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Rapporten är en jämförelse av tre olika isoleringsmaterial för ytterväggar, mineralull, cellulosaisolering och cellplast. Jämförelsen fokuserar på materialens kostnad och egenskaper för brand, fukt och miljöpåverkan. Rapportens resultat är att mineralull är det isoleringsmaterial som rekommenderas, men cellulosaisolering kan vara ett bra alternativ i vissa avseenden. Cellplast rekommenderas ej till isolering av ytterväggar. This paper is written as a thesis project at Linköping University. The environment is one of the main issues in society today, and the construction industry must contribute as well, in order to achieve sustainability. Insulation is an essential part when building a house, and the production process often demands a high amount of raw material and energy. Therefore it is important to choose the kind of insulation which makes as little impact on the environment as possible. In addition to the environment, there are other important aspects to consider as well. How the materials can withstand moisture in different ways, how they react in case of a fire and what the cost is to purchase and install. The purpose of this paper is to compare the two most common insulation materials today, mineral wool and expanded polystyrene, with cellulose insulation, which is often marketed as a more environmentally friendly alternative, and find out which type of insulation is the best, based on these aspects. The paper is written as a review study of previous papers, literature on the subject and information from manufacturers and trade organizations. The main parts of the paper consist of the third chapter Teori which describes the different insulation materials, and the fourth chapter Empiri which describes the fire and moisture properties, environmental impact and cost of the materials. The result of the paper is that mineral wool is the best insulation material for walls in most cases. Mineral wool is the cheapest, has good fire properties and has the lowest carbon dioxide emissions of the compared board materials. Cellulose insulation can be a good alternative from an environmental standpoint as it is possible to recycle instead of depositing, but in that case you should choose loose fill insulation which is made from circulated newspapers. Expanded polystyrene is not recommended as insulation for walls as it has the highest carbon dioxide emissions and has poor fire properties. Examensarbetet är utfört vid Institutionen för teknik och naturvetenskap (ITN) vid Tekniska fakulteten, Linköpings universitet

In order to reduce costly downtime, adequate condition monitoring of the automatic transmission components in heavy duty construction equipment is necessary. The transmission in such equipment enables to change the gear ratio automatically. Further, the bearings in an automatic transmission provide low friction support to its rotating parts and act as an interface separating stationary from rotating components. Wear or other bearing faults may lead to an increase in energy consumption as well as failure of other related components in the automatic transmission, and thus costly downtime. In this study, different sensor data (particularly vibration) was collected on the automatic transmission during controlled test cycles in an automatic transmission test rig to enable adequate condition monitoring. An analysis of the measured vibration data was carried out using signal processing methods. The results indicate that predictive maintenance information related to the automatic transmission bearings may be extracted from vibrations measured on an automatic transmission. This information may be used for early fault detection, thus improving uptime and availability of heavy duty construction equipment.

Improving uptime is paramount in the heavy duty construction equipment business. Failure ofcritical components in the heavy duty machine may lead to unnecessary stops and expensive downtime. The torque converter, a complex omponent of the driveline, transmits and multiplies torque from the engine to the gearbox, and its failure may not only lead to the machine standing still but may also lead to damage of other parts of the automatic transmission. For adequate condition monitoring of the torque converter, different sensor data are measured on a construction equipment machine during controlled driving sessions. Vibration has been measured on the torque converter. An initial investigation of the vibration measured on the torque converter has been carried out to identify its vibration properties in order to enable its health monitoring to prevent failure. Initial signal analysis of the data have been carried out using Order Power Spectrum and Order Modulation Spectrum methods. The results indicate that the torque converter vibration properties contain information relevant for early fault detection. Fastelaboratoriet - VINNEXC