This master thesis is commissioned by Permobil AB. The report describes thoroughly the developing process of an adjustable backrest for wheelchairs. The target group for the backrest are people that suffer from scoliosis or other spinal diseases. Because of insufficient pressure distribution usage of traditional backrests is not an option for them.The current solution has got a frame that is made by several adjustable links that is held in place by friction. Between the links velcro tapes are attached that is adjusts the depth.

Volvo Cars in Skövde manufacture and assemble Volvo engines. When attaching the ignition coil to all 4-cylinder engines, a special mounting tool is required. This mounting tool is currently manufactured from injection-molded polyoxymethylene (POM), a thermoplastic. It has been noted that the life span of the tool is shortened as a result of abrasive wear that occurs during the attachment process of the ignition coil.An investigation of the possibility of manufacturing the mounting tool with a 3D-printer is undertaken in cooperation with ÅF, a consultant to Volvo Cars. A literature study is first presented to introduce broader knowledge on the subject.

Phosphate is a used as a surface treatment method which is used for various purposes in the industry. In this case, phosphate coated wire is used in the processes to achieve a desirable outcome. The reason to why phosphate coated wire is used in the production process is because phosphate acts as an accumulator, where it stabilizes the lubricant on the surface of the wire. Lubrication is important because it plays a major role in the roll quality and characterizes important benefits regarding the outcome.Currently, SKF has to wash away all phosphates residues after extrusion process in an operation called tumbling. The main reason for this is simply because the surface has to be completely free from lubricants and coatings till the next step of process.

SammanfattningSyfte och frågeställningarSyftet är att undersöka två skolors friskvårdsarbete, samt om det är möjligt att jämföra personalens upplevda hälsa med ledningens syn på personalens hälsa.För att ta reda på detta syfte har vi formulerat följande frågeställningar:På vilket sätt jobbar skolorna med friskvård?Vad har skolorna för mål med friskvårdsarbetet?Hur ser ledningen på personalens upplevda hälsa?Hur ofta deltar personalen i friskvårdsarbetet?Hur upplever personalen sin hälsa?Hur upplever personalen skolans friskvårdsarbete?MetodVi har valt att använda oss av både en kvalitativ och en kvantitativ undersökning i vårt examensarbete. Anledningen till att vi valt att använda oss av både intervjuer och enkäter är att vi dels vill få en djupare förståelse för ledningens syn på friskvården, samt en bredare syn på personalens upplevda hälsa och deras inställning till skolans friskvård. Vi intervjuade två biträdande rektorer och delade totalt ut 143 enkäter på de båda skolorna och vi fick en svarsfrekvens på 48.9 procent dvs. 70 stycken enkäter.ResultatDet resultatet visade var att skolorna erbjuder friskvårdsaktiviteter och en friskvårdstimme varje vecka men det är endast ett fåtal som utnyttjar respektive deltar i dessa möjligheter.Personalens upplevda hälsa var generellt god, förutom att det var höga siffror som visade att många hade långvarig värk i såväl axlar som nacke/rygg.

Phosphate is a used as a surface treatment method which is used for various purposes in the industry. In this case, phosphate coated wire is used in the processes to achieve a desirable outcome. The reason to why phosphate coated wire is used in the production process is because phosphate acts as an accumulator, where it stabilizes the lubricant on the surface of the wire. Lubrication is important because it plays a major role in the roll quality and characterizes important benefits regarding the outcome.Currently, SKF has to wash away all phosphates residues after extrusion process in an operation called tumbling. The main reason for this is simply because the surface has to be completely free from lubricants and coatings till the next step of process.

BAE Systems Hägglunds has a long history of producing high performance terrain tracked vehicles (mostly for military applications), and they are now aiming at developing a tracked forwarder with similar techniques.The forwarder will be of series hybrid type where a diesel engine via a generator will power the motors (one for each drive wheel). Thanks to individually controlled motors and the gentle rubber tracks, this forwarder is calculated to have a considerably higher average speed in the terrain and to be more gentle to the soil. The forwarder with a weight of 11 metric tons and a load capacity of 15 metric tons is specified to have an average working speed of 7-10 km/h, a top speed in terrain of 15 km/h and a top speed on roads of 40 km/h.This master?s thesis aims at developing a conceptual design of the forwarder?s drive module which includes electric motor, gear unit, brake and drive wheel.To investigate if the requirements can be fulfilled a study of the dimensioning loading scenarios has been carried out. The resulting needs regarding the torque has been considered in order to determine the required gear ratios for different motor options.

Phosphate is a used as a surface treatment method which is used for various purposes in the industry. In this case, phosphate coated wire is used in the processes to achieve a desirable outcome. The reason to why phosphate coated wire is used in the production process is because phosphate acts as an accumulator, where it stabilizes the lubricant on the surface of the wire. Lubrication is important because it plays a major role in the roll quality and characterizes important benefits regarding the outcome.Currently, SKF has to wash away all phosphates residues after extrusion process in an operation called tumbling. The main reason for this is simply because the surface has to be completely free from lubricants and coatings till the next step of process.

