och Primärkonstruktion (Olsson, 1995), Fundamentals of Vehicle Dynamics (Gillespie, 1992) and a large amount of research on the web has been used as the foundation for the method that’s been used all through this project.   EcoistVehicleTM is a vehicle project started by Thomas Koch. It is an electrically powered, single seat, three wheeled vehicle that's driven by a single rear wheel. The idea behind the car is to transport the driver to his destination in an environmentally friendly way. The car is suited for commuting in the countryside with a range of 40-50km. The purpose of the assignment that was given in the spring of 2017 was to look into faster methods of designing and manufacturing a swingarm for the vehicle.   Our assignment was to design and possibly manufacture a swingarm for the driving rear wheel that should fit the specifications of the car and have a relatively fast manufacturing process for a series of 10-20 cars. Our mentor and taskmaster has a request to 3D-print the larger parts of the swingarm then after work the mounting surfaces and mating surfaces with milling. Several manufacturing processes used in the automotive industry for the production of motorcycle swingarms will be screened and compared to get the method that will fit this project.   The authors have contributed with a higher knowledge of 3D-printing, specifically aluminum, different design concepts together with analysis of the design to test the solidity of the final product.

The topic of diploma thesis are surface heat treatments after 3D print by method Fused Deposition Modeling. In the introduction is located recherche of the given issue. Further, we describe the construction and process of the 3D printer construction, on which will be printed samples for experiments in the next part of the thesis. The aim is to determine the behavior and changes of surface structures of heat-affected samples from different materials. Furthermore, the suitability of the used methods and the possibility of their use in practice.