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2643 Uppsatser om Eddy current testing - Sida 10 av 177
Konstruktion och prototypframtagning av pallväxlare
This thesis was conducted at AB Fredr Wagner in Ösmo in Nynäshamn, Sweden.AB Fredr Wagner provides solutions for the graphic industry and has been asked by acustomer to develop a product that can simplify handling of EUR-pallets, namely amechanical arrangement, further called pallet exchanger that can switch from anempty pallet to a fully loaded one using only hand force.The goal with the thesis was to create design documents for a pallet exchanger, andalso from those documents to manufacture a prototype for testing and evaluation.A field trip was made to the customer, IKAB mailing in Huddinge, where the palletexchanger is thought to be placed. The purpose of this field trip was to get an insightinto the current work condition and need of change, as well as to gather informationregarding the requirements when it comes to size and robustness of the palletexchanger. Existing equipment on the market that can perform similar tasks werestudied in order to find an optimal solution for the actual pallet exchanger.After the field trip and gathering of information the concept generating phase began.The method used for generating concepts was brainstorming. To decide on whichconcept to use, a concept selection matrix was created. The selection criteriaincluded in the matrix came from the requirements for the pallet exchanger.
Ansvarsförhållande kring förebyggande materielvård på förbandsnivå inom armén
The change in course recently taken by the Swedish Armed Forces results in an increased use of equipment, and thereby increased requirements of preventive maintenance. This paper aims to examine the current responsibilities for preventive maintenance in an army unit. The intended effect of this examination is to disclose possible flaws, and to help make routines for preventive maintenance more effective.The questions asked in this paper are;Who, in an army unit, is responsible for the routine maintenance?When is this responsibility valid?What demands does the technical service have on responsibilities for the routine maintenance?How are these demands met?How ought to be responsible for the routine maintenance?To answer these questions the author has chosen to use a descriptive method to show the current facts. A theorizing method is chosen to, from described facts, clarify the demands of the technical service on routine maintenance.
Kartläggning och effektivisering av ljuddämparflöde
In 2013 a new emission standard for heavy trucks was introduced and hence a number of new parts was brought in to Scania CV AB. This created a need for modifications in the silencers flow. The flow is highly complex involving several suppliers, call off methods and different models of silencers. The aim for this project was to improve the existing silencers flow. The flow, from supplier to assembling, has therefore been mapped.
Näthinnesjukdomar hos hund :
An array of different retinal disorders is present as a threat in quite a
number of dog breeds. These often lead to profound visual impairment or
blindness. Many of the disorders are genetic, and they are, in Sweden as
well as in other countries, subject to breeding programmes.
The anatomy of the eye and the retina, as well as current examination
techniques (ophthalmoscopy, electroretinography (ERG) and genetic
analysis) are described. The more common retinal disorders encountered
in dogs in Sweden are discussed: retinal dysplasia, generalized
progressive retinal dystrophy, retinal pigment epithelial dystrophy, collie
eye anomaly, sudden acquired retinal degeneration, retinal detachment
and choroiditis. The possibly affected breeds are listed.
The value of diagnostic findings is discussed and current advances on the
subject in ophthalmologic research are accounted for..
Utveckling av nytt koncept för positioneringsslid
A manufacturing machine at the engineering company Sandvik Coromant has a positioning table which task is to move an item linearly. The positioning table has a linear motor capable of high velocity and acceleration. This makes it possible to achieve short cycle times and a more profitable production.The purpose of this thesis is to bring forward a new concept which is more adapted to the requirements of the positioning table. The reason is that the current positioning table provides an unnecessarily positioning accuracy of 0.01 mm, while the requirement for the positioning accuracy is just 0.1 mm. The goal is to reduce manufacturing and component costs.To develop a suitable solution an approach for the concept development process has been performed.
Fashionably fit for the future? ? A demonstrative study unravelling the concept of scenario planning
Purpose: The purpose of this thesis is to clarify and evaluate the concept of scenario planning.Methodology: Our research methodology has a qualitative approach and uses deductive reasoning. The theoretical field of strategy formulation has been reviewed and in specific the concept scenario planning was unravelled and mapped. Thereafter, our model was tested in a case study where the empirical data was collected through personal interviews. Theoretical field: Literature and articles from the strategic management field have been reviewed with a focus on strategy formulation, scenario planning and Williamson?s theory for the creation of a portfolio for strategic options.Empirical base: Personal interviews and secondary sources such as financial reports, articles mainly from industry media and articles found in the databases ELIN and Affärsdata.Analysis: The analysis work constitutes the testing of our model for scenario planning, integrated into Williamson?s portfolio of strategic options for the future.Result: The work has resulted in a clarified model of scenario planning with links to strategic management schools.
Värmestyrning I Handske
This rapport is result of a project. The purpose of which was to design a circuit that is used in a heat glove. The heat glove is the technical aid which provides heat inside a glove.It is specially suited for old people who have problems with cold hands because of decreased blood circulation.There already was an old circuit in the glove that gives a constant current which develops heat from battery to glove through a circuit. The temperature is between 32 and 34 degrees.The problem with the existing circuit was to regulate the temperature. There is only on/off switch and there is no way to adjust desirable value of the temperature.In order to solve the problem the old circuit was investigated.
