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2759 Uppsatser om Construction materials - Sida 52 av 184
Ett kandidatexamensarbete inom lättviktskonstruktioner .
Due to recent legal enactments regarding carbon dioxide emissions, the car industry is facing higher demands. An effective way of reducing these emissions is to minimize the weight of the vehicle. This thesis constitutes a feasibility study on whether or not it is applicable for the car industry to utilize an inner floor structure comprising composite materials. The principal was the projectSåNätt, in which the main participant was Volvo Cars Corp. In consultation with a reference group, consisting of delegates from the industry and KTH, a specification of requirements was produced.
Laserskärning i Sverige : ? tekniken, marknaden och hur de utvecklas
Laser for material processing possesses a number of advantages which mean that it has been and will be an important component for a wide range of industries' future development. Cutting materials processing is the dominant use of laser technology and has revolutionized the manufacturing industry. The aim of this thesis is to describe the principles of metal cutting by laser, how laser cutting is applied in practice and to identify how Swedish companies are using laser cutting. For the theoretical and technical description of laser cutting literature studies are the primary source of information. The empirical basis for the mapping of the Swedish industry for laser cutting is grounded on a survey; this includes Swedish companies that use laser cutting in their production.
Lärdom och fostran : En vägledning till skolarkiven på landsarkivet i Uppsala
The Regional State Archive in Uppsala [Landsarkivet i Uppsala] has several archives left from various types of educational institutions in the counties of Dalarna, Södermanland, Uppsala, Västmanland and Örebro. This archiv-al guide reveals the main content of some of the school archives. It goes through the archives of the elementary school, state secondary grammar schools and private secondary grammar schools. A few special schools for the blind and the deaf children are included. The essay also brings up records from community homes and reformato-ries for children and young adults who experienced certain difficulties and therefore could not adjust to the ordi-nary educational system.
Framtagning av en rörväxlaretill sopsugsystem
The main goal of this project was to develop some sort of a diverter for pipestransporting waste in a vacuum system. This unit was supposed to be both cheap andeasy to serve/exchange worn out parts. With a limited space to install the pipeexchanger, the challenge was to keep it as compact as possible without constructingbends with to small radius or to sharp angles as this would wear out the system a lotfaster than planned. The system was also supposed to be able to handle clothes andscrubs from hospitals. Having too much sharp edges or angles would tear the clothesapart.
Förlustsänkning i drivlina : En simuleringsmodell av hjulaxel till anläggningsmaskiner
Med ökad fokus på miljöpåverkan och bränsleekonomi vill Volvo Construction Equipment öka verkningsgraden på sina anläggningsmaskiner. På avdelningen för drivlineutveckling jobbar man bland annat med att sänka förlusterna i växellåda och hjulaxel på hjullastare och dumper. För att underlätta detta arbete har en simuleringsmodell som beskriver förluster i hjulaxlar tagits fram. Denna rapport beskriver framtagning av modellen, verifiering av modellen och vilka framtida användningsområden modellen lämpar sig för.Simuleringsmodellen är uppbyggd av ett antal komponentmodeller. Komponentmodellerna innehåller formler för respektive komponent i hjulaxeln.
Hackelselängden beroende av skördemetod :
The conditions for a good silage process start with good wheather and choice of crop, then choice of harvesting machinery. The shorter and more mechanically treated crop, the better quality of the forage. (Pauly 1994). This study has examined the variations in chopping length depending on harvest method. Precision choppers works with a rotating chopping cylinder, where the crop is cut into pieces.
Analys av miljömedvetenhet under produktionsprocessen
NCC Construction är en del av NCC koncernen och är ett av de största byggföretagen i Sverige idag. Detta examensarbete är utfört i samarbete med NCC Construction i Karlstad och behandlar ämnet miljömedvetenhet. Uppgiften var att studera och analysera de anställda med hänsyn till deras miljöpolicy samt att uppskatta hur väl företaget når ut med sin information, samt att ta fram olika förslag på förbättringar i NCCs pågående miljöarbete.NCCs miljöpolicy har fyra övergripande mål och det finns klart och tydligt nerskrivet vad den anställde är skyldig att bidra med i sitt arbete med hänsyn till företagets strävan mot en bättre miljö. Behovet av en väl formulerad miljöpolicy är väsentligt då det är denna som beskriver vilka mål som finns och hur dessa ska uppnås.För att få fram svar på min frågeställning utfördes en enkätundersökning där arbetsledning, byggnadsarbetare samt underentreprenörer var målgruppen. Denna undersökning var anonym och analyserades med hänsyn till position, ålder och antal år i företaget.Resultatet i denna undersökning visar på stor förståelse hos de anställda inför miljöfrågor.
