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58 Uppsatser om Helical screw expander - Sida 4 av 4

Wobblerpump

The task was to design and manufacture a submersible displacement pump working with the wobble plate principle. The main task for the Wobble plate pump is to be used as a sewage pump for smaller households or dewatering pump in environments where small flows and high pressures are acquired. For these purposes ITT Flygt sell a screw pump, PC-Grinder 3068. The hydraulic part of the PC-Grinder is manufactured by a subcontractor. Therefore ITT Flygt wants to evaluate an alternative to their screwpump PC-Grinder, which can be entirely manufactured by them self.

Viral Facebook integration i mobilspelet Gravel

This thesis has treated a three-axis robot which task is to serve a larger test machine tomove the modules to be tested, from the storage to the test site. The robot is composed ofthree linear actuators; two standard components of ball screw type and a custom-builtactuator of trapezoidal type. The work has mainly focused on the custom-built device to seeif it could be replaced with a standard component. Part of the work has been to look into thepicking tool and to see if there are any possibilities to improve its function.The report presents two different proposals which I decided to call Robot 1 and Robot 2 andthey aim to address the problems arising in the purpose-built linear unit and the X-axislinearity problems. Robot 1 focuses on eliminating the problems that arise around therobot's X-axis, with such simple means as possible and without making excessive materialchanges.

Limträstomme till hallbyggnader : Utformning och dimensionering av momentstyva ramhörn och 3D-modell framtagning

Industrial buildings are increasing all over Sweden. Farmers are building new modern facilities and the government chooses to build new halls to invest i youth sports. Glulam is the most common framework but there are limitations because of the transport. Therefore, there is a need to develop new solutions to increase the use of glulam.The maximum torque in the eaves was found in the frame with a roof pitch of 18 degrees and a wingspan of 25 meters. Using hand calculations according to Eurocode and comparison with the computer software StatCon, the maximum torque, shear force and utilization rate is calculated.

Mening ? minne:glömska : En läsning av Birgitta Trotzigs Dykungens dotter

Dag Wellander: Meaning ? memory: oblivion. A reading of Birgitta Trotzig?s The mud kings daughter. Master of Arts paper.

The rabbit as an animal model in dental implant research : with special reference to bone augmenting materials

Dental implants that are integrated into the jaw bones are widely used to replace lost teeth in human beings. Tooth-loss is often related to loss of the surrounding alveolar bone. This can make implant placement difficult and a bone substituting material may be required. The standard method is to use a bone graft harvested from the patient which requires additional surgery than that needed for implant placement. Limitations in the amount of bone that can be harvested also pose a problem.

Objektiv utvärdering av hälta under ryttare

Background: The most common reason for veterinary care in horses is lameness. Lameness in riding horses is often difficult to evaluate and in many cases may require riding to come to a diagnosis. Evaluation of lameness has proven to be very subjective and depends on the examiner. There is a need to evaluate ridden horses in an objective way.

Framtagning av beräkningshjälpmedel för tvärkraftbelastade förband med förbindare av metall.

The governing set of regulations for structural engineering in Sweden used to be Boverket, BKR. However in the beginning of the 21st century a changeover to new regulations, the Eurocodes, started.The transition was completed in year 2011 when the Eurocodes became the mandatory design work policy for all countries within the European Union. The Eurocodes were implemented to simplify and remove potential barriers to trade that may exist when countries have different design rules.  Since the changeover it has been important for all construction companies to update their knowledge base and their design software.When comparing the two calculation processes they seem similar, but there are a couple of differences worth noting.  With the new regulations, engineers will find that the process when designing joints in timber structures has changed.  What used to be a fairly easy and straight forward calculation procedure has now become tedious and time consuming.The objective of this degree project is to present a product, a dimensioning tool that will help structural engineers when computing lateral load carrying joints in timber structures.The degree project is made up of two parts where the first part is the written report describing the background and theory behind load carrying computations. The second part of the project is the actual dimensioning tool which includes several worksheets in Microsoft Excel. The program treats single and double shear connections of the following:Nail jointsScrew jointsSteel plates (thick and thin types) The user can edit the following parameters:Type of plate/ number of shearsStrength class of timber membersMember and plate sizeType of fastenerDiameter of fastenerLength of fastenerYield moment of fastenerkmod and partial factors for design load carrying capacityThe dimensioning tool was created and developed in collaboration with structural engineers at the company Byggteknik AB.