SammanfattningSyfte och frågeställningarSyftet är att undersöka två skolors friskvårdsarbete, samt om det är möjligt att jämföra personalens upplevda hälsa med ledningens syn på personalens hälsa.För att ta reda på detta syfte har vi formulerat följande frågeställningar:På vilket sätt jobbar skolorna med friskvård?Vad har skolorna för mål med friskvårdsarbetet?Hur ser ledningen på personalens upplevda hälsa?Hur ofta deltar personalen i friskvårdsarbetet?Hur upplever personalen sin hälsa?Hur upplever personalen skolans friskvårdsarbete?MetodVi har valt att använda oss av både en kvalitativ och en kvantitativ undersökning i vårt examensarbete. Anledningen till att vi valt att använda oss av både intervjuer och enkäter är att vi dels vill få en djupare förståelse för ledningens syn på friskvården, samt en bredare syn på personalens upplevda hälsa och deras inställning till skolans friskvård. Vi intervjuade två biträdande rektorer och delade totalt ut 143 enkäter på de båda skolorna och vi fick en svarsfrekvens på 48.9 procent dvs. 70 stycken enkäter.ResultatDet resultatet visade var att skolorna erbjuder friskvårdsaktiviteter och en friskvårdstimme varje vecka men det är endast ett fåtal som utnyttjar respektive deltar i dessa möjligheter.Personalens upplevda hälsa var generellt god, förutom att det var höga siffror som visade att många hade långvarig värk i såväl axlar som nacke/rygg.

The predominant forestry harvesting method is based on the harvester-forwarder method, theharvester folds, branches and cuts trees, and sorts the logs into piles, while a forwarder transportsthe logs to a landing area.This master thesis work is about realization of a dynamic forwarder simulation model, and itspurpose is to provide an integrated forwarder simulation model in MATLAB/SimMechanicswhere the forwarder is based on a concept using pendulum arms to connect wheels and chassis.Active suspension control is developed and implemented into the simulation model, and finallycompared in simulation with passive suspension.In a first step, an integrated forwarder simulation model is developed, containing a simplifiedforwarder model, a tire-to-ground interaction model and a test track model. The simplifiedforwarder model is based a rigid multi-body system with a spring-damper suspension of thependulum arms. The tire-to-ground interaction model calculates the reaction forces, friction fromthe ground and applies the propulsion force. The test track model is a simplified version of thereal test track in Skogforsk. The propulsion wheel torque control is used to regulate theforwarder speed.

Carbon dioxide in the atmosphere contributes to the greenhouse effect, which is essential tolife on our planet. Furthermore, it plays an important part of the photosynthesis andrespiration of the world?s organisms. Since the start of the industrial revolution the amount ofcarbon dioxide in the atmosphere has increased exponentially. The main source is theextensive burning of fossil fuels.

This thesis is performed in cooperation with Prodelox AB and JTI (Swedish Institute of Agricultural and Environmental Engineering). The purpose of the project is to generate and develop a WC-technique with a closet sewer that keeps a higher TS-substance than 1.5 %. The WC-technique is mainly directed towards permanent households in sparsely-populated areas and cabins. The goal is to generate concepts of toilets with an extremely low use of water in terms of flushing. The design should be appealing and touch more senses than only the visual.

This report is a result of a project that been conducted on System Andersson. System Andersson sells and develops MPS-systems for small and medium sized manufacturing companies. System Andersson are today located in the central parts of Jönköping and has about 20 employees. The goal for the project is to develop a new version of Andersson Qwick mps. The project has been divided into a number of smaller projects were the authors been part of the planning module project.

The thesis is an examination of the methods that are appropriate and long-term choice to obtain clamping force and secure screw joints in production. The employer, Scania CV AB, transmission manufactures axle gears to all trucks produced in Södertälje. One of the most common assembly elements is screw joints, where the clamping force is essential to achieve a secure joint. Current methods to secure the joint is due much of the friction effect and is an indirect method to measure the clamping force. The clampforce accuracy becomes more widely with torque angle control.

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.

Humans attitudes towards different animals are very complex were culture, genetic, psychology and evolution are some of the factors that influence. The order of animals that can provoke the most intense and extreme attitudes, both positive and negative, are the carnivores. Wolves are a constant debate in Sweden and even though a big part of the population are neutral towards the wolf, a clear friction of the attitudes can be seen. Some factors that have been seen to influence the attitude are age, education and the size of the hometown. The aim of this study is to investigate whether outdoor activities, time spend in rural areas, and time spent in a weekend cottage, also correlate with attitude towards wolf.