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Showing result 1 - 5 of 31 essays matching the above criteria.

  1. 1. Extreme renovation of concrete buildings

    University essay from KTH/Betongbyggnad

    Author : Simon Hardo; Daniel Maher; [2023]
    Keywords : ;

    Abstract : The global climate crisis and the need to reduce carbon emissions have brought attention to the construction and real estate sector, which has a significant environmental footprint. However, many real estate developers opt for demolition and new construction instead of renovating existing buildings due to challenges such as low floor heights and stringent sustainability requirements. READ MORE

  3. 2. Resistance Element Welding of Ultra High Strength Steel to Aluminium

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Malte Eriksson; [2023]
    Keywords : ;

    Abstract : The automotive industry strives towards decreased vehicle weight in order to decrease green house gas emissions. To create lighter vehicles, new lighter materials need to be implemented. One issue with new materials is that the traditional joining methods in many cases meet their limitations. READ MORE

  4. 3. Urea-Based Treatments of Unretted Hemp Fibres from Residual Streams

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Danilo Esteban Ortiz Sarasty; [2023]
    Keywords : Finola waste; stalks; unretted hemp fibres; degumming; cold urea alkali; microwave-urea;

    Abstract : More sustainable and efficient degumming methods are required to extract finner bast fibres, especially from agro-industrial waste streams such as stalks from hemp for food purposes. For this reason, in this study, two urea-based treatments were evaluated as degumming alternatives for unretted hemp fibres from residual streams, one at cold and alkaline conditions (CUA) and the other in combination with microwave radiation (MWU). READ MORE

  5. 4. Numerical Modelling of Combined Forming and Punching of Sheet Metal for Heat Exchanger Applications

    University essay from Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaper

    Author : Erik Stålbrand; [2023]
    Keywords : Solid Mechanics; Material Modelling; Damage Modelling; Sheet Metal Damage; Punching Simulation; Forming Simulation; Heat Exchanger; Technology and Engineering;

    Abstract : In this work a strategy for numerical simulation of punching during concurrent pressing of stainless steel sheet metal has been investigated accounting for the stress triaxiality and Lode angle parameter. Modelling of the damage evolution of a sheet metal is a useful tool within the field of engineering and materials science, and can provide useful information regarding material capabilities in a design process. READ MORE

  6. 5. Investigation of Manufacturing Method for Odd-holed Plates for Gasketed Plate Heat Exchangers

    University essay from Lunds universitet/Industriell Produktion

    Author : Hanna Eklind; Johanna Schedin; [2023]
    Keywords : manufacturing methods; punching with eccentric presses; abrasive water jet cutting; laser cutting; Technology and Engineering;

    Abstract : Den här rapporten undersöker samt jämför det möjliga användandet av olika tillverkningsmetoder i produktionen av varianthålade plattor vid Alfa Lavals produktion i Lund. De tre metoderna är stansning med excenterpressar, abrasiv vattenskärning och laserskärning, där de två förstnämnda används i Alfa Lavals produktion i dagsläget. READ MORE