Reglering av turbins ledskenor i vattenkraftverkmed hjälp av elektriska ställdon

Hydropower is the largest renewable energy source available in today's society. Operation and production is handled by high-tech electronics. This thesis is done on behalf of Statkraft Sweden AB who wants to explore the possibility of replacing the hydraulic cylinder with an electric actuator, generally as well as a case of a small power station on the river Nissan. Whether it is the chaplain or francis turbine vanes are actuated by hydraulic cylinders. Because of Gustavsberg hydropower is inconstant operation, this report is based on power calculations, which are read and computed according to the available hydraulic diagram.

Bruksanvisning eller Screw it do it : Elitkortet när dröm ska bli verklighet

Tjejer/damer har i regel sämre ekonomiska förutsättningar i jämförelse med killar/herrar när det gäller idrott, något vi själva har upplevt då vi har varit aktiva på hög nivå en längre tid. Angelica Lorsell berättade för oss om en företagsidé, som skulle kunna gynna elitidrottande tjejer. Idén går ut på att förmedla ett medlemskort, "Elitkortet", där olika samarbetspartners erbjuder målgruppsinriktade rabatter som skulle underlätta vardagen för elitidrottande tjejer. Angelica bad oss om synpunkter och hjälp för att lyckas genomföra denna affärsidé.Vårt syfte med uppsatsen är att ställa drömmen om att starta företagsverksamheten Elitkortet mot vad som krävs av oss som företagare för att förverkliga detta, dröm ställs mot vardag.Litteraturen beskriver vissa personlighetsdrag som en entreprenör bör ha för att lyckas: prestationsbehov, riskbenägenhet och kontrollbehov. Att skriva ner sin affärsidé beskriver teorierna som viktigt för att lättare sätta upp mål att sträva efter.

Inventering av förorenad mark på LKAB's industriområden i Kiruna, Svappavaara och Malmberget

The county administration asked LKAB to make an inventory of possibly contaminated sites caused by their mining activity. The inventory should be performed according to the MIFO model, a method from SEPA which is used to assess a contaminated site. The first phase involves collection of information through interviews and site inspections and in phase 2 a general survey with field sampling is conducted.LKAB started the work with the first phase of the survey during 2003. During this project the information collected in Phase 1 was evaluated and 16 of the sites were chosen to proceed to MIFO Phase 2 (six sites in Kiruna, and 5 sites respectively in Svappavaara and Malmberget). The sampling of these 16 sites was performed during week 27 2004.

Inventering av förorenad mark på LKAB´s industriområden i Kiruna, Svappavaara och Malmberget :

The county administration asked LKAB to make an inventory of possibly contaminated sites caused by their mining activity. The inventory should be performed according to the MIFO model, a method from SEPA which is used to assess a contaminated site. The first phase involves collection of information through interviews and site inspections and in phase 2 a general survey with field sampling is conducted. LKAB started the work with the first phase of the survey during 2003. During this project the information collected in Phase 1 was evaluated and 16 of the sites were chosen to proceed to MIFO Phase 2 (six sites in Kiruna, and 5 sites respectively in Svappavaara and Malmberget). The sampling of these 16 sites was performed during week 27 2004.

Tillståndsbaserat underhåll på verktygsmaskiner : Utvärdering av det tillståndsbaserade underhållet på verktygsmaskiner hos Volvo Cars i Skövde och hur det kan utvecklas

Företag kan använda sig av olika strategier för underhåll. Det kan vara avhjälpande underhåll som utförs först när ett fel uppkommer eller förebyggande underhåll. Ofta används en kombination av båda. Det förebyggande underhållet kan vara förutbestämt eller tillståndsbaserat. Fördelar med att använda sig av tillståndsbaserat underhåll är exempelvis att utbyte av enheter inte behöver ske i onödan utan först när en observation visar att ett fel är på väg att ske.

Sourcing of low-tech omponents in high-tech environments

Problemställning: Low tech-komponenter anses enligt teoretiska rekommendationer ofta som icke kritiska. Dock har de egenskaper som en gång ansågs synnerligen low tech förmodligen förändrats och blivit mer komplexa i takt med att underliggande krav inom high tech-miljöer har ökat. Det är befogat att diskutera och kanske omdefiniera de eventuellt senare omprioriterade komponenterna, vilka i aggregerad form representerar en produkt på systemnivå. Hur borde processen för den eventuella omprioriteringen genomföras och vilka krav kommer att påverka företaget? Den ökade komplexiteten kring produktegenskaperna kan också innebära att leverantörer försöker bli unika, vilket implicit påverkar Sony Ericsson.

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