Sökning: "curing times"

Visar resultat 11 - 15 av 18 uppsatser innehållade orden curing times.

  1. 11. Temperatursprickor i betong : Metodutveckling för sprickbegränsning och uppföljning av uppsprickning i en tunnelkonstruktion

    Master-uppsats, KTH/Byggvetenskap

    Författare :Vilmer Andersson-Vass; [2015]
    Nyckelord :Temperatursprickor; värmematta; Contest; sprickrisk; temperaturmätning; numeriska simuleringar;

    Sammanfattning : För att reducera risken för temperatursprickor vid motgjutningar kan motgjutna betongkonstruktioner värmas upp för att minska de temperaturdifferenser som orsakar temperatursprickorna. Inom anläggningsbyggandet är ingjutna värmekablar den vanliga metoden för att åstadkomma detta. LÄS MER

  3. 12. Thin metal patch to FRP propeller: Experimental testing of bonding systems

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :Mårten Kreiss Amberg; [2015]
    Nyckelord :;

    Sammanfattning : To enable the use of carbon fibre reinforced polymer (CFRP) propellers for merchant vessels, the problem of cavitation must be solved. The matrix of the FRP is generally brittle and more sensitive to cavitation erosion than the more conventional metal propeller blades. Nakashima Propeller Co. LÄS MER

  4. 13. Innovation in composite additive manufacturing

    Master-uppsats, Lunds universitet/Innovation

    Författare :Euan Muir; [2015]
    Nyckelord :Composites Additive Manufacturing 3D-printing; Technology and Engineering;

    Sammanfattning : This master thesis contains an overview of existing additive manufacturing methods and considers possible new methods. The purpose being to develop a method for additive manufacturing that can create 3D objects with composite material and/or out of metal. Further this method should work on a low cost additive manufacturing machine. LÄS MER

  5. 14. Eco Friendly Composites Prepared from Lactic Acid Based Resin and Natural Fiber

    Master-uppsats, Högskolan i Borås/Institutionen Ingenjörshögskolan

    Författare :Nima Esmaeili; Shahrzad Javanshir; [2014]
    Nyckelord :Biobased thermoset; thermoset poly lactic acid; biobased composite; natural fiber; viscose;

    Sammanfattning : Lactic acid based thermoset were synthesised by reacting lactic acid with glycerol andfunctionalizing lactic acid branches by methacrylic anhydride. Resins with different chainlength were prepared and their thermo mechanical properties were examined through DMAanalysis and their molecular structures were analyzed by NMR method and their viscositywere investigated through rheometry analysis and three monomers were selected as the bestchain length. LÄS MER

  7. 15. Characterization of viscoelastic properties of an epoxy composite and simulation of time dependent deformation of an annulus seal under load.

    Magister-uppsats, KTH/Hållfasthetslära (Inst.)

    Författare :Christopher Muturi; [2014]
    Nyckelord :;

    Sammanfattning : A new sealing stand-alone tool, i.e. CannSeal to produce a barrier packer or zonal isolation in oil/gas wells has been developed by a Norwegian company (AGR CannSeal AS). The tool allows injection of a fluid into the annulus between the production casing and the surroundings in an oil/gas well. LÄS MER