Gåpall : Ett produktkoncept
This master thesis has been a product realization process. Having BRIO:s walking cart as thestaring point the purpose was to further develop the principle of such products and at the sametime broaden their sector of use. The final result is to be regarded as a complete solutionmeant as a foundation for further development at the BRIO Company. The product aims tosatisfy the demands and needs of the target group called theon the go parent. Trends, qualityand purchase power are features that characterize this particular target group.The project resulted in a walking stool namedBRIO Circus after its source of inspiration.
Kvaliteter i bostaden och dess närmiljö, En utvärdering av ett byggnadsprojekt
AbstractThis report has been developed in cooperation with Peab Region Bostad Göteborg, mentor at Krook& Tjäder (through Chalmers), and examiner at Chalmers University of Technology. The report is the result of a research of a building project, constructed by Peab. The report is investigating and it means to identify and evaluate qualities in the dwelling and its surroundings. Its purpose is to evaluate how the residents in a chosen housing cooperative enjoy living there. It shall, with help of chosen quality aspects, identify what expectations the residents had before moving in, how they experience the dwelling and its surroundings today, and what hopes they have for the future planning of the area.
Metodik för fastställande av bärförmåga på befintliga betongkonstruktioner
Many buildings are now nearing the end of their service life. This applies to both the older houses from the 40's and 50's to the million project houses that did not prove to be as sustainable in the long run. Often there is a desire to extend the service lifetime, but to do that you need to make detailed inspections. The Folkets hus in Gävle is one of those buildings that is in need of renovation and to fulfill the new requirements that must be met in today's buildings. It is desired to make the buildings rentable space more attractive and to extend the building with two more floors.
Target Costing i produktutvecklingsprocessen : En studie på Volvo Construction Equipment i Braås
Bakgrund: Produktutvecklingsprocessen har på senare tid kommit att ses som en strategisk aktivitet som är avgörande för företagets överlevnad eftersom produktens utförande och kostnader till stor del fastställs innan tillverkning påbörjas. ?Target Costing? har sitt ursprung från Toyota i Japan och är en metod för strategisk kostnadsstyrning som har vuxit fram för att tidigt styra kostnader. Metoden används för att integrera kostnadsstyrning i produktutvecklingsprocessen i samstämmighet med kundkrav och företagets egna vinstkrav.Syfte: Syftet med studien är att beskriva och analysera hur ?Target Costing? används i produktutvecklingsprocessen på Volvo Construction Equipment i Braås för att ge kunskap till nya potentiella användare.
Satsa på leken! : en studie om skolgårdens betydelse för barns lek och utveckling
The intention of this final thesis is to examine how to create a schoolyard that inspires children at the age of 6 ? 12 years to play and give them possibility to develop. To get a lot of knowledge in this subject, I have combined studies of literature with practical studies at Hosjöskolan in Falun. During my practical studies I have done interviews, walks in the area with the children and visited other schoolyards. I have based a design proposal for the schoolyard of Hosjöskolan on these studies.
Ebbas klänning Uppmätning och analys som källa till information i kombination med historisk undersökning
This study focuses on costume as a source of information. By making a case study of an 1880's dress itaims to explore the conservators potential as an investigator and conveyor of the information containedin a costume. Further explanation of this role is made by reference to several statements made by wellknown textile conservators. The paper also explores the different words used to make a new version ofa preserved or inexistant garment, gives an extensive presentation of taking patterns and an insight tothe other methods used for analysing costumes. The case study consists of an investigation of the dressconstruction, during which a pattern is taken, and a literature study of the contemporary fashion, theowner of the dress and the maker of the dress.
Passivhus, detaljutformning och dess köldbryggor
Along with rising energy prices and increasing awareness of environmental issues, the criteria for buildings energy performance have been sharpened through the years. Today, ?passive house? and ?low energy house? are commonly used phrases in the construction industry and is expected to become increasingly common in the future.For houses with well-insulated building envelope the importance of well constructed details increases when minimizing the heat losses. Examples of these details are floor-wall junction and window openings in the wall. In such connections thermal bridges occur, which means that heat more easily is transported out of the building, compared to the rest of the building envelope.This report deals with detail solutions around windows and a comparison between a traditional slab and a foundation from Koljern consisting of foam glass.
Försöksmetod för automatisering av kvalitetssäkring av SKB
Within all industries, there is a change in working time required; this also includes the construction sector. However, the way construction sectors are differentiated is by not having been given the opportunity to be practiced or tested. The aim of this thesis that we have done in collaboration with the Concrete Industry was to investigate the possibility of developing an automated method for quality assurance of SKB at the site. The idea is to make the O-funnel to be more utilized and therefore ensuring that the appropriate concrete quality is provided which eventually would lead to a better development in the production process.The project has involved theoretical work and laboratory experiments. The theoretical work gave us a good foundation at the beginning of the project. After gathering the information and material, the laboratory experiments began by SCC in their laboratory in Hammarby. The collected data from the various laboratory tests formed the foundation for trying to relate measurements for consistency of SCC with each other and therefore find out how measurements from O-funnel varies with different concrete mixtures.