Val av överlastskydd för elektriska ventilmanöverdon på kärnkraftverket i Forsmark
At nuclear power plants, electrical valve actuators are important for ensuring that the reactor core is water covered and the pressure in the reactor tank and containment is limited. The electrical actuators are provided with overload protection in case of drawing higher current then the motors are rated for. When safety manoeuvres are needed, the overload protection must not trig and cause the valve to stop before completing the manoeuvre. Analyses have showed that the current settings of the overload protection may cause an illegitimate trig at the worst theoretically possible accident. A new method has been developed with conservative assumptions and applies overload protections for all electrical valve actuators at the three reactors in Forsmark..
Tubular polyethylene biogas digesters : development and testing of a biogas technology in Malawi to reduce deforestation and support climate change mitigation and adaptation
The aim of the study was to install a biogas system consisting of three tubular polyethylene biogas
digesters at a rural household in Malawi and to evaluate the constructed biogas system with regards
to relevant system parameters. The purpose was to evaluate if the technology is a possible solution
to reduce deforestation and support Malawi in climate change mitigation and adaptation.
The study was carried out in the southern part of Malawi in cooperation with the University of Malawi. Locally available materials were used to construct and install the system. Three different feed materials, cow, goat and a mix of cow and goat manure, were used in order to determine
which one was best suited to utilise as a digester substrate. After the installation, measurements of
temperature, pH, biogas production, biogas composition and system functionality were made.
The results of the study show that a biogas system with tubular polyethylene biogas digesters can be successfully installed at a rural household and that the most suitable feed material is a mix of cow and goat manure.
Sveriges bostadsmarknad - Befinner vi oss i en prisbubbla?
This bachelor thesis aims to analyse the Swedish mortgage market and investigate whether it is in a current price bubble or not. Comparisons have been made with Denmark, a country with a market similar to Sweden?s, and where the mortgage market faced a price bubble that crashed in 2008. The housing market in Stockholm has been analysed as a separate market, as it differs from Sweden as a whole in prices and underlying factors to increased prices. The conclusion of this thesis is that not Sweden, nor Stockholm, is currently in a price bubble at the mortgage market.
Beskattning av skalbolagstransaktioner : Analys av skalbolagsreglerna ur ett tillämpnings- och rättssäkerhetsperspektiv
Shell companies are characterized by containing liquid assets such as cash, securities or other similar assets. Transactions of shell companies constitutes a severe problem since the purchaser often has the aim of obtaining undue tax advantages by not paying the tax debt of the company.Historically it has been complicated for the legislator to stop the set-up in an efficient way since the transactions as such are not illegal, instead rather commonly used for example to restructure companies or for the transfer of companies to the younger generation. The purpose of the current legislation is to prevent individuals and corporations to involve in shell company trade. Aiming for an efficient legislation, the tax rate is at a very high level.The issue with the rules is that also honest buyers are at risk of being covered. This calls for high demands in complying with the principle of legal certainty and the possibility to forecast the tax consequences.The purpose of the thesis is to identify and analyze eventual problems when applying the legislation.
Strömkontroll till aktiva magnetlager med noggrann och störningsreducerad strömmätning
There is always a need for more effective ways to store energy in order to reduce the human impact on the environment. One step on the way can be the use of flywheels as kinetic energy storage devices. Low frictional losses are essential for a flywheel to be effective. To minimize these losses active magnetic bearings (AMB) can be used to keep the shaft centered instead of the more conventional ball-bearings. AMBs use actuators and a fast control system that needs correct and noise-free measurement data of the shaft position and the current in the actuators to work properly.This thesis explains the process of constructing power electronics and a current measurement system for active magnetic bearings (AMB).
Blockbaserad provning : Utveckling av en ny testrigg för utloppsmodulen
Alfa Laval?s strategy is to focus on modularized product platforms. Several benefits areforeseen, reduced lead-time, less costs, shorter Time To Market and better quality.Development and verifying will be carried out on block level. Today the separators arebeing tested as a complete unit. A number of factors affect the test results and problemsthat are encountered can be hard to identify.
Klassiska konflikter i en ny debatt - Analys av idéerna i debatten kring bildandet av ett feministiskt parti i form av Feministiskt initiativ
Every now and then new political ideas appear which creates debate. A current example of political debate is the one which concerns the creation of a feminist political party in Sweden -Feministiskt initiativ. Apparent in the current debate is that there are two existing conflicts of ideas present. The liberal thought of politics of ideas stands against feminism's demand for presence in the political life. And the other, the conflict which concerns the question of where a line between the public and the private spheres should be drawn.
Undersökning och framtagning av ett moduluppbyggt datainsamlingssystem
This report is about a thesis that is performed in and for SYSteam Engineering AB in Motala. The thesis work is divided into three parts, study of the market, programming and electronics. The study part consists of examining and comparing different data acquisition systems for testing of different circuit boards, taking into account the modularity, real-time applications, mobility, environmental, interface hardware and software, to be able to define a general module-based data acquisition system in both hardware and software that enables for future developments.The programming part consists of getting started with Visual Studio, which integrates the Measurement Studio for C#. NET. Measurement Studio includes classes and user controls for testing and measuring and offers tools for acquisition, analysis and presentation of real